Product Description
The rings and balls of all-ceramic deep groove ball bearings are made of silicon nitride (Si3N4) ceramic material. This bearing can be designed as a full ball or with PTFE, PEEK or stainless steel 304/316 cage. PTFE is the default standard cage.
Full ceramic deep groove ball bearings have the characteristics of non-magnetic and electrical insulation, wear-resistant and corrosion-resistant, oil-free and self-lubricating, high temperature and cold resistance, and can be used in extremely harsh environments and special working conditions. It can be used in high temperature environment above 400ºC under the condition of full ball or equipped with stainless steel 316 cage. The PEEK cage can also be used at temperatures above 250°C. For CZPT temperatures (for example, lower than -70°C), full ceramic bearings with PTFE cages or stainless steel 316 cages can be used. Normally, the normal radial clearance is C0. When it is necessary to adapt to the extreme environment, other clearances can be customized.
| model | size(mm) | Installation size (mm) | weight | weight | ||||||
| da | Da | ra | (kg) | (kg) | ||||||
| d | D | B | r(min) | r1(min) | min | max | max | ZrO2 | Si3N4 | |
| 7900 | 10 | 22 | 6 | 0.3 | 0.15 | 12.5 | 19.5 | 0.3 | 0.007 | 0.0038 |
| 7000 | 26 | 8 | 0.3 | 0.15 | 12.5 | 23.5 | 0.3 | 0.014 | 0.0075 | |
| 7200 | 30 | 9 | 0.6 | 0.3 | 15 | 25 | 0.6 | 0.571 | 0.013 | |
| 7300 | 35 | 11 | 0.6 | 0.3 | 15 | 30 | 0.6 | 0.04 | 0.571 | |
| 7901 | 12 | 24 | 6 | 0.3 | 0.15 | 14.5 | 21.5 | 0.3 | 0.008 | 0.0042 |
| 7001 | 28 | 8 | 0.3 | 0.15 | 14.5 | 25.5 | 0.3 | 0.017 | 0.0092 | |
| 7201 | 32 | 10 | 0.6 | 0.3 | 17 | 27 | 0.6 | 0.571 | 0.015 | |
| 7301 | 37 | 12 | 1 | 0.6 | 18 | 31 | 1 | 0.046 | 0.571 | |
| 7902 | 15 | 28 | 7 | 0.3 | 0.15 | 17.5 | 25.5 | 0.3 | 0.012 | 0.0063 |
| 7002 | 32 | 9 | 0.3 | 0.15 | 17.5 | 29.5 | 0.3 | 0.571 | 0.013 | |
| 7202 | 35 | 11 | 0.6 | 0.3 | 20 | 30 | 0.3 | 0.035 | 0.019 | |
| 7302 | 42 | 13 | 1 | 0.6 | 21 | 36 | 1 | 0.064 | 0.035 | |
| 7903 | 17 | 30 | 7 | 0.3 | 0.15 | 19.5 | 27.5 | 0.3 | 0.013 | 0.0071 |
| 7003 | 35 | 10 | 0.3 | 0.15 | 19.5 | 32.5 | 0.3 | 0.032 | 0.017 | |
| 7203 | 40 | 12 | 0.6 | 0.3 | 22 | 35 | 0.6 | 0.052 | 0.571 | |
| 7303 | 47 | 14 | 1 | 0.6 | 23 | 41 | 1 | 0.087 | 0.047 | |
| 7904 | 20 | 37 | 9 | 0.3 | 0.15 | 22.5 | 34.5 | 0.3 | 0.571 | 0.015 |
| 7004 | 42 | 12 | 0.6 | 0.3 | 25 | 37 | 0.6 | 0.052 | 0.571 | |
| 7204 | 47 | 14 | 1 | 0.6 | 26 | 41 | 1 | 0.082 | 0.045 | |
| 7304 | 52 | 15 | 1.1 | 0.6 | 27 | 45 | 1 | 0.11 | 0.06 | |
| 7905 | 25 | 42 | 9 | 0.3 | 0.15 | 27.5 | 39.5 | 0.3 | 0.032 | 0.018 |
| 7005 | 47 | 12 | 0.6 | 0.3 | 30 | 42 | 0.6 | 0.061 | 0.033 | |
| 7205 | 52 | 15 | 1 | 0.6 | 31 | 46 | 1 | 0.099 | 0.054 | |
| 7305 | 62 | 17 | 1.1 | 0.6 | 32 | 55 | 1 | 0.18 | 0.098 | |
| 7906 | 30 | 47 | 9 | 0.3 | 0.15 | 32.5 | 44.5 | 1 | 0.04 | 0.571 |
| 7006 | 55 | 13 | 1 | 0.6 | 36 | 49 | 1 | 0.089 | 0.048 | |
| 7206 | 62 | 16 | 1 | 0.6 | 36 | 56 | 1 | 0.15 | 0.083 | |
| 7306 | 72 | 19 | 1.1 | 0.6 | 37 | 65 | 1 | 0.27 | 0.14 | |
| 7907 | 35 | 55 | 10 | 0.6 | 0.3 | 40 | 50 | 0.6 | 0.058 | 0.031 |
| 7007 | 62 | 14 | 1 | 0.6 | 41 | 56 | 1 | 0.12 | 0.063 | |
| 7207 | 72 | 17 | 1.1 | 0.6 | 42 | 65 | 1 | 0.22 | 0.12 | |
| 7307 | 80 | 21 | 1.5 | 1 | 44 | 71 | 1.5 | 0.36 | 0.19 | |
| 7908 | 40 | 62 | 12 | 0.6 | 0.3 | 45 | 57 | 0.6 | 0.09 | 0.05 |
| 7008 | 68 | 15 | 1 | 0.6 | 46 | 62 | 1 | 0.15 | 0.08 | |
| 7208 | 80 | 18 | 1.1 | 0.6 | 47 | 73 | 1 | 0.28 | 0.15 | |
| 7308 | 90 | 23 | 1.5 | 1 | 49 | 81 | 1.5 | 0.49 | 0.27 | |
| 7909 | 45 | 68 | 12 | 0.6 | 0.3 | 50 | 63 | 0.6 | 0.097 | 0.053 |
| 7009 | 75 | 16 | 1 | 0.6 | 51 | 69 | 1 | 0.19 | 0.1 | |
| 7209 | 85 | 19 | 1.1 | 0.6 | 52 | 78 | 1 | 0.32 | 0.175 | |
| 7309 | 100 | 25 | 1.5 | 1 | 54 | 91 | 1.5 | 0.64 | 0.345 | |
| 7910 | 50 | 72 | 12 | 0.6 | 0.3 | 55 | 67 | 0.6 | 0.1 | 0.06 |
| 7571 | 80 | 16 | 1 | 0.6 | 56 | 74 | 1 | 0.2 | 0.11 | |
| 7210 | 90 | 20 | 1.1 | 0.6 | 57 | 83 | 1 | 0.35 | 0.19 | |
| 7310 | 110 | 27 | 2 | 1 | 60 | 100 | 2 | 0.82 | 0.44 | |
| 7911 | 55 | 80 | 13 | 1 | 0.6 | 61 | 74 | 1 | 0.15 | 0.08 |
| 7011 | 90 | 18 | 1.1 | 0.6 | 62 | 83 | 1 | 0.29 | 0.16 | |
| 7211 | 100 | 21 | 1.5 | 1 | 64 | 91 | 1.5 | 0.48 | 0.26 | |
| 7311 | 120 | 29 | 2 | 1 | 65 | 110 | 2 | 1.05 | 0.57 | |
| 7912 | 60 | 85 | 13 | 1 | 0.6 | 66 | 79 | 1 | 0.15 | 0.08 |
| 7012 | 95 | 18 | 1.1 | 0.6 | 67 | 88 | 1 | 0.32 | 0.17 | |
| 7212 | 110 | 22 | 1.5 | 1 | 69 | 101 | 1.5 | 0.6 | 0.33 | |
| 7312 | 130 | 31 | 2.1 | 1.1 | 72 | 118 | 2 | 1.32 | 0.72 | |
| 7913 | 65 | 90 | 13 | 1 | 0.6 | 71 | 84 | 1 | 0.17 | 0.09 |
| 7013 | 100 | 18 | 1.1 | 0.6 | 72 | 93 | 1 | 0.34 | 0.18 | |
| 7213 | 120 | 23 | 1.5 | 1 | 74 | 111 | 1.5 | 0.77 | 0.42 | |
| 7313 | 140 | 33 | 2.1 | 1.1 | 77 | 128 | 2 | 1.62 | 0.88 | |
| 7914 | 70 | 100 | 16 | 1 | 0.6 | 76 | 94 | 1 | 0.27 | 0.15 |
| 7014 | 110 | 20 | 1.1 | 0.6 | 77 | 103 | 1 | 0.47 | 0.25 | |
| 7214 | 125 | 24 | 1.5 | 1 | 79 | 116 | 1.5 | 0.84 | 0.45 | |
| 7314 | 150 | 35 | 2.1 | 1.1 | 82 | 138 | 2 | 1.98 | 1.07 | |
| 7915 | 75 | 105 | 16 | 1 | 0.6 | 81 | 99 | 1 | 0.28 | 0.15 |
| 7015 | 115 | 20 | 1.1 | 0.6 | 82 | 108 | 1 | 0.5 | 0.27 | |
| 7215 | 130 | 25 | 1.5 | 1 | 84 | 121 | 1.5 | 0.92 | 0.5 | |
| 7916 | 80 | 110 | 16 | 1 | 0.6 | 86 | 104 | 1 | 0.3 | 0.16 |
| 7016 | 125 | 22 | 1.1 | 0.6 | 87 | 118 | 1 | 0.67 | 0.36 | |
| 7216 | 140 | 26 | 2 | 1 | 90 | 130 | 2 | 1.09 | 0.59 | |
| 7017 | 85 | 130 | 22 | 1.1 | 0.6 | 92 | 123 | 1 | 0.71 | 0.38 |
| 7217 | 150 | 28 | 2 | 1 | 95 | 140 | 2 | 1.35 | 0.73 | |
| 7918 | 90 | 125 | 18 | 1.1 | 0.6 | 97 | 118 | 1 | 0.45 | 0.24 |
| 7018 | 140 | 24 | 1.5 | 1 | 99 | 131 | 1.5 | 0.92 | 0.5 | |
| 7919 | 95 | 130 | 18 | 1.1 | 0.6 | 102 | 123 | 1 | 0.46 | 0.25 |
| 7019 | 145 | 24 | 1.5 | 1 | 104 | 136 | 1.5 | 0.95 | 0.51 | |
| 7920 | 100 | 140 | 20 | 1.1 | 0.6 | 107 | 133 | 1 | 0.64 | 0.35 |
| 7571 | 150 | 24 | 1.5 | 1 | 109 | 141 | 1.5 | 0.99 | 0.54 | |
| 7921 | 105 | 145 | 20 | 1.1 | 0.6 | 112 | 138 | 1 | 0.66 | 0.36 |
| 7922 | 110 | 150 | 20 | 1.1 | 0.6 | 117 | 143 | 1 | 0.69 | 0.37 |
About us
ZheJiang REET BEARING.CO.,LTD is a professional bearing manufacturer and exporter.
We have a wealth of technical.All producing processes are finished in our manufactory. As an ISO9001:2000 certified manufacturer,we will solve various problems in application and use of our bearings.
Our company is an authorized distributor of FAG, INA, CZPT and other world brand bearings.Our company has the right to self-export bearings and launches its own brand RTB.
Our bearing had been exported to more than 20 countries worldwide and are warmly welcomed.
We are looking forward to your order.
FAQ
1.Is the company a production factory or a trading company?
ZheJiang REET BEARING CO.,LTD is a manufacturing enterprise focusing on bearings and integrating research, production and sales.
2.How many the MOQ of your company?
Depending on the size of the bearing, the MOQ is variable, if you are interested, you can contact me for a quote.
3.Does the company accept OEM or customized bearings?
In addition to standard products, we also supply non-standard and modified standard products for special application. Meanwhile, we provide OEM service.
4.Can the company provide free samples?
We can provide samples for free. You only need to provide shipping.
5.What are the company’s delivery terms?
We can accept EXW,FOB,CFR,CIF,etc. You can choose the 1 which is the most convenient cost effective for you.
/* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1
| Zro2 Weight: | 0.35 |
|---|---|
| Si3n4 Weight: | 0.19 |
| Model: | 7210 |
| R1(Min): | 0.6 |
| Contact Angle: | 15° |
| Aligning: | Aligning Bearing |
| Samples: |
US$ 2/Piece
1 Piece(Min.Order) | |
|---|
| Customization: |
Available
| Customized Request |
|---|
How does Preload Affect the Performance and Efficiency of Ball Bearings?
Preload is a crucial factor in ball bearing design that significantly impacts the performance, efficiency, and overall behavior of the bearings in various applications. Preload refers to the intentional axial force applied to the bearing’s rolling elements before it is mounted. This force eliminates internal clearance and creates contact between the rolling elements and the raceways. Here’s how preload affects ball bearing performance:
- Reduction of Internal Clearance:
Applying preload reduces the internal clearance between the rolling elements and the raceways. This eliminates play within the bearing, ensuring that the rolling elements are in constant contact with the raceways. This reduced internal clearance enhances precision and reduces vibrations during operation.
- Increased Stiffness:
Preloaded bearings are stiffer due to the elimination of internal clearance. This increased stiffness improves the bearing’s ability to handle axial and radial loads with higher accuracy and minimal deflection.
- Minimized Axial Play:
Preload minimizes or eliminates axial play within the bearing. This is especially important in applications where axial movement needs to be minimized, such as machine tool spindles and precision instruments.
- Enhanced Rigidity:
The stiffness resulting from preload enhances the bearing’s rigidity, making it less susceptible to deformation under load. This is critical for maintaining precision and accuracy in applications that require minimal deflection.
- Reduction in Ball Slippage:
Preload reduces the likelihood of ball slippage within the bearing, ensuring consistent contact between the rolling elements and the raceways. This leads to improved efficiency and better load distribution.
- Improved Running Accuracy:
Preloading enhances the running accuracy of the bearing, ensuring that it maintains precise rotational characteristics even under varying loads and speeds. This is essential for applications requiring high accuracy and repeatability.
- Optimized Performance at High Speeds:
Preload helps prevent skidding and slipping of the rolling elements during high-speed operation. This ensures that the bearing remains stable, reducing the risk of noise, vibration, and premature wear.
- Impact on Friction and Heat Generation:
While preload reduces internal clearance and friction, excessive preload can lead to higher friction and increased heat generation. A balance must be struck between optimal preload and minimizing friction-related issues.
- Application-Specific Considerations:
The appropriate amount of preload depends on the application’s requirements, such as load, speed, accuracy, and operating conditions. Over-preloading can lead to increased stress and premature bearing failure, while under-preloading may result in inadequate rigidity and reduced performance.
Overall, preload plays a critical role in optimizing the performance, accuracy, and efficiency of ball bearings. Engineers must carefully determine the right preload level for their specific applications to achieve the desired performance characteristics and avoid potential issues related to overloading or inadequate rigidity.
What Precautions should be taken to Prevent Contamination of Ball Bearings in Industrial Settings?
Preventing contamination of ball bearings is essential to ensure their proper function, longevity, and overall performance in industrial settings. Contaminants such as dust, dirt, debris, and particles can significantly impact bearing operation. Here are important precautions to take to prevent contamination of ball bearings:
- Effective Sealing:
Choose ball bearings with appropriate seals or shields to prevent the ingress of contaminants. Seals provide a physical barrier against dust, moisture, and particles, ensuring the bearing’s interior remains clean.
- Clean Environment:
Maintain a clean working environment around the machinery and equipment. Regularly clean the surrounding areas to prevent the accumulation of dirt and debris that could enter the bearings.
- Proper Handling:
Handle bearings with clean hands and use gloves if necessary. Avoid touching the bearing surfaces with bare hands, as natural skin oils can transfer contaminants onto the bearing.
- Clean Tools and Equipment:
Use clean tools and equipment during installation and maintenance to prevent introducing contaminants. Ensure that tools are properly cleaned before coming into contact with the bearing components.
- Contamination-Controlled Workstations:
Establish contamination-controlled workstations for bearing handling, installation, and maintenance. These areas should have proper ventilation, filtered air, and minimal exposure to external contaminants.
- Proper Lubrication:
Use the correct lubricant in appropriate quantities. Lubricants help create a barrier against contaminants and reduce friction. Regularly inspect and replenish lubrication to maintain its effectiveness.
- Regular Inspections:
Implement a routine inspection schedule to monitor the condition of the bearings. Look for signs of contamination, wear, and damage. Address any issues promptly to prevent further damage.
- Training and Education:
Train personnel on proper handling, installation, and maintenance practices to minimize the risk of contamination. Educated employees are more likely to take precautions and prevent accidental contamination.
- Environmental Controls:
In sensitive environments, such as clean rooms or medical facilities, implement strict environmental controls to minimize the presence of contaminants that could affect bearing performance.
- Regular Cleaning and Maintenance:
Perform regular cleaning and maintenance of machinery and equipment to prevent the buildup of contaminants. Keep bearings protected during maintenance to prevent debris from entering during the process.
- Selection of Suitable Bearings:
Choose bearings that are specifically designed for the application’s environmental conditions. Some bearings have advanced sealing options or specialized coatings that enhance contamination resistance.
By implementing these precautions, industries can significantly reduce the risk of contamination in ball bearings, ensuring smooth operation, extended bearing life, and enhanced equipment reliability.
How do Ball Bearings Differ from Other Types of Bearings like Roller Bearings?
Ball bearings and roller bearings are two common types of rolling-element bearings, each with distinct designs and characteristics. Here’s a comparison of ball bearings and roller bearings:
- Design:
Ball Bearings: Ball bearings use spherical balls to separate and reduce friction between the bearing’s inner and outer rings. The balls enable rolling motion and smooth contact, minimizing friction.
Roller Bearings: Roller bearings, as the name suggests, use cylindrical or tapered rollers instead of balls. These rollers have larger contact areas, distributing loads over a broader surface.
- Friction and Efficiency:
Ball Bearings: Due to the point contact between the balls and the rings, ball bearings have lower friction and are more efficient at high speeds.
Roller Bearings: Roller bearings have a larger contact area, resulting in slightly higher friction compared to ball bearings. They are more suitable for heavy-load applications where efficiency is prioritized over high speeds.
- Load Capacity:
Ball Bearings: Ball bearings excel at handling light to moderate loads in both radial and axial directions. They are commonly used in applications where smooth rotation and low friction are important.
Roller Bearings: Roller bearings have a higher load-carrying capacity than ball bearings. They can support heavier radial and axial loads and are preferred for applications with significant loads or impact forces.
- Variability:
Ball Bearings: Ball bearings come in various designs, including deep groove, angular contact, and thrust ball bearings, each suitable for different applications.
Roller Bearings: Roller bearings have diverse types, including cylindrical, spherical, tapered, and needle roller bearings, each optimized for specific load and motion requirements.
- Speed Capability:
Ball Bearings: The reduced friction in ball bearings makes them suitable for high-speed applications, such as electric motors and precision machinery.
Roller Bearings: Roller bearings can handle higher loads but are generally better suited for moderate to low speeds due to slightly higher friction.
- Applications:
Ball Bearings: Ball bearings are used in applications where smooth motion, low friction, and moderate loads are essential, such as electric fans, bicycles, and some automotive components.
Roller Bearings: Roller bearings find applications in heavy machinery, construction equipment, automotive transmissions, and conveyor systems, where heavier loads and durability are crucial.
In summary, ball bearings and roller bearings differ in their design, friction characteristics, load capacities, speed capabilities, and applications. The choice between them depends on the specific requirements of the machinery and the type of loads and forces involved.
editor by CX 2024-05-16
China factory Active-Power Industries Angular Contact Ball Bearing 7007c China Factory 7319bm Double Row Angular Contact Ball Bearing drive shaft bearing
Product Description
ACTIVE-POWER INDUSTRIES Angular Contact Ball Bearing 7007C China Factory 7319BM Double Row Angular Contact Ball Bearing
Product Description
The connection line between the steel ball of the contact ball bearing and the contact point of the inner and outer rings forms an angle with the radial direction. Contact angles are generally divided into 15°, 30°, and 40°, which are represented by letters C, A, and B respectively.
Angular contact ball bearings mainly bear large unidirectional axial loads, and the larger the contact angle, the greater the load-bearing capacity. The material of the cage is steel plate, brass, or engineering plastic, and the forming method is stamping or turning, which is selected according to the bearing form or service conditions. Others include combined angular contact ball bearings, double-row angular contact ball bearings, and four-point contact ball bearings.
Angular contact ball bearings can bear radial load and axial load at the same time. Can work at higher speeds. The larger the contact angle, the higher the axial load-carrying capacity. High-precision and high-speed bearings usually take a contact angle of 15 degrees. Under the action of axial force, the contact angle will increase. Single-row angular contact ball bearings can only bear axial load in 1 direction and will cause additional axial force when bearing radial load. And it can only limit the axial displacement of the shaft or housing in 1 direction. If it is installed in pairs, make the outer rings of a pair of bearings face each other, that is, the wide end faces the wide end face, and the narrow end faces the narrow end face. This avoids causing additional axial forces and limits the shaft or housing to axial play in both directions.
Because the raceway of the inner and outer rings of the angular contact ball bearing can have relative displacement on the horizontal axis, it can bear radial load and axial load at the same time – combined load (single row angular contact ball bearing can only bear axial load in 1 direction, Therefore, they are generally installed in pairs). The material of the cage includes brass, synthetic resin, etc., which are distinguished according to the bearing type and service conditions.
Product Parameters
| Product Name | Angular Contact Ball Bearing |
| Type | Angular Contact Ball Bearing |
| Structure | Angular Contact |
| Applicable Industries | The machinery manufacturing plant, machine tools, mechanical equipment, motor automobile hub, agricultural machinery |
| Brand Name | RPZ /LONK/XWFD/ XWFD ZMW |
| Accuracy class | P0, P6, P5, P4, P2 or as required20mm-500mm |
| Seal type | Open / 2RS |
| Size | 20mm-500mm |
| Number of Rows | Single row |
| Origin | ZheJiang , China |
| Product Model | 7000cac 7200c 7001acm |
| Material | Gcr15 chrome steel / stainless steel bearing |
| Features | long life, low friction, high speed |
| Retainer Type | Brass / bakelite / steel |
| Angular Contact Bearing | ||||
| 7000AC | 7200AC | 7303AC | 7406AC | 3304-2RS/ZZ |
| 7001AC | 7201AC | 7304AC | 7407ACP6 | 3305-2RS/ZZ |
| 7002AC | 7202AC | 7305AC | 7408AC | 3306-2RS/ZZ |
| 7003AC | 7203AC | 7306AC | 7409AC | 3307-2RS/ZZ |
| 7004AC | 7204AC | 7307AC | 7410AC | 3308-2RS/ZZ |
| 7005AC | 7205AC | 7308AC | 7412ACM | 3309-2RS/ZZ |
| 7006AC | 7206AC | 7309AC | 7412BM | 3310-2RS/ZZ |
| 7007AC | 7207AC | 7310AC | 7414ACM | 3311-2RS/ZZ |
| 7008AC | 7208AC | 7311AC | 7414BM | 3312-2RS/ZZ |
| 7009AC | 7209AC | 7312AC | 7416ACM | 3313-2RS/ZZ |
| 7571AC | 7210C | 7313AC | 7416BM | 3314-2RS/ZZ |
| 7011AC | 7210AC | 7314AC | 7418ACM | 3315-2RS/ZZ |
| 7012AC | 7211AC | 7315AC | 7418BM | 3316-2RS/ZZ |
| 7013AC | 7212AC | 7315BM | 3317-2RS/ZZ | |
| 7014AC | 7213AC | 7317AC | 3204-2RS/ZZ | 3318-2RS/ZZ |
| 7015AC | 7214AC | 7317BM | 3205-2RS/ZZ | 3319-2RS/ZZ |
| 7016AC | 7216AC | 7318AC | 3206-2RS/ZZ | 3320-2RS/ZZ |
| 7017AC | 7217AC | 7318BTN | 3207-2RS/ZZ | |
| 7018AC | 7218AC | 7319AC | 3208-2RS/ZZ | QJ210 |
| 7571AC | 7219AC | 7319BM | 3209-2RS/ZZ | QJ211 |
| 7571AC | 7220AC | 7320AC | 3210-2RS/ZZ | QJ212 |
| 7571AC | 7221AC | 7320BM | 3211-2RS/ZZ | QJ213 |
| 7026AC | 7222AC | 7322AC | 3212-2RS/ZZ | QJ214 |
| 7571AC | 7224AC | 7322BM | 3213-2RS/ZZ | QJ215 |
| 7030AC | 7228AC | 7324ACM | 3214-2RS/ZZ | QJ216 |
| 7032AC | 7232AC | 7324BM | 3215-2RS/ZZ | QJ217 |
| 7034AC | 7236AC | 7326ACM | 3216-2RS/ZZ | QJ218 |
| 7036AC | 7240AC | 7328ACM | 3217-2RS/ZZ | QJ219 |
| 7038AC | 7244AC | 7328BM | 3218-2RS/ZZ | QJ220 |
| 7330ACM | 3219-2RS/ZZ | QJ222 | ||
| 7332ACM | 3220-2RS/ZZ | QJ224 | ||
| 7334ACM | QJ226 | |||
| 7336ACM | QJ228 | |||
| 7338ACM | QJ230 | |||
| 7340ACM | QJ232 | |||
Company Profile
HangZhou Active-Power Industrial. is located in HangZhou, ZheJiang , China. The factory has been committed to the production research and development of bearings for more than 20 years. We support OEM and ODM bearing customization.
The main products are: Deep Groove Ball Bearing Taper Roller Bearing Tapered Roller Bearing Auto Wheel Hub Bearing Cylindrical Roller Bearing Spherical Roller Bearing Motor Bearing Needle Roller Bearing Angular Contact Ball Bearing.
FAQ
Q1:What is your Before-sales Service?
1>. Offer to bear related consultation about technology and application;
2>.Help customers with bearing choice, clearance configuration, product” life, and reliability analysis;
3>. Offer highly cost-effective and complete solution program according to site conditions;
4>. Offer localized program on introduced equipment to save running cost
Q2: What is your After-sales Service?
1>. Offer training about bearing installation and maintenance;
2>.Help customers with trouble diagnosis and failure analysis;
3>. Visit customers regularly and feedback on their rational suggestions and requirements to the company.
Q3: How about your company’s strength?
1>.FREE SAMPLES:
contact us by email or trade manager, we will send the free samples according to your request.
2>. World-Class Bearing:
We provide our customers with all types of indigenous roller bearings of world-class quality.
3>.OEM or Non-Stand Bearings:
Any requirement for Non-standard roller bearings is Easily Fulfilled by us due to our vast knowledge and links in the industry.
4>.Genuine products With Excellent Quality:
The company has always proved the 100% quality products it provides with genuine intent.
5>. After-Sales Service and Technical Assistance:
The company provides after-sales service and technical assistance as per the customer’s requirements and needs.
6>.Quick Delivery:
The company provides just-in-time delivery with its streamlined supply chain.
7>.Cost Saving:
We provide long-life, shock-resistant, and high-reliability roller bearings with excellent quality and better performance.
Resulting in increased cost savings.
Q4: What will we do if you are not satisfied with the product?
A: If have any abnormal, Please contact us at the first time, and we will immediately process
Q5: How long will you respond to our problems?
A: We will respond within 1 hour. 24 hours to solve your problem
Q6: Is optional lubrication provided?
A: We can offer a wide range of oils and greases for a variety of applications. Please contact our engineer for technical
assistance with any special requirements
/* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1
| Contact Angle: | 60° |
|---|---|
| Aligning: | Non-Aligning Bearing |
| Separated: | Separated |
| Rows Number: | Multiple |
| Load Direction: | Thrust Bearing |
| Material: | Stainless Steel |
| Samples: |
US$ 0/Piece
1 Piece(Min.Order) | |
|---|
| Customization: |
Available
| Customized Request |
|---|
How does Preload Affect the Performance and Efficiency of Ball Bearings?
Preload is a crucial factor in ball bearing design that significantly impacts the performance, efficiency, and overall behavior of the bearings in various applications. Preload refers to the intentional axial force applied to the bearing’s rolling elements before it is mounted. This force eliminates internal clearance and creates contact between the rolling elements and the raceways. Here’s how preload affects ball bearing performance:
- Reduction of Internal Clearance:
Applying preload reduces the internal clearance between the rolling elements and the raceways. This eliminates play within the bearing, ensuring that the rolling elements are in constant contact with the raceways. This reduced internal clearance enhances precision and reduces vibrations during operation.
- Increased Stiffness:
Preloaded bearings are stiffer due to the elimination of internal clearance. This increased stiffness improves the bearing’s ability to handle axial and radial loads with higher accuracy and minimal deflection.
- Minimized Axial Play:
Preload minimizes or eliminates axial play within the bearing. This is especially important in applications where axial movement needs to be minimized, such as machine tool spindles and precision instruments.
- Enhanced Rigidity:
The stiffness resulting from preload enhances the bearing’s rigidity, making it less susceptible to deformation under load. This is critical for maintaining precision and accuracy in applications that require minimal deflection.
- Reduction in Ball Slippage:
Preload reduces the likelihood of ball slippage within the bearing, ensuring consistent contact between the rolling elements and the raceways. This leads to improved efficiency and better load distribution.
- Improved Running Accuracy:
Preloading enhances the running accuracy of the bearing, ensuring that it maintains precise rotational characteristics even under varying loads and speeds. This is essential for applications requiring high accuracy and repeatability.
- Optimized Performance at High Speeds:
Preload helps prevent skidding and slipping of the rolling elements during high-speed operation. This ensures that the bearing remains stable, reducing the risk of noise, vibration, and premature wear.
- Impact on Friction and Heat Generation:
While preload reduces internal clearance and friction, excessive preload can lead to higher friction and increased heat generation. A balance must be struck between optimal preload and minimizing friction-related issues.
- Application-Specific Considerations:
The appropriate amount of preload depends on the application’s requirements, such as load, speed, accuracy, and operating conditions. Over-preloading can lead to increased stress and premature bearing failure, while under-preloading may result in inadequate rigidity and reduced performance.
Overall, preload plays a critical role in optimizing the performance, accuracy, and efficiency of ball bearings. Engineers must carefully determine the right preload level for their specific applications to achieve the desired performance characteristics and avoid potential issues related to overloading or inadequate rigidity.
How do Miniature Ball Bearings Differ from Standard-sized Ones, and Where are They Commonly Used?
Miniature ball bearings, as the name suggests, are smaller in size compared to standard-sized ball bearings. They have distinct characteristics and are designed to meet the unique requirements of applications that demand compactness, precision, and efficient rotation in confined spaces. Here’s how miniature ball bearings differ from standard-sized ones and where they are commonly used:
- Size:
The most noticeable difference is their size. Miniature ball bearings typically have outer diameters ranging from a few millimeters to around 30 millimeters, while standard-sized ball bearings have larger dimensions suitable for heavier loads and higher speeds.
- Load Capacity:
Due to their smaller size, miniature ball bearings have lower load-carrying capacities compared to standard-sized bearings. They are designed for light to moderate loads and are often used in applications where precision and compactness are prioritized over heavy load support.
- Precision:
Miniature ball bearings are known for their high precision and accuracy. They are manufactured to tighter tolerances, making them suitable for applications requiring precise motion control and low levels of vibration.
- Speed:
Miniature ball bearings can achieve higher speeds than standard-sized bearings due to their smaller size and lower mass. This makes them ideal for applications involving high-speed rotation.
- Friction and Efficiency:
Miniature ball bearings generally have lower friction due to their smaller contact area. This contributes to higher efficiency and reduced heat generation in applications that require smooth and efficient motion.
- Applications:
Miniature ball bearings find applications in various industries and sectors:
- Electronics and Consumer Devices:
They are used in small motors, computer disk drives, printers, and miniature fans, where space is limited but precise motion is essential.
- Medical and Dental Equipment:
Miniature bearings are used in medical devices such as surgical instruments, dental handpieces, and diagnostic equipment due to their precision and compactness.
- Robotics and Automation:
Miniature ball bearings are integral to robotic arms, miniature conveyors, and automation systems, enabling precise movement in confined spaces.
- Aerospace and Defense:
They are used in applications like UAVs (drones), aerospace actuators, and satellite components where size and weight constraints are critical.
- Optics and Instrumentation:
Miniature bearings play a role in optical instruments, cameras, and measuring devices, providing smooth rotation and accurate positioning.
Overall, miniature ball bearings are specialized components designed for applications where space, precision, and efficient rotation are paramount. Their compactness and high precision make them crucial in various industries requiring reliable motion control in limited spaces.
What are the Primary Benefits of Using Ball Bearings in Machinery and Equipment?
Ball bearings offer several primary benefits when used in machinery and equipment. Their design and functionality provide advantages that contribute to the efficient and reliable operation of various applications. Here are the key benefits:
- Reduced Friction:
One of the primary benefits of ball bearings is their ability to minimize friction between moving parts. The rolling motion of the balls reduces the contact area and sliding friction, leading to smoother operation and less energy loss due to frictional heating.
- Efficient Load Support:
Ball bearings are engineered to support both radial and axial loads, making them versatile for applications with multidirectional forces. This load-bearing capability allows machinery to handle different types of loads while maintaining performance and stability.
- Smooth Rotation:
Ball bearings enable smooth and precise rotational movement. The rolling motion of the balls provides consistent motion with minimal resistance, ensuring that machinery operates smoothly and without jerks.
- High-Speed Capability:
Due to their low friction and efficient rolling action, ball bearings are suitable for high-speed applications. They allow machinery and equipment to achieve and maintain high rotational speeds without excessive wear or heat buildup.
- Reduced Wear and Maintenance:
The reduced friction in ball bearings leads to lower wear on components. This results in longer service intervals and reduced maintenance requirements, saving both time and maintenance costs.
- Energy Efficiency:
By minimizing friction and reducing energy losses, ball bearings contribute to the overall energy efficiency of machinery. This is particularly important in applications where energy consumption is a concern.
- Versatility:
Ball bearings come in various types, sizes, and configurations, allowing them to be used in a wide range of machinery and equipment. They can be customized to suit specific application requirements.
- Reliability and Longevity:
Ball bearings are designed to withstand heavy loads and harsh operating conditions. Their durability and resistance to wear ensure reliable performance and an extended operational life.
- Quiet Operation:
Ball bearings contribute to quiet machinery operation due to the smooth rolling motion of the balls. This is particularly important in applications where noise reduction is a consideration.
In summary, the primary benefits of using ball bearings in machinery and equipment include reduced friction, efficient load support, smooth rotation, high-speed capability, reduced wear and maintenance, energy efficiency, versatility, reliability, and quiet operation. These benefits collectively enhance the performance and longevity of machinery across various industries.
editor by CX 2024-05-15
China Hot selling Ball Bearing/ Auto Wheel Hub Bearing/Taper Roller Bearing double row ball bearing
Product Description
Aluminum Die Casting for Metal Radiator Cover/Aluminum cast/gearbox/precision/high-pressure casting/gravity/metal/steel/zinc alloy die-cast
*We bring complete casting solutions to enhance your products and services with the speed and efficiency demanded in today’s marketplace.
*We can produce both aluminum and zinc die castings, and we offer exceptional technical and operational support to help move your business forward.
We deal with a wide range of products which include:
*Auto Parts
*Process Industries
*Auto Meters Castings
*Consumer Electrical Industries
*Textile Industries
*Electronic Industries
Our advantages:
1. High quality materials, professional production, high-precision equipment. Customized design and processing;
2. Strong and durable, strong strength, large torque and good comprehensive mechanical properties;
3. High rotation efficiency, stable and smooth transmission, long service life, noise reduction and shock absorption;
4. Focus on gear processing for 20 years.
5. Carburizing and quenching of tooth surface, strong wear resistance, reliable operation and high bearing capacity;
6. The tooth surface can be ground, and the precision is higher after grinding.
Workshop:
Inspection machine:
/* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1
| After-sales Service: | Yes |
|---|---|
| Warranty: | One Year |
| Condition: | New |
| Certification: | ISO9001 |
| Customized: | Non-Customized |
| Material: | Alloy |
| Customization: |
Available
| Customized Request |
|---|
Can you Provide Examples of Industries where Ball Bearings are Crucial Components?
Ball bearings are essential components in a wide range of industries where smooth motion, load support, and precision are vital. Here are some examples of industries where ball bearings play a crucial role:
- Automotive Industry:
Ball bearings are used in various automotive applications, including wheel hubs, transmissions, engines, steering systems, and suspension components. They provide reliable rotation and support in both passenger vehicles and commercial vehicles.
- Aerospace Industry:
In the aerospace sector, ball bearings are found in aircraft engines, landing gear systems, control surfaces, and avionics equipment. Their ability to handle high speeds and precision is vital for aviation safety.
- Industrial Machinery:
Ball bearings are integral to a wide range of industrial machinery, including pumps, compressors, conveyors, machine tools, printing presses, and textile machinery. They facilitate smooth operation and load distribution in these diverse applications.
- Medical Equipment:
In medical devices and equipment, ball bearings are used in surgical instruments, imaging equipment, dental tools, and laboratory machinery. Their precision and smooth movement are crucial for accurate diagnostics and treatments.
- Robotics and Automation:
Ball bearings are key components in robotic arms, automation systems, and manufacturing machinery. They enable precise movement, high-speed operation, and reliable performance in automated processes.
- Renewable Energy:
Wind turbines and solar tracking systems utilize ball bearings to enable efficient rotation and tracking of the wind blades and solar panels. Ball bearings withstand the dynamic loads and environmental conditions in renewable energy applications.
- Marine and Shipbuilding:
Ball bearings are used in marine applications such as ship propulsion systems, steering mechanisms, and marine pumps. They withstand the corrosive environment and provide reliable performance in maritime operations.
- Heavy Equipment and Construction:
In construction machinery like excavators, bulldozers, and cranes, ball bearings support the movement of heavy loads and enable efficient operation in demanding environments.
- Electronics and Consumer Appliances:
Consumer electronics like electric motors, computer hard drives, and household appliances rely on ball bearings for smooth motion and reliable operation.
- Oil and Gas Industry:
In oil and gas exploration and extraction equipment, ball bearings are used in drilling rigs, pumps, and processing machinery. They handle the high loads and harsh conditions of this industry.
These examples demonstrate how ball bearings are indispensable components in various industries, contributing to the efficiency, reliability, and functionality of diverse mechanical systems and equipment.
How do Miniature Ball Bearings Differ from Standard-sized Ones, and Where are They Commonly Used?
Miniature ball bearings, as the name suggests, are smaller in size compared to standard-sized ball bearings. They have distinct characteristics and are designed to meet the unique requirements of applications that demand compactness, precision, and efficient rotation in confined spaces. Here’s how miniature ball bearings differ from standard-sized ones and where they are commonly used:
- Size:
The most noticeable difference is their size. Miniature ball bearings typically have outer diameters ranging from a few millimeters to around 30 millimeters, while standard-sized ball bearings have larger dimensions suitable for heavier loads and higher speeds.
- Load Capacity:
Due to their smaller size, miniature ball bearings have lower load-carrying capacities compared to standard-sized bearings. They are designed for light to moderate loads and are often used in applications where precision and compactness are prioritized over heavy load support.
- Precision:
Miniature ball bearings are known for their high precision and accuracy. They are manufactured to tighter tolerances, making them suitable for applications requiring precise motion control and low levels of vibration.
- Speed:
Miniature ball bearings can achieve higher speeds than standard-sized bearings due to their smaller size and lower mass. This makes them ideal for applications involving high-speed rotation.
- Friction and Efficiency:
Miniature ball bearings generally have lower friction due to their smaller contact area. This contributes to higher efficiency and reduced heat generation in applications that require smooth and efficient motion.
- Applications:
Miniature ball bearings find applications in various industries and sectors:
- Electronics and Consumer Devices:
They are used in small motors, computer disk drives, printers, and miniature fans, where space is limited but precise motion is essential.
- Medical and Dental Equipment:
Miniature bearings are used in medical devices such as surgical instruments, dental handpieces, and diagnostic equipment due to their precision and compactness.
- Robotics and Automation:
Miniature ball bearings are integral to robotic arms, miniature conveyors, and automation systems, enabling precise movement in confined spaces.
- Aerospace and Defense:
They are used in applications like UAVs (drones), aerospace actuators, and satellite components where size and weight constraints are critical.
- Optics and Instrumentation:
Miniature bearings play a role in optical instruments, cameras, and measuring devices, providing smooth rotation and accurate positioning.
Overall, miniature ball bearings are specialized components designed for applications where space, precision, and efficient rotation are paramount. Their compactness and high precision make them crucial in various industries requiring reliable motion control in limited spaces.
What Factors should be Considered when Selecting a Ball Bearing for a Particular Application?
Selecting the right ball bearing for a specific application involves careful consideration of various factors to ensure optimal performance, longevity, and reliability. Here are the key factors that should be taken into account:
- Load Type and Magnitude:
Determine the type of load (radial, axial, or combined) and the magnitude of the load that the bearing will need to support. Choose a bearing with the appropriate load-carrying capacity to ensure reliable operation.
- Speed and Operating Conditions:
Consider the rotational speed of the application and the operating conditions, such as temperature, humidity, and exposure to contaminants. Different bearing types and materials are suited for varying speeds and environments.
- Accuracy and Precision:
For applications requiring high accuracy and precision, such as machine tool spindles or optical instruments, choose high-precision bearings that can maintain tight tolerances and minimize runout.
- Space Limitations:
If the application has limited space, choose miniature or compact ball bearings that can fit within the available dimensions without compromising performance.
- Thrust and Radial Loads:
Determine whether the application requires predominantly thrust or radial load support. Choose the appropriate type of ball bearing (thrust, radial, or angular contact) based on the primary load direction.
- Alignment and Misalignment:
If the application experiences misalignment between the shaft and housing, consider self-aligning ball bearings that can accommodate angular misalignment.
- Mounting and Installation:
Consider the ease of mounting and dismounting the bearing. Some applications may benefit from features like flanges or snap rings for secure installation.
- Lubrication and Maintenance:
Choose a bearing with appropriate lubrication options based on the application’s speed and temperature range. Consider whether seals or shields are necessary to protect the bearing from contaminants.
- Environmental Conditions:
Factor in the operating environment, including exposure to corrosive substances, chemicals, water, or dust. Choose materials and coatings that can withstand the specific environmental challenges.
- Bearing Material:
Select a bearing material that suits the application’s requirements. Common materials include stainless steel for corrosion resistance and high-carbon chrome steel for general applications.
- Bearing Arrangement:
Consider whether a single-row, double-row, or multiple bearings in a specific arrangement are needed to accommodate the loads and moments present in the application.
By carefully evaluating these factors, engineers and designers can choose the most suitable ball bearing that aligns with the specific demands of the application, ensuring optimal performance, durability, and overall operational efficiency.
editor by CX 2024-05-15
China Good quality Double Row Angular Contact Ball Bearing 3302 3303 3304 3305 3306 3307 3308 3309 3310 ball bearing
Product Description
Double row angular contact ball bearing 3310
Angular contact ball bearings are CZPT to support radial load and axial load. As single row angular contact ball bearings can only support axial load in single direction, matched bearing mounting is often adopted to them as matched parts of bearings, preload for them is more convenient.
Retainers are made of brass, synthetic resins or others subject to individual bearing features and application conditions.
| Theme | angular contact ball bearing 3214 2rs |
| Own Brand | BXY ,SKYN, OEM |
| Rings Material | Chrome steel-GCr15, high Carbon steel-GCR11 |
| Cages Material | steel,brass |
| ID size | 10*125*39.7mm |
| Quality standard | ISO9 |
/* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1
| Rolling Body: | Ball Bearings |
|---|---|
| The Number of Rows: | Double |
| Outer Dimension: | Small and Medium-Sized (60-115mm) |
| Material: | Bearing Steel |
| Spherical: | Aligning Bearings |
| Load Direction: | Axial Bearing |
| Customization: |
Available
| Customized Request |
|---|
Can you Provide Examples of Industries where Ball Bearings are Crucial Components?
Ball bearings are essential components in a wide range of industries where smooth motion, load support, and precision are vital. Here are some examples of industries where ball bearings play a crucial role:
- Automotive Industry:
Ball bearings are used in various automotive applications, including wheel hubs, transmissions, engines, steering systems, and suspension components. They provide reliable rotation and support in both passenger vehicles and commercial vehicles.
- Aerospace Industry:
In the aerospace sector, ball bearings are found in aircraft engines, landing gear systems, control surfaces, and avionics equipment. Their ability to handle high speeds and precision is vital for aviation safety.
- Industrial Machinery:
Ball bearings are integral to a wide range of industrial machinery, including pumps, compressors, conveyors, machine tools, printing presses, and textile machinery. They facilitate smooth operation and load distribution in these diverse applications.
- Medical Equipment:
In medical devices and equipment, ball bearings are used in surgical instruments, imaging equipment, dental tools, and laboratory machinery. Their precision and smooth movement are crucial for accurate diagnostics and treatments.
- Robotics and Automation:
Ball bearings are key components in robotic arms, automation systems, and manufacturing machinery. They enable precise movement, high-speed operation, and reliable performance in automated processes.
- Renewable Energy:
Wind turbines and solar tracking systems utilize ball bearings to enable efficient rotation and tracking of the wind blades and solar panels. Ball bearings withstand the dynamic loads and environmental conditions in renewable energy applications.
- Marine and Shipbuilding:
Ball bearings are used in marine applications such as ship propulsion systems, steering mechanisms, and marine pumps. They withstand the corrosive environment and provide reliable performance in maritime operations.
- Heavy Equipment and Construction:
In construction machinery like excavators, bulldozers, and cranes, ball bearings support the movement of heavy loads and enable efficient operation in demanding environments.
- Electronics and Consumer Appliances:
Consumer electronics like electric motors, computer hard drives, and household appliances rely on ball bearings for smooth motion and reliable operation.
- Oil and Gas Industry:
In oil and gas exploration and extraction equipment, ball bearings are used in drilling rigs, pumps, and processing machinery. They handle the high loads and harsh conditions of this industry.
These examples demonstrate how ball bearings are indispensable components in various industries, contributing to the efficiency, reliability, and functionality of diverse mechanical systems and equipment.
What Precautions should be taken to Prevent Contamination of Ball Bearings in Industrial Settings?
Preventing contamination of ball bearings is essential to ensure their proper function, longevity, and overall performance in industrial settings. Contaminants such as dust, dirt, debris, and particles can significantly impact bearing operation. Here are important precautions to take to prevent contamination of ball bearings:
- Effective Sealing:
Choose ball bearings with appropriate seals or shields to prevent the ingress of contaminants. Seals provide a physical barrier against dust, moisture, and particles, ensuring the bearing’s interior remains clean.
- Clean Environment:
Maintain a clean working environment around the machinery and equipment. Regularly clean the surrounding areas to prevent the accumulation of dirt and debris that could enter the bearings.
- Proper Handling:
Handle bearings with clean hands and use gloves if necessary. Avoid touching the bearing surfaces with bare hands, as natural skin oils can transfer contaminants onto the bearing.
- Clean Tools and Equipment:
Use clean tools and equipment during installation and maintenance to prevent introducing contaminants. Ensure that tools are properly cleaned before coming into contact with the bearing components.
- Contamination-Controlled Workstations:
Establish contamination-controlled workstations for bearing handling, installation, and maintenance. These areas should have proper ventilation, filtered air, and minimal exposure to external contaminants.
- Proper Lubrication:
Use the correct lubricant in appropriate quantities. Lubricants help create a barrier against contaminants and reduce friction. Regularly inspect and replenish lubrication to maintain its effectiveness.
- Regular Inspections:
Implement a routine inspection schedule to monitor the condition of the bearings. Look for signs of contamination, wear, and damage. Address any issues promptly to prevent further damage.
- Training and Education:
Train personnel on proper handling, installation, and maintenance practices to minimize the risk of contamination. Educated employees are more likely to take precautions and prevent accidental contamination.
- Environmental Controls:
In sensitive environments, such as clean rooms or medical facilities, implement strict environmental controls to minimize the presence of contaminants that could affect bearing performance.
- Regular Cleaning and Maintenance:
Perform regular cleaning and maintenance of machinery and equipment to prevent the buildup of contaminants. Keep bearings protected during maintenance to prevent debris from entering during the process.
- Selection of Suitable Bearings:
Choose bearings that are specifically designed for the application’s environmental conditions. Some bearings have advanced sealing options or specialized coatings that enhance contamination resistance.
By implementing these precautions, industries can significantly reduce the risk of contamination in ball bearings, ensuring smooth operation, extended bearing life, and enhanced equipment reliability.
What Factors should be Considered when Selecting a Ball Bearing for a Particular Application?
Selecting the right ball bearing for a specific application involves careful consideration of various factors to ensure optimal performance, longevity, and reliability. Here are the key factors that should be taken into account:
- Load Type and Magnitude:
Determine the type of load (radial, axial, or combined) and the magnitude of the load that the bearing will need to support. Choose a bearing with the appropriate load-carrying capacity to ensure reliable operation.
- Speed and Operating Conditions:
Consider the rotational speed of the application and the operating conditions, such as temperature, humidity, and exposure to contaminants. Different bearing types and materials are suited for varying speeds and environments.
- Accuracy and Precision:
For applications requiring high accuracy and precision, such as machine tool spindles or optical instruments, choose high-precision bearings that can maintain tight tolerances and minimize runout.
- Space Limitations:
If the application has limited space, choose miniature or compact ball bearings that can fit within the available dimensions without compromising performance.
- Thrust and Radial Loads:
Determine whether the application requires predominantly thrust or radial load support. Choose the appropriate type of ball bearing (thrust, radial, or angular contact) based on the primary load direction.
- Alignment and Misalignment:
If the application experiences misalignment between the shaft and housing, consider self-aligning ball bearings that can accommodate angular misalignment.
- Mounting and Installation:
Consider the ease of mounting and dismounting the bearing. Some applications may benefit from features like flanges or snap rings for secure installation.
- Lubrication and Maintenance:
Choose a bearing with appropriate lubrication options based on the application’s speed and temperature range. Consider whether seals or shields are necessary to protect the bearing from contaminants.
- Environmental Conditions:
Factor in the operating environment, including exposure to corrosive substances, chemicals, water, or dust. Choose materials and coatings that can withstand the specific environmental challenges.
- Bearing Material:
Select a bearing material that suits the application’s requirements. Common materials include stainless steel for corrosion resistance and high-carbon chrome steel for general applications.
- Bearing Arrangement:
Consider whether a single-row, double-row, or multiple bearings in a specific arrangement are needed to accommodate the loads and moments present in the application.
By carefully evaluating these factors, engineers and designers can choose the most suitable ball bearing that aligns with the specific demands of the application, ensuring optimal performance, durability, and overall operational efficiency.
editor by CX 2024-05-03
China Professional CZPT CZPT CZPT High Speed Resistant Double Seal Single Row Deep Groove Ball Bearing5203 bearing driver kit
Product Description
ZHangZhoug Shengya Bearing Technology Co., Ltd offers a Chrome Steel High Speed Resistant Tensioner Bearing with ISO9001 certification. Ideal for CZPT car parts and various automotive applications.
Product Parameters
| Product Name: | double row bearings |
| Model Number: | 5203 |
| Inner Diameter(mm) | 17.5 |
| Outer Diameter(mm) | 40 |
| Height(mm) | 17 |
| Material | Chrome steel |
| Sealed type | OPEN,RZ,2RS,4RS |
| Tolerance | P0,P6,P5,P4,P2 |
| Clearance | C2,C0,C3,C4,C5 |
| Noize level | Z,Z1,Z2,Z3 |
| Application | Automotive Car |
| OEM Service | Accept |
Product Description
double row bearings:
-The bearings are adopted optimized structure designing so that can attain the traits of high temperature resistant, high speed resistant, long life, high speed rotation,impact resistant,high radial load,etc.
-Sealing structure and seals have the traits of high sealing ability, heat-resistant, abrasiveness and also can prevent the leakage of the grease, as they are helpful for lengthening the bearings’ using life.
Detailed Photos
More Products
Quality Control
Company Profile
ZHangZhoug Shengya Bearing Technology Co., Ltd was established in 1996, spHangZhou over 10,000 square meters. With assets exceeding 50 million yuan and a workforce of over 80 employees, including 10+ professionals with intermediate and senior titles, we specialize in producing automotive, motorcycle, general machine, precision machine tool, and home appliance bearings. Our annual production capacity reaches 10 million sets of small to medium-sized bearings.
We excel in manufacturing various non-standard special-shaped bearings, boasting a wide range of options and meticulous craftsmanship. Situated in HangZhou, HangZhou City, a key industrial, commercial, and tourist hub in ZHangZhoug Province, we benefit from a prime location with easy access to transportation.
FAQ
ZHangZhoug Shengya Bearing Technology Co., Ltd
Product Description
Welcome to ZHangZhoug Shengya Bearing Technology Co., Ltd! We are a factory + trade company specializing in bearings.
Product Features:
- Customizable OEM options available
- MOQ of 10pcs, with flexibility for lower quantities at a slightly higher cost
- High-quality bearings made to your specifications
Benefits:
- Customized products tailored to your needs
- Competitive pricing based on quantity purchased
- Reliable and durable bearings for various applications
Contact us today to discuss your bearing requirements and let us provide you with top-notch solutions!
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| After-sales Service: | One Year Warranty |
|---|---|
| Warranty: | One Year Warranty |
| Type: | Tensioner Bearing |
| Samples: |
US$ 2/Piece
1 Piece(Min.Order) | Order Sample |
|---|
| Customization: |
Available
| Customized Request |
|---|
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Shipping Cost:
Estimated freight per unit. |
about shipping cost and estimated delivery time. |
|---|
| Payment Method: |
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|---|---|
|
Initial Payment Full Payment |
| Currency: | US$ |
|---|
| Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
|---|
What are the Materials Typically Used in Manufacturing Ball Bearings and Their Advantages?
Ball bearings are manufactured using a variety of materials, each chosen for its specific properties and advantages in various applications. Here are some commonly used materials in ball bearing manufacturing and their respective benefits:
- High-Carbon Chrome Steel (AISI 52100):
This is the most common material used for ball bearing manufacturing. It offers excellent hardness, wear resistance, and fatigue strength. High-carbon chrome steel bearings are suitable for a wide range of applications, from industrial machinery to automotive components.
- Stainless Steel (AISI 440C, AISI 304, AISI 316):
Stainless steel bearings are corrosion-resistant and suitable for applications where moisture, chemicals, or exposure to harsh environments are concerns. AISI 440C offers high hardness and corrosion resistance, while AISI 304 and AISI 316 provide good corrosion resistance and are often used in food and medical industries.
- Ceramic:
Ceramic bearings use silicon nitride (Si3N4) or zirconia (ZrO2) balls. Ceramic materials offer high stiffness, low density, and excellent resistance to corrosion and heat. Ceramic bearings are commonly used in high-speed and high-temperature applications, such as in aerospace and racing industries.
- Plastic (Polyamide, PEEK):
Plastic bearings are lightweight and offer good corrosion resistance. Polyamide bearings are commonly used due to their low friction and wear properties. Polyether ether ketone (PEEK) bearings provide high-temperature resistance and are suitable for demanding environments.
- Bronze:
Bronze bearings are often used in applications where self-lubrication is required. Bronze has good thermal conductivity and wear resistance. Bearings made from bronze are commonly used in machinery requiring frequent starts and stops.
- Hybrid Bearings:
Hybrid bearings combine steel rings with ceramic balls. These bearings offer a balance between the advantages of both materials, such as improved stiffness and reduced weight. Hybrid bearings are used in applications where high speeds and low friction are essential.
- Specialty Alloys:
For specific applications, specialty alloys may be used to meet unique requirements. For example, bearings used in extreme temperatures or corrosive environments may be made from materials like titanium or hastelloy.
- Coated Bearings:
Bearings may also be coated with thin layers of materials like diamond-like carbon (DLC) or other coatings to enhance performance, reduce friction, and improve wear resistance.
The choice of material depends on factors such as application requirements, operating conditions, load, speed, and environmental factors. Selecting the right material is essential for ensuring optimal bearing performance, longevity, and reliability in diverse industries and applications.
How do Ceramic Ball Bearings Compare to Traditional Steel Ball Bearings in Terms of Performance?
Ceramic ball bearings and traditional steel ball bearings have distinct characteristics that can impact their performance in various applications. Here’s a comparison of how these two types of bearings differ in terms of performance:
- Material Composition:
Ceramic Ball Bearings:
Ceramic ball bearings use ceramic rolling elements, typically made from materials like silicon nitride (Si3N4) or zirconium dioxide (ZrO2). These ceramics are known for their high hardness, low density, and resistance to corrosion and wear.
Traditional Steel Ball Bearings:
Traditional steel ball bearings use steel rolling elements. The type of steel used can vary, but common materials include chrome steel (52100) and stainless steel (440C). Steel bearings are known for their durability and strength.
- Friction and Heat:
Ceramic Ball Bearings:
Ceramic bearings have lower friction coefficients compared to steel bearings. This results in reduced heat generation during operation, contributing to higher efficiency and potential energy savings.
Traditional Steel Ball Bearings:
Steel bearings can generate more heat due to higher friction coefficients. This can lead to increased energy consumption in applications where efficiency is crucial.
- Weight:
Ceramic Ball Bearings:
Ceramic bearings are lighter than steel bearings due to the lower density of ceramics. This weight reduction can be advantageous in applications where minimizing weight is important.
Traditional Steel Ball Bearings:
Steel bearings are heavier than ceramic bearings due to the higher density of steel. This weight may not be as critical in all applications but could impact overall equipment weight and portability.
- Corrosion Resistance:
Ceramic Ball Bearings:
Ceramic bearings have excellent corrosion resistance, making them suitable for applications in corrosive environments, such as marine or chemical industries.
Traditional Steel Ball Bearings:
Steel bearings are susceptible to corrosion, especially in harsh environments. Stainless steel variants offer improved corrosion resistance but may still corrode over time.
- Speed and Precision:
Ceramic Ball Bearings:
Ceramic bearings can operate at higher speeds due to their lower friction and ability to withstand higher temperatures. They are also known for their high precision and low levels of thermal expansion.
Traditional Steel Ball Bearings:
Steel bearings can operate at high speeds as well, but their heat generation may limit performance in certain applications. Precision steel bearings are also available but may have slightly different characteristics compared to ceramics.
- Cost:
Ceramic Ball Bearings:
Ceramic bearings are generally more expensive to manufacture than steel bearings due to the cost of ceramic materials and the challenges in producing precision ceramic components.
Traditional Steel Ball Bearings:
Steel bearings are often more cost-effective to manufacture, making them a more economical choice for many applications.
In conclusion, ceramic ball bearings and traditional steel ball bearings offer different performance characteristics. Ceramic bearings excel in terms of low friction, heat generation, corrosion resistance, and weight reduction. Steel bearings are durable, cost-effective, and widely used in various applications. The choice between the two depends on the specific requirements of the application, such as speed, precision, corrosion resistance, and budget considerations.
What Factors should be Considered when Selecting a Ball Bearing for a Particular Application?
Selecting the right ball bearing for a specific application involves careful consideration of various factors to ensure optimal performance, longevity, and reliability. Here are the key factors that should be taken into account:
- Load Type and Magnitude:
Determine the type of load (radial, axial, or combined) and the magnitude of the load that the bearing will need to support. Choose a bearing with the appropriate load-carrying capacity to ensure reliable operation.
- Speed and Operating Conditions:
Consider the rotational speed of the application and the operating conditions, such as temperature, humidity, and exposure to contaminants. Different bearing types and materials are suited for varying speeds and environments.
- Accuracy and Precision:
For applications requiring high accuracy and precision, such as machine tool spindles or optical instruments, choose high-precision bearings that can maintain tight tolerances and minimize runout.
- Space Limitations:
If the application has limited space, choose miniature or compact ball bearings that can fit within the available dimensions without compromising performance.
- Thrust and Radial Loads:
Determine whether the application requires predominantly thrust or radial load support. Choose the appropriate type of ball bearing (thrust, radial, or angular contact) based on the primary load direction.
- Alignment and Misalignment:
If the application experiences misalignment between the shaft and housing, consider self-aligning ball bearings that can accommodate angular misalignment.
- Mounting and Installation:
Consider the ease of mounting and dismounting the bearing. Some applications may benefit from features like flanges or snap rings for secure installation.
- Lubrication and Maintenance:
Choose a bearing with appropriate lubrication options based on the application’s speed and temperature range. Consider whether seals or shields are necessary to protect the bearing from contaminants.
- Environmental Conditions:
Factor in the operating environment, including exposure to corrosive substances, chemicals, water, or dust. Choose materials and coatings that can withstand the specific environmental challenges.
- Bearing Material:
Select a bearing material that suits the application’s requirements. Common materials include stainless steel for corrosion resistance and high-carbon chrome steel for general applications.
- Bearing Arrangement:
Consider whether a single-row, double-row, or multiple bearings in a specific arrangement are needed to accommodate the loads and moments present in the application.
By carefully evaluating these factors, engineers and designers can choose the most suitable ball bearing that aligns with the specific demands of the application, ensuring optimal performance, durability, and overall operational efficiency.
editor by CX 2024-05-02
China Hot selling Geared Turntable Bearing 011.30.1440 Double Row Ball Swing Bearing 011.30.1734 Slewing Bearing connecting rod bearing
Product Description
Please see details for slewing ring bearing
011.30.1440.190.11.1503
011.30.1440.191.41.1503
011.30.1734.000.11.1503
011.30.1734.001.41.1503
if you need more details, please feel free to contact us for designing and producing
1. Why choose CZPT slewing bearings
Who we are?
We (HangZhou CZPT special heavy-duty and large bearing manufacturing CO., LTD) are a professional
bearing manufacturer in the world, established in 2000, specializing in slewing bearings, slewing drives
and special bearings, with design, production, sales, marketing and service from OD200mm to 8000mm.
For 18 years experiences, our bearings have flied to more than 50 countries.
Our technical team:
We have 60 employees, with 6 experienced engineers and professional technicists.
All our bearings are designed by CAD-programs, made according to customers’ special demands.
Our technical team can also verify safety & reliability depending on the load case and the strength of raceway
as well as gear and bolt connections.
Manufacturing:
Equipped with advanced manufacturing equipments and test instruments, all bearings are of uniform marking
and packing with superior quality, reasonable prices and perfect services.
Quality:
We have been certificated by ISO9001:2008, and we are also aligned to international quality standards
from application consulting and engineering to productions, examinations, documentations and dispatch.
We will prepare additional test reports if customers need.
2. Structure of CZPT slewing bearings
Main Types:
Single row ball slewing ring bearings
Double row ball slewing ring bearings
Crossed roller slewing ring bearing
Three row cylindrical roller slewing bearings
BALL & ROLLER combined slewing bearings
Flanged slewing ring bearing
Gear Type:
Slewing bearings with external gear
Slewing bearings with internal gear
Slew bearings without gear
Flange type:
Slewing bearings with external flange and internal gear
Slew rings with internal flange and external gear
Slew bearings with external and internal flange
3. Double-row ball slewing ring bearings
Characteristic of structure, performance and application:
Our factory is a specialized manufacturer in slewing rings/bearings.
The double-row ball slewing ring bearing has 3 seat-rings. The steel balls and the spacers may be directly arranged into the upper and lower races. Two rows of steel balls with different diameters are fitted according to the force.
Such open mode fitting features extraordinary convenience. The load angels of both upper and lower races are 90° which enable the bearing to bear large axial force and the tipping moment. When the radial force is larger than 1/10 of the axial force the races should be newly designed. As the axle and the dimension of the double-row ball slewing bearing are rather large, the bearing construction is solidity; hence it is especially suitable for tower cranes which require working radius over medium range, mobile cranes and loading and unloading machines.
4. About CZPT bearings Advantages:
4.1 introduction:we are a manufacturer of slewing bearing since 1993, our factory occupies a area of 30000square meters with 4 workshop and 1 office building.
4.2 Featured products: slewing bearing and slewing drive
4.3 Capital: Current is 1 million RMB, but we are increasing the capital to 10 million RMB
4.4 Workers: 60
4.5 Certificate: ISO9001:2008, 3.1 certificate, CCS certificate
All CZPT slew rings can betested by the 3rd party inspection organization if customer requires, such as BV, CCS, SGS, LR, ABS and so on. All swing bearings inspection reports will be supplied to customers, including raw material certificate, heat treatment certificate, UT&PT and so on.
4.6 Annual Exportation: 8 million USD
4.7 Warranty Period: All CZPT slewing ring bearings have a warranty period of 18 months, for some special working condition, warranty period can be lengthened to 3-4 years.
4.8 Production Time: All CZPT slewing ring bearings can be usually delivered timely, usual production time is 15-50 days based on different slew bearings diameters, sometimes slew rings will be in stock.
4.9 Technical Control
All CZPT slewing ring bearings are forged rings with material steel 50Mn or 42CrMo, slewing rings are machined by CNC lathe, slew bearings raceway are quenched via medium-frequency hardening with hardness 55-60HRC, turntable bearings are drilled holes by CNC drilling machine, slew gears are machined by hobbing machine with gear quenched if required, swing bearings then are grinded by grinding machine with higher precision.
5. CZPT Slewing Bearing Packing
5.1 Basic Packing
Bearing surface is covered with the anti-rust oil first; and then wrapped with the plastic film;
And then packed with kraft paper and professional belts;
At last, with wooden box totally at the outer packing to invoid the rust or the moist;
We can depend on the customers demand to be packed;
5.2 CZPT slewing ring bearings can be packed by different ways.
If bearing diameter is less than 2300mm, slewing rings will be usually packed by square plywood case.
If bearing diameter is more than 2300mm, slewing rings can be packed by square plywood case, round plywood case, or steel tripod. Every package way can be totally kept goods safely.
6. CZPT Slewing Bearing Transportation:
Slewing bearings can be offered different delivery terms, such as EXW, FOB, CIF, DDU and so on.
Also, slewing rings can be transported by different transport ways, by express (such as DHL, TNT, UPS, FEDEX and so on), by air, by sea, by truck, by railway and so on.
6. Application:
For harbour and shipyard crane, Marine machine, port hoisting machine, port oil transfer equipment, onshore and offshore crane, excavator, concrete machine, paper machine, plastic and rubber machine, weave machine, steel plant, electronic power plant, wind power generator, other construction and industry machines or equipments.
If you need more information about our product, pls feel free to contact us.
We will get back to you ASAP.
Double row ball slewing Bearing with external gear
| 011.20.571.000.11.1504 | 011.20.571.001.21.1504 | 011.20.571.000.11.1504 |
| 011.20.571.001.21.1504 | 011.20.1220.000.11.1504 | 011.20.1220.001.21.1504 |
| 011.20.1385.000.11.1504 | 011.20.1385.001.21.1504 | 011.25.1200.600.11.1503 |
| 011.25.1200.601.21.1503 | 011.25.1464.000.11.1503 | 011.25.1461.001.21.1503 |
| 011.25.1800.000.00.1503 | 011.25.1800.001.41.1503 | 011.30.1440.190.11.1503 |
| 011.30.1440.191.41.1503 | 011.30.1734.000.11.1503 | 011.30.1734.001.41.1503 |
| 011.30.2031.600.11.1503 | 011.30.2031.601.41.1503 | 011.30.2235.000.11.1503 |
| 011.30.2235.001.41.1503 | 011.35.1750.700.11.1503 | 011.35.1750.701.41.1503 |
| 011.35.2220.000.11.1503 | 011.35.2220.001.41.1503 | 011.35.2620.000.11.1503 |
| 011.35.2620.001.41.1503 | 011.40.2240.000.11.1502 | 011.40.2240.001.41.1502 |
| 011.40.2619.000.11.1502 | 011.40.2619.001.41.1502 | 011.40.2795.000.11.1502 |
| 011.40.2795.001.41.1502 | 011.40.2915.000.11.1502 | 011.40.2915.001.41.1502 |
| 011.40.3150.000.11.1502 | 011.40.3150.001.41.1502 | 011.50.2987.001.49.1502 |
| 011.50.3167.001.49.1502 | 011.50.3347.001.49.1502 | 011.50.3567.001.49.1502 |
| 011.50.3747.001.49.1502 | 011.50.4140.001.49.1502 |
Double row ball slewing Bearing with internal gear
| 012.18.0748.000.11.1504 | 012.18.0748.002.21.1504 | 012.20.571.000.11.1504 |
| 012.20.571.001.21.1504 | 012.20.1085.000.11.1504 | 012.20.1085.001.21.1504 |
| 012.20.1360.000.11.1504 | 012.20.1360.001.21.1504 | 012.25.1360.600.11.1503 |
| 012.25.1360.601.21.1503 | 012.25.1600.000.11.1503 | 012.25.1600.001.21.1503 |
| 012.30.1381.000.11.1503 | 012.30.1381.001.41.1503 | 012.30.1630.000.11.1503 |
| 012.30.1630.001.41.1503 | 012.30.1800.000.11.1503 | 012.30.1800.001.41.1503 |
| 012.30.1995.000.11.1503 | 012.30.1995.001.41.1503 | 012.30.2330.000.11.1503 |
| 012.30.2330.001.41.1503 | 012.30.2538.000.11.1503 | 012.30.2538.001.41.1503 |
| 012.35.1960.400.11.1503 | 012.35.1960.401.41.1503 | 012.35.2500.000.11.1503 |
| 012.35.2500.001.41.1503 | 012.35.2690.000.11.1503 | 012.35.2690.001.41.1503 |
| 012.40.2199.300.11.1502 | 012.40.2199.301.41.1502 | 012.40.2622.400.11.1502 |
| 012.40.2622.401.41.1502 | 012.40.2950.000.11.1502 | 012.40.2950.001.41.1502 |
| 012.40.3300.000.11.1502 | 012.40.3300.001.41.1502 | 012.45.2940.000.19.1502 |
| 012.45.2940.001.48.1502 | 012.45.3400.100.19.1502 | 012.45.3400.101.49.1502 |
| 012.50.2559.201.49.1502 | 012.50.3520.001.49.1502 | 012.50.3739.001.48.1502 |
| 012.50.3839.001.49.1502 |
/* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1
| Standard or Nonstandard: | Standard |
|---|---|
| Feature: | Cold-Resistant, Corrosion-Resistant, Heat-Resistant |
| Sealing Gland: | Sealed On Both Sides |
| Rolling-Element Number: | Double-Row |
| Roller Type: | Deep Groove Raceway |
| Material: | Bearing Steel |
| Samples: |
US$ 1150/Piece
1 Piece(Min.Order) | |
|---|
| Customization: |
Available
| Customized Request |
|---|
Are there Specific Maintenance Practices to Ensure the Longevity of Ball Bearings?
Maintaining ball bearings is essential to ensure their longevity, reliable performance, and prevent premature failure. Proper maintenance practices can extend the lifespan of ball bearings and the equipment they are used in. Here are specific maintenance practices to consider:
- Regular Lubrication:
Implement a regular lubrication schedule using the appropriate lubricant for the application. Lubrication reduces friction, prevents wear, and helps dissipate heat. Follow manufacturer guidelines for lubricant type, quantity, and frequency.
- Clean Environment:
Keep the operating environment clean and free from contaminants. Dust, dirt, and debris can infiltrate bearings and cause damage. Use seals or shields to protect bearings from contaminants, especially in harsh environments.
- Proper Installation:
Ensure correct installation of bearings using proper tools and techniques. Improper installation can lead to misalignment, uneven load distribution, and premature wear. Follow manufacturer recommendations for installation procedures.
- Regular Inspections:
Perform routine visual inspections to check for signs of wear, damage, or contamination. Regular inspections can help identify issues early and prevent further damage. Pay attention to noise, vibration, and temperature changes.
- Temperature Monitoring:
Monitor bearing temperatures during operation using infrared thermometers or sensors. Abnormal temperature increases can indicate inadequate lubrication, misalignment, or other problems.
- Correct Handling:
Handle bearings with care to prevent damage during storage, transportation, and installation. Avoid dropping or subjecting them to impacts that can affect their internal components.
- Bearing Removal and Replacement:
Follow proper procedures when removing and replacing bearings. Use appropriate tools and techniques to avoid damage to the bearing or the surrounding components.
- Alignment Maintenance:
Maintain proper shaft and housing alignment to prevent excessive loads and wear on the bearing. Misalignment can lead to increased stress and premature failure.
- Training and Education:
Provide training to operators and maintenance personnel on proper bearing maintenance and handling practices. Educated personnel are more likely to identify issues and perform maintenance correctly.
- Documented Records:
Keep records of maintenance activities, inspections, lubrication schedules, and any issues encountered. This documentation helps track the bearing’s performance over time and informs future maintenance decisions.
By implementing these maintenance practices, you can ensure the longevity of ball bearings, minimize downtime, reduce operational costs, and maintain the reliability of the equipment they are a part of.
How do Ceramic Ball Bearings Compare to Traditional Steel Ball Bearings in Terms of Performance?
Ceramic ball bearings and traditional steel ball bearings have distinct characteristics that can impact their performance in various applications. Here’s a comparison of how these two types of bearings differ in terms of performance:
- Material Composition:
Ceramic Ball Bearings:
Ceramic ball bearings use ceramic rolling elements, typically made from materials like silicon nitride (Si3N4) or zirconium dioxide (ZrO2). These ceramics are known for their high hardness, low density, and resistance to corrosion and wear.
Traditional Steel Ball Bearings:
Traditional steel ball bearings use steel rolling elements. The type of steel used can vary, but common materials include chrome steel (52100) and stainless steel (440C). Steel bearings are known for their durability and strength.
- Friction and Heat:
Ceramic Ball Bearings:
Ceramic bearings have lower friction coefficients compared to steel bearings. This results in reduced heat generation during operation, contributing to higher efficiency and potential energy savings.
Traditional Steel Ball Bearings:
Steel bearings can generate more heat due to higher friction coefficients. This can lead to increased energy consumption in applications where efficiency is crucial.
- Weight:
Ceramic Ball Bearings:
Ceramic bearings are lighter than steel bearings due to the lower density of ceramics. This weight reduction can be advantageous in applications where minimizing weight is important.
Traditional Steel Ball Bearings:
Steel bearings are heavier than ceramic bearings due to the higher density of steel. This weight may not be as critical in all applications but could impact overall equipment weight and portability.
- Corrosion Resistance:
Ceramic Ball Bearings:
Ceramic bearings have excellent corrosion resistance, making them suitable for applications in corrosive environments, such as marine or chemical industries.
Traditional Steel Ball Bearings:
Steel bearings are susceptible to corrosion, especially in harsh environments. Stainless steel variants offer improved corrosion resistance but may still corrode over time.
- Speed and Precision:
Ceramic Ball Bearings:
Ceramic bearings can operate at higher speeds due to their lower friction and ability to withstand higher temperatures. They are also known for their high precision and low levels of thermal expansion.
Traditional Steel Ball Bearings:
Steel bearings can operate at high speeds as well, but their heat generation may limit performance in certain applications. Precision steel bearings are also available but may have slightly different characteristics compared to ceramics.
- Cost:
Ceramic Ball Bearings:
Ceramic bearings are generally more expensive to manufacture than steel bearings due to the cost of ceramic materials and the challenges in producing precision ceramic components.
Traditional Steel Ball Bearings:
Steel bearings are often more cost-effective to manufacture, making them a more economical choice for many applications.
In conclusion, ceramic ball bearings and traditional steel ball bearings offer different performance characteristics. Ceramic bearings excel in terms of low friction, heat generation, corrosion resistance, and weight reduction. Steel bearings are durable, cost-effective, and widely used in various applications. The choice between the two depends on the specific requirements of the application, such as speed, precision, corrosion resistance, and budget considerations.
What are the Primary Benefits of Using Ball Bearings in Machinery and Equipment?
Ball bearings offer several primary benefits when used in machinery and equipment. Their design and functionality provide advantages that contribute to the efficient and reliable operation of various applications. Here are the key benefits:
- Reduced Friction:
One of the primary benefits of ball bearings is their ability to minimize friction between moving parts. The rolling motion of the balls reduces the contact area and sliding friction, leading to smoother operation and less energy loss due to frictional heating.
- Efficient Load Support:
Ball bearings are engineered to support both radial and axial loads, making them versatile for applications with multidirectional forces. This load-bearing capability allows machinery to handle different types of loads while maintaining performance and stability.
- Smooth Rotation:
Ball bearings enable smooth and precise rotational movement. The rolling motion of the balls provides consistent motion with minimal resistance, ensuring that machinery operates smoothly and without jerks.
- High-Speed Capability:
Due to their low friction and efficient rolling action, ball bearings are suitable for high-speed applications. They allow machinery and equipment to achieve and maintain high rotational speeds without excessive wear or heat buildup.
- Reduced Wear and Maintenance:
The reduced friction in ball bearings leads to lower wear on components. This results in longer service intervals and reduced maintenance requirements, saving both time and maintenance costs.
- Energy Efficiency:
By minimizing friction and reducing energy losses, ball bearings contribute to the overall energy efficiency of machinery. This is particularly important in applications where energy consumption is a concern.
- Versatility:
Ball bearings come in various types, sizes, and configurations, allowing them to be used in a wide range of machinery and equipment. They can be customized to suit specific application requirements.
- Reliability and Longevity:
Ball bearings are designed to withstand heavy loads and harsh operating conditions. Their durability and resistance to wear ensure reliable performance and an extended operational life.
- Quiet Operation:
Ball bearings contribute to quiet machinery operation due to the smooth rolling motion of the balls. This is particularly important in applications where noise reduction is a consideration.
In summary, the primary benefits of using ball bearings in machinery and equipment include reduced friction, efficient load support, smooth rotation, high-speed capability, reduced wear and maintenance, energy efficiency, versatility, reliability, and quiet operation. These benefits collectively enhance the performance and longevity of machinery across various industries.
editor by CX 2024-04-19
China wholesaler Good Quality Gcr15 Stainless Steel SUS440 30cr13 Q Series Qjf1028m Qj222m Qj316n2m Qjf1024m Four-Point Angular Contact Ball Bearings double row ball bearing
Product Description
PRODUCT PICTURES
OUR SERVICES
We can provide manufacturing capabilities and services of regular bearings for you, or customized non-standard bearings as you required.
BEARING:
— Dimensions
— Material
— Tolerance standard
APPEARANCE:
— Logo (Laser Marking)
— Package Design
40+ YEARS EXPERIENCE
CONTINUOUS AND STABLE DELIVERY OF PRODUCTS.
With over 40 years experience of the bearing manufacturing, we know how to make good bearings with less cost consistently and efficiently.
We use advanced CNC turning, grinding, and superfinishing machines to ensure high, stable, and accurate machining. All of your goods, from the most economical category, to the highest rated category, will always be manufactured precisely to the standards you require.
OWN HEAT TREATMENT
CONTROALLABLE COST AND QUALITY.
Heat treatment is 1 of the crucial processes to ensure high performance of bearing materials. Compared with other manufacturers, we can produce higher quality bearings at smaller cost, with a more flexible and controllable production schedule, and in a shorter time.
We have 6 heat treatment production lines.
Bearings are heated uniformly, with small deformation and little/no oxidized decarburization, which can make them have high hardness, high fatigue resistance, good wear resistance, dimensional stability, and excellent mechanical strength.
OUTSTXIHU (WEST LAKE) DIS. QUALITY
LOW NOISE, LOW FRICTION AND LONG LIFE.
All our products are characterized by low noise, low friction and long life. This is due to our attention to the roundness, waviness and surface roughness of bearing raceway.
Our products fully meets the requirements of national and international standards according to the testing result of roughness, roundness, hardness, vibration noise, vibration velocity.
PACKING
PACKAGING THAT HELPS SELL.
1, Inner package
Corrosion and Dust Proof PE plastic film / bag packing + Tube packing, or Wrapping tape for larger bearings.
2, Corrugated Individual Box
Our attractive sales-helpful “3-JOYS” package, or as the design of your package.
3, Outer package
Corrugated carton + Wooden pallet
MODERN WELL-ORGANIZED WAREHOUSE
· Constant temperature (20°C) and humidity (RH 52%) warehouse
· Hundreds of models on hand, short delivery time.
HONOR & SYSTEM CERTIFICATES
EXHIBITION
SAMPLES POLICY
FREE SAMPLES AND SHIPPING
We are happy to send you free samples of our bearings for field testing. All transportation costs will be paid by us.
Please note: Depending on the model and value of samples, this policy may not apply!
Please contact our sales staff for details.
TRANSPORTATION
FASTEST DELIVERY TO CUSTOMERS
CUSTOMERS FEEDBACK
PAYMENT TERMS
To facilitate your payment, we offer a variety of options!
FAQ
1, About the lead time.
This depends on several factors, like Is the production schedule tight? Is there a corresponding model in stock, and is there enough of this model in stock? How many pcs of that model would be ordered?
Simply speaking, based on a 20′ GP container load:
| If the model your Preferred is | Sufficient stock | Lead Time |
| Regular models | YES | Within 7 days |
| Regular models | NO | Within 30 days |
| Non-regular model | NO | About 50 days |
For accurate estimate, please contact with our sale stuff. Thanks.
2, Minimum order quantity.
Even just ONE piece of bearing is ok for us.
3, If you don’t know which model is the right choice…
We would like to give you some advise if you like, according to the real situation and demand of your local market. Our purpose is to help you to get proper and right models for your customers, so that you would make a better sales and income finally.
4, Factory Inspection
We surely would welcome you or your representatives to come to our plants or working offices to take a good look and chat with our hardworking CZPT employees. Ask our sales stuff and she/he will arrange that for you.
OPTIONS OF SPECIFICATION AND STHangZhouRD
| Subject | Symbol | Description |
| Sealing & Sealing type | Z | Metal shield on 1 side. |
| ZZ | Metal shields on both sides. | |
| RS | Rubber seal on 1 side. | |
| 2RS | Rubber seals on both sides. | |
| ZNR | Shield on 1 side, snap ring groove in the outer ring, with snap ring on the opposite side of the shield | |
| 2ZNR | Shield on both sides, snap ring groove in the outer ring, with snap ring | |
| ZNBR | Shield on 1 side, snap ring groove in the outer ring, with snap ring on the same side as the shield | |
| Cage Materials | J | Pressed steel cages |
| M | Solid brass cage | |
| F | Solid cage made from steel or iron | |
| Y | Pressed brass cages. | |
| T | Laminated phenolic cages. | |
| TN | Polyamide cages | |
| TH | Glass-fiber reinforced phenolic resin cages. | |
| TV | Polyamide cage | |
| Cage Designs | P | Window-type cage |
| H | Claw-type cage | |
| A | Cage guided on the bearing outer ring | |
| B | Cage-guided on the bearing inner ring | |
| S | Cage with lubricating slots in the guiding surfaces | |
| D | Carbonitriding cage | |
| W | Welded cage | |
| R | Riveted Cage | |
| Cage Types | N/A | Claw-type cage |
| Ribbon cage | ||
| Crown cage | ||
| Sunflower cage | ||
| Tapered cage | ||
| Tolerances | PN(P0) | Bearings in standard tolerance |
| P6 | Tighter tolerance than standard bearings | |
| P5 | Tolerance tighter than P6 | |
| P4 | Tolerance tighter than P5 | |
| P2 | Tolerance tighter than P4 | |
| Contact Angle | C | Contact angle 15˚. |
| AC | Contact angle 25˚. | |
| CA | Contact angle 20˚. | |
| E | Contact angle 35˚. | |
| B | Contact angle 40˚. | |
| Bearing Sets | DB | Two bearings: back-to-back. |
| DF | Two bearings: face-to-face. | |
| DT | Two bearings: in tandem. | |
| TBT | Three bearings: tandem and back-to-back. | |
| TFT | Three bearings: tandem and face-to-face. | |
| QFC | Four bearings: tandem and face-to-face. | |
| DB | Two bearings: back-to-back. | |
| DF | Two bearings: face-to-face. |
PRODUCT PARAMETERS
This tech sheet may not contain all or every piece of information you want to know. Please contact our sales staff to obtain or compare the information.
| Designation | Boundary Dimension (mm) | Limiting Speed (rpm) | Load Rating (Kn) | Weight | ||||
| Designation | Inner Diameter (d) |
Outside Diameter (D) |
Width (B) |
Grease Lubrication | Oil Lubrication | Dynamic Load (cr) |
Static Load (cor) |
Weight (kg) |
| QJ1571 | 110 | 170 | 28 | 2400 | 3000 | 132 | 172 | 2.6 |
| QJ222 | 110 | 200 | 38 | 2200 | 2800 | 255 | 245 | 5.5 |
| QJ322 | 110 | 240 | 50 | 1800 | 2300 | 267 | 334 | 12.5 |
| QJ1571 | 120 | 180 | 28 | 2200 | 2800 | 108 | 145 | 2.6 |
| QJ224 | 120 | 215 | 40 | 1900 | 2400 | 210 | 260 | 6.9 |
| QJ324 | 120 | 260 | 55 | 1600 | 2200 | 352 | 392 | 15.3 |
| QJ1026 | 130 | 200 | 33 | 1900 | 2400 | 135 | 185 | 4 |
| QJ1571 | 140 | 210 | 33 | 1750 | 2250 | 138 | 195 | 4.2 |
| QJ328 | 140 | 300 | 62 | 1250 | 1650 | 340 | 480 | 22.7 |
| QJ1030X1 | 150 | 224.5 | 35 | 1600 | 2100 | 175 | 245 | 5.1 |
| QJ1030 | 150 | 225 | 35 | 1600 | 2100 | 175 | 245 | 5.1 |
| QJ230 | 150 | 270 | 45 | 1350 | 1750 | 258 | 369 | 11.8 |
| QJ330 | 150 | 320 | 65 | 1150 | 1450 | 365 | 533 | 27 |
| QJ1032 | 160 | 240 | 38 | 1450 | 1850 | 181 | 264 | 6.3 |
| QJ232 | 160 | 290 | 48 | 1200 | 1550 | 282 | 414 | 14.6 |
| QJ1034 | 170 | 260 | 42 | 1300 | 1600 | 226 | 333 | 8.5 |
| QJ234 | 170 | 310 | 52 | 1100 | 1400 | 310 | 480 | 18.2 |
| QJ334 | 170 | 360 | 72 | 1300 | 1200 | 410 | 670 | 41.7 |
| QJ3936X1 | 180 | 259.5 | 52 | 1300 | 1600 | 206 | 310 | 9.5 |
| QJ2936X1 | 180 | 260 | 42 | 1300 | 1600 | 206 | 310 | 7.7 |
| QJ1036 | 180 | 280 | 46 | 1200 | 1500 | 231 | 359 | 11 |
| QJ236 | 180 | 320 | 52 | 1050 | 1300 | 334 | 530 | 19 |
| QJ3938X3 | 190 | 269.5 | 55 | 1200 | 1500 | 216 | 340 | 10.5 |
| QJ1038 | 190 | 290 | 46 | 1100 | 1400 | 236 | 378 | 11.5 |
| QJ2940X2 | 200 | 280 | 51 | 1100 | 1400 | 216 | 340 | 10.2 |
| QJ3940X3 | 200 | 289.5 | 58 | 1100 | 1400 | 235 | 384 | 13.2 |
| QJ1040X1 | 200 | 309.5 | 42 | 1100 | 1400 | 294 | 473 | 15.4 |
| QJ1040 | 200 | 310 | 51 | 1000 | 1260 | 280 | 455 | 14.9 |
| QJ240 | 200 | 360 | 58 | 800 | 1100 | 390 | 656 | 27 |
| QJ3944 | 220 | 300 | 60 | 950 | 1250 | 221 | 364 | 13 |
| QJ3944X1 | 220 | 309.5 | 60 | 900 | 1200 | 246 | 412 | 14.8 |
| QJ1044 | 220 | 340 | 56 | 800 | 1100 | 300 | 503 | 19.6 |
| QJ3948X1 | 240 | 329.5 | 60 | 800 | 1100 | 256 | 444 | 16 |
| QJ1048 | 240 | 360 | 56 | 800 | 1100 | 335 | 611 | 21 |
| QJ1048X1-1 | 240 | 359.5 | 56 | 800 | 1100 | 335 | 611 | 21 |
| QJ2952X1 | 240 | 369.5 | 60 | 900 | 1200 | 313 | 585 | 22 |
| QJ1052 | 260 | 400 | 65 | 800 | 1100 | 320 | 793 | 31.3 |
| QJ1060 | 300 | 460 | 74 | 750 | 1000 | 512 | 985 | 47 |
| QJ1064X1 | 300 | 440 | 65 | 31 | ||||
| QJ1068 | 340 | 520 | 82 | 600 | 800 | 583 | 1330 | 66 |
| QJF1571 | 110 | 170 | 28 | 2400 | 3000 | 132 | 172 | 2.6 |
| QJF322 | 110 | 240 | 50 | 1800 | 2300 | 267 | 334 | 12.5 |
| QJF1571 | 120 | 180 | 28 | 2200 | 2800 | 108 | 145 | 2.6 |
| QJF224 | 120 | 215 | 40 | 1900 | 2400 | 210 | 260 | 6.9 |
| QJF1026 | 130 | 200 | 33 | 1900 | 2400 | 135 | 185 | 4 |
| QJF226 | 130 | 230 | 40 | 1900 | 2400 | 245 | 278 | 7.5 |
| QJF326 | 130 | 280 | 58 | 1400 | 1800 | 310 | 420 | 18.6 |
| QJF1571X1 | 140 | 209.5 | 33 | 1750 | 2250 | 138 | 195 | 4.2 |
| QJF1571 | 140 | 210 | 33 | 1750 | 2250 | 138 | 195 | 4.2 |
| QJF1571X2 | 140 | 210 | 35 | 1750 | 2250 | 138 | 195 | 4.5 |
| QJF1030X1 | 150 | 224.5 | 35 | 1600 | 2100 | 175 | 245 | 5.1 |
| QJF1030 | 150 | 225 | 35 | 1600 | 2100 | 175 | 245 | 5.1 |
| QJF230 | 150 | 270 | 45 | 1350 | 1750 | 258 | 369 | 11.8 |
| QJF330 | 150 | 320 | 65 | 1150 | 1450 | 365 | 533 | 27 |
| QJF1032X1 | 160 | 239.5 | 38 | 1450 | 1850 | 181 | 264 | 6.3 |
| QJF1032 | 160 | 240 | 38 | 1450 | 1850 | 181 | 264 | 6.3 |
| QJF232 | 160 | 290 | 48 | 1200 | 1550 | 282 | 414 | 14.6 |
| QJF1034X1 | 170 | 259.5 | 42 | 1300 | 1600 | 226 | 333 | 8.5 |
| QJF1034 | 170 | 260 | 42 | 1300 | 1600 | 226 | 333 | 8.5 |
| QJF234 | 170 | 310 | 52 | 1000 | 1400 | 310 | 480 | 18.2 |
| QJF3936X1 | 180 | 259.5 | 52 | 1300 | 1600 | 206 | 310 | 9.5 |
| QJF2936X1 | 180 | 260 | 42 | 1300 | 1600 | 206 | 310 | 8 |
| QJF1036 | 180 | 280 | 46 | 1200 | 1500 | 231 | 359 | 11 |
| QJF236 | 180 | 320 | 52 | 1050 | 1300 | 334 | 530 | 19 |
| QJF3938X3 | 190 | 269.5 | 55 | 1200 | 1500 | 216 | 340 | 10.5 |
| QJF1038X1 | 190 | 289.5 | 46 | 1100 | 1400 | 236 | 378 | 11.5 |
| QJF1038 | 190 | 290 | 46 | 1100 | 1200 | 236 | 378 | 11.5 |
| QJF238 | 190 | 340 | 55 | 900 | 1400 | 347 | 569 | 39 |
| QJF2940X2 | 200 | 280 | 51 | 1100 | 1400 | 216 | 340 | 10.2 |
| QJF3940X3 | 200 | 289.5 | 58 | 1100 | 1400 | 235 | 384 | 13.2 |
| QJF1040 | 200 | 310 | 51 | 1000 | 1260 | 280 | 455 | 14.9 |
| QJF240 | 200 | 360 | 58 | 800 | 1100 | 390 | 656 | 27 |
| QJF3944X1 | 220 | 309.5 | 60 | 900 | 1200 | 246 | 412 | 14.8 |
| QJF1044 | 220 | 340 | 56 | 800 | 1100 | 300 | 503 | 19.6 |
| QJF3948X1 | 240 | 329.5 | 60 | 800 | 1100 | 256 | 444 | 16 |
| QJF3948X1-1 | 240 | 340 | 60 | 800 | 1100 | 271 | 477 | 17.6 |
| QJF1048 | 240 | 360 | 56 | 800 | 1100 | 335 | 611 | 21 |
| QJF2952X3 | 260 | 359.5 | 65 | 900 | 1200 | 281 | 513 | 21 |
| QJF2952X1 | 260 | 369.5 | 60 | 900 | 1200 | 313 | 585 | 22 |
| QJF2952X1-1 | 260 | 374.5 | 60 | 900 | 1200 | 313 | 585 | 23 |
| QJF1052 | 260 | 400 | 65 | 800 | 1100 | 320 | 793 | 31.3 |
| QJF2956X3 | 280 | 375 | 65 | 800 | 1100 | 250 | 536 | 21 |
| QJF2956X3-1 | 280 | 389.5 | 65 | 800 | 1100 | 325 | 628 | 25 |
| QJF1056 | 280 | 420 | 65 | 750 | 1000 | 406 | 802 | 33.2 |
| QJF2960X2 | 300 | 420 | 65 | 750 | 1000 | 370 | 755 | 29.3 |
| QJF1060 | 300 | 460 | 74 | 750 | 1000 | 512 | 985 | 47 |
| QJF1064X1 | 320 | 440 | 65 | 31 | ||||
| QJF1064 | 320 | 480 | 74 | 650 | 900 | 499 | 1090 | 49.5 |
| QJF1068X3 | 340 | 500 | 80 | 600 | 800 | 404 | 705 | 53.6 |
| QJF1068 | 340 | 520 | 82 | 600 | 800 | 583 | 1330 | 66 |
/* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1
| Contact Angle: | 40 |
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about shipping cost and estimated delivery time. |
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Can you Provide Examples of Industries where Ball Bearings are Crucial Components?
Ball bearings are essential components in a wide range of industries where smooth motion, load support, and precision are vital. Here are some examples of industries where ball bearings play a crucial role:
- Automotive Industry:
Ball bearings are used in various automotive applications, including wheel hubs, transmissions, engines, steering systems, and suspension components. They provide reliable rotation and support in both passenger vehicles and commercial vehicles.
- Aerospace Industry:
In the aerospace sector, ball bearings are found in aircraft engines, landing gear systems, control surfaces, and avionics equipment. Their ability to handle high speeds and precision is vital for aviation safety.
- Industrial Machinery:
Ball bearings are integral to a wide range of industrial machinery, including pumps, compressors, conveyors, machine tools, printing presses, and textile machinery. They facilitate smooth operation and load distribution in these diverse applications.
- Medical Equipment:
In medical devices and equipment, ball bearings are used in surgical instruments, imaging equipment, dental tools, and laboratory machinery. Their precision and smooth movement are crucial for accurate diagnostics and treatments.
- Robotics and Automation:
Ball bearings are key components in robotic arms, automation systems, and manufacturing machinery. They enable precise movement, high-speed operation, and reliable performance in automated processes.
- Renewable Energy:
Wind turbines and solar tracking systems utilize ball bearings to enable efficient rotation and tracking of the wind blades and solar panels. Ball bearings withstand the dynamic loads and environmental conditions in renewable energy applications.
- Marine and Shipbuilding:
Ball bearings are used in marine applications such as ship propulsion systems, steering mechanisms, and marine pumps. They withstand the corrosive environment and provide reliable performance in maritime operations.
- Heavy Equipment and Construction:
In construction machinery like excavators, bulldozers, and cranes, ball bearings support the movement of heavy loads and enable efficient operation in demanding environments.
- Electronics and Consumer Appliances:
Consumer electronics like electric motors, computer hard drives, and household appliances rely on ball bearings for smooth motion and reliable operation.
- Oil and Gas Industry:
In oil and gas exploration and extraction equipment, ball bearings are used in drilling rigs, pumps, and processing machinery. They handle the high loads and harsh conditions of this industry.
These examples demonstrate how ball bearings are indispensable components in various industries, contributing to the efficiency, reliability, and functionality of diverse mechanical systems and equipment.
How do Ceramic Ball Bearings Compare to Traditional Steel Ball Bearings in Terms of Performance?
Ceramic ball bearings and traditional steel ball bearings have distinct characteristics that can impact their performance in various applications. Here’s a comparison of how these two types of bearings differ in terms of performance:
- Material Composition:
Ceramic Ball Bearings:
Ceramic ball bearings use ceramic rolling elements, typically made from materials like silicon nitride (Si3N4) or zirconium dioxide (ZrO2). These ceramics are known for their high hardness, low density, and resistance to corrosion and wear.
Traditional Steel Ball Bearings:
Traditional steel ball bearings use steel rolling elements. The type of steel used can vary, but common materials include chrome steel (52100) and stainless steel (440C). Steel bearings are known for their durability and strength.
- Friction and Heat:
Ceramic Ball Bearings:
Ceramic bearings have lower friction coefficients compared to steel bearings. This results in reduced heat generation during operation, contributing to higher efficiency and potential energy savings.
Traditional Steel Ball Bearings:
Steel bearings can generate more heat due to higher friction coefficients. This can lead to increased energy consumption in applications where efficiency is crucial.
- Weight:
Ceramic Ball Bearings:
Ceramic bearings are lighter than steel bearings due to the lower density of ceramics. This weight reduction can be advantageous in applications where minimizing weight is important.
Traditional Steel Ball Bearings:
Steel bearings are heavier than ceramic bearings due to the higher density of steel. This weight may not be as critical in all applications but could impact overall equipment weight and portability.
- Corrosion Resistance:
Ceramic Ball Bearings:
Ceramic bearings have excellent corrosion resistance, making them suitable for applications in corrosive environments, such as marine or chemical industries.
Traditional Steel Ball Bearings:
Steel bearings are susceptible to corrosion, especially in harsh environments. Stainless steel variants offer improved corrosion resistance but may still corrode over time.
- Speed and Precision:
Ceramic Ball Bearings:
Ceramic bearings can operate at higher speeds due to their lower friction and ability to withstand higher temperatures. They are also known for their high precision and low levels of thermal expansion.
Traditional Steel Ball Bearings:
Steel bearings can operate at high speeds as well, but their heat generation may limit performance in certain applications. Precision steel bearings are also available but may have slightly different characteristics compared to ceramics.
- Cost:
Ceramic Ball Bearings:
Ceramic bearings are generally more expensive to manufacture than steel bearings due to the cost of ceramic materials and the challenges in producing precision ceramic components.
Traditional Steel Ball Bearings:
Steel bearings are often more cost-effective to manufacture, making them a more economical choice for many applications.
In conclusion, ceramic ball bearings and traditional steel ball bearings offer different performance characteristics. Ceramic bearings excel in terms of low friction, heat generation, corrosion resistance, and weight reduction. Steel bearings are durable, cost-effective, and widely used in various applications. The choice between the two depends on the specific requirements of the application, such as speed, precision, corrosion resistance, and budget considerations.
What is a Ball Bearing and How does it Function in Various Applications?
A ball bearing is a type of rolling-element bearing that uses balls to reduce friction between moving parts and support radial and axial loads. It consists of an outer ring, an inner ring, a set of balls, and a cage that separates and maintains a consistent spacing between the balls. Here’s how ball bearings function in various applications:
- Reduction of Friction:
Ball bearings function by replacing sliding friction with rolling friction. The smooth, spherical balls minimize the contact area between the inner and outer rings, resulting in lower friction and reduced heat generation.
- Radial and Axial Load Support:
Ball bearings are designed to support both radial loads (forces perpendicular to the shaft’s axis) and axial loads (forces parallel to the shaft’s axis). The distribution of balls within the bearing ensures load-carrying capacity in multiple directions.
- Smooth Rotational Movement:
Ball bearings facilitate smooth and precise rotational movement. The rolling motion of the balls allows for controlled and continuous rotation with minimal resistance.
- Applications in Machinery:
Ball bearings are used in a wide range of machinery and equipment, including motors, generators, gearboxes, conveyors, and fans. They enable the efficient transfer of motion while reducing wear and energy losses.
- Automotive Industry:
Ball bearings are extensively used in automobiles for various applications, including wheel hubs, transmission systems, steering mechanisms, and engine components. They provide reliability and durability in challenging automotive environments.
- Industrial Machinery:
In industrial settings, ball bearings support rotating shafts and ensure the smooth operation of equipment such as pumps, compressors, and machine tools.
- High-Speed Applications:
Ball bearings are suitable for high-speed applications due to their low friction and ability to accommodate rapid rotation. They are used in applications like electric motors and aerospace components.
- Precision Instruments:
For precision instruments, such as watches, cameras, and medical devices, ball bearings provide accurate rotational movement and contribute to the overall performance of the instrument.
- Variety of Sizes and Types:
Ball bearings come in various sizes, configurations, and materials to suit different applications. Different types include deep groove ball bearings, angular contact ball bearings, thrust ball bearings, and more.
In summary, ball bearings are essential components in a wide range of applications where smooth rotation, load support, and reduced friction are critical. Their versatility, reliability, and efficiency make them indispensable in industries spanning from automotive to industrial machinery to precision instruments.
editor by CX 2024-04-11
China wholesaler Radial Rulman Gcr15 SUS440 95cr18 SUS420 7200 7201 7202 7203 7204 7205 7206 2RS Zz Bm B AC C Precision Single Row / Double Row Angular Contact Ball Bearings. bearing block
Product Description
PRODUCT PICTURES
OUR SERVICES
We can provide manufacturing capabilities and services of regular bearings for you, or customized non-standard bearings as you required.
BEARING:
— Dimensions
— Material
— Tolerance standard
APPEARANCE:
— Logo (Laser Marking)
— Package Design
40+ YEARS EXPERIENCE
CONTINUOUS AND STABLE DELIVERY OF PRODUCTS.
With over 40 years experience of the bearing manufacturing, we know how to make good bearings with less cost consistently and efficiently.
We use advanced CNC turning, grinding, and superfinishing machines to ensure high, stable, and accurate machining. All of your goods, from the most economical category, to the highest rated category, will always be manufactured precisely to the standards you require.
OWN HEAT TREATMENT
CONTROALLABLE COST AND QUALITY.
Heat treatment is 1 of the crucial processes to ensure high performance of bearing materials. Compared with other manufacturers, we can produce higher quality bearings at smaller cost, with a more flexible and controllable production schedule, and in a shorter time.
We have 6 heat treatment production lines.
Bearings are heated uniformly, with small deformation and little/no oxidized decarburization, which can make them have high hardness, high fatigue resistance, good wear resistance, dimensional stability, and excellent mechanical strength.
OUTSTXIHU (WEST LAKE) DIS. QUALITY
LOW NOISE, LOW FRICTION AND LONG LIFE.
All our products are characterized by low noise, low friction and long life. This is due to our attention to the roundness, waviness and surface roughness of bearing raceway.
Our products fully meets the requirements of national and international standards accoding to the testing result of
roughness, roundness, hardness, vibration noise, vibration velocity.
PACKING
PACKAGING THAT HELPS SELL.
1, Inner package
Corrosion and Dust Proof PE plastic film / bag packing + Tube packing, or Wrapping tape for larger bearings.
2, Corrugated Individual Box
Our attractive sales-helpful “3-JOYS” package, or as the design of your package.
3, Outer package
Corrugated carton + Wooden pallet
MODERN WELL-ORGANIZED WAREHOUSE
· Constant temperature (20°C) and humidity (RH 52%) warehouse
· Hundreds of models on hand, short delivery time.
HONOR & SYSTEM CERTIFICATES
EXHIBITION
SAMPLES POLICY
FREE SAMPLES AND SHIPPING
We are happy to send you free samples of our bearings for field testing. All transportation costs will be paid by us.
Please note: Depending on the model and value of samples, this policy may not apply!
Please contact our sales staff for details.
TRANSPORTATION
FASTEST DELIVERY TO CUSTOMERS
CUSTOMERS FEEDBACK
PAYMENT TERMS
To facilitate your payment, we offer a variety of options!
FAQ
1, About the lead time.
This depends on several factors, like Is the production schedule tight? Is there a corresponding model in stock, and is there enough of this model in stock? How many pcs of that model would be ordered?
Simply speaking, based on a 20′ GP container load:
| If the model your Preferred is | Sufficient stock | Lead Time |
| Regular models | YES | Within 7 days |
| Regular models | NO | Within 30 days |
| Non-regular model | NO | About 50 days |
For accurate estimate, please contact with our sale stuff. Thanks.
2, Minimum order quantity.
Even just ONE piece of bearing is ok for us.
3, If you don’t know which model is the right choice…
We would like to give you some advise if you like, according to the real situation and demand of your local market. Our purpose is to help you to get proper and right models for your customers, so that you would make a better sales and income finally.
4, Factory Inspection
We surely would welcome you or your representatives to come to our plants or working offices to take a good look and chat with our hardworking CZPT employees. Ask our sales stuff and she/he will arrange that for you.
OPTIONS OF SPECIFICATION AND STHangZhouRD
| Subject | Symbol | Description |
| Sealing & Sealing type | Z | Metal shield on 1 side. |
| ZZ | Metal shields on both sides. | |
| RS | Rubber seal on 1 side. | |
| 2RS | Rubber seals on both sides. | |
| ZNR | Shield on 1 side, snap ring groove in the outer ring, with snap ring on the opposite side of the shield | |
| 2ZNR | Shield on both sides, snap ring groove in the outer ring, with snap ring | |
| ZNBR | Shield on 1 side, snap ring groove in the outer ring, with snap ring on the same side as the shield | |
| Cage Materials | J | Pressed steel cages |
| M | Solid brass cage | |
| F | Solid cage made from steel or iron | |
| Y | Pressed brass cages. | |
| T | Laminated phenolic cages. | |
| TN | Polyamide cages | |
| TH | Glass-fiber reinforced phenolic resin cages. | |
| TV | Polyamide cage | |
| Cage Designs | P | Window-type cage |
| H | Claw-type cage | |
| A | Cage guided on the bearing outer ring | |
| B | Cage-guided on the bearing inner ring | |
| S | Cage with lubricating slots in the guiding surfaces | |
| D | Carbonitriding cage | |
| W | Welded cage | |
| R | Riveted Cage | |
| Cage Types | N/A | Claw-type cage |
| Ribbon cage | ||
| Crown cage | ||
| Sunflower cage | ||
| Tapered cage | ||
| Tolerances | PN(P0) | Bearings in standard tolerance |
| P6 | Tighter tolerance than standard bearings | |
| P5 | Tolerance tighter than P6 | |
| P4 | Tolerance tighter than P5 | |
| P2 | Tolerance tighter than P4 | |
| Contact Angle | C | Contact angle 15˚. |
| AC | Contact angle 25˚. | |
| CA | Contact angle 20˚. | |
| E | Contact angle 35˚. | |
| B | Contact angle 40˚. | |
| Bearing Sets | DB | Two bearings: back-to-back. |
| DF | Two bearings: face-to-face. | |
| DT | Two bearings: in tandem. | |
| TBT | Three bearings: tandem and back-to-back. | |
| TFT | Three bearings: tandem and face-to-face. | |
| QFC | Four bearings: tandem and face-to-face. | |
| DB | Two bearings: back-to-back. | |
| DF | Two bearings: face-to-face. |
PRODUCT PARAMETERS
This tech sheet may not contain all or every piece of information you want to know. Please contact our sales staff to obtain or compare the information.
| Designation | Boundary Dimension (mm) | Limiting Speed (rpm) | Load Rating (Kn) | Weight | ||||
| Designation | Inner Diameter (d) |
Outside Diameter (D) |
Width (B) |
Grease Lubrication | Oil Lubrication | Dynamic Load (cr) |
Static Load (cor) |
Weight (kg) |
| 7200C | 10 | 30 | 9 | 18000 | 26000 | 5.81 | 2.93 | 0.032 |
| 7200AC | 10 | 30 | 9 | 18000 | 26000 | 5.5 | 2.85 | 0.032 |
| 7200B | 10 | 30 | 9 | 16000 | 25000 | 5.3 | 2.7 | 0.032 |
| 7201C | 12 | 32 | 10 | 17000 | 24000 | 7.3 | 3.4 | 0.039 |
| 7201AC | 12 | 32 | 10 | 17000 | 24000 | 7.09 | 3.3 | 0.039 |
| 7201B | 12 | 32 | 10 | 15000 | 23000 | 6.9 | 3.2 | 0.039 |
| 7202C | 15 | 35 | 11 | 16000 | 22000 | 8.6 | 4.5 | 0.048 |
| 7202AC | 15 | 35 | 11 | 16000 | 22000 | 8.3 | 4.3 | 0.048 |
| 7202B | 15 | 35 | 11 | 15000 | 21000 | 7.9 | 4.2 | 0.048 |
| 7203C | 17 | 40 | 12 | 15000 | 20000 | 10.8 | 6.1 | 0.069 |
| 7203AC | 17 | 40 | 12 | 15000 | 20000 | 10.5 | 5.6 | 0.069 |
| 7203B | 17 | 40 | 12 | 14000 | 19000 | 9.9 | 5.5 | 0.069 |
| 7204C | 20 | 47 | 14 | 13000 | 18000 | 15.5 | 8.9 | 0.110 |
| 7204AC | 20 | 47 | 14 | 13000 | 18000 | 15 | 8.5 | 0.110 |
| 7204B | 20 | 47 | 14 | 12000 | 16000 | 13.4 | 7.6 | 0.110 |
| 7205C | 25 | 52 | 15 | 11000 | 16000 | 16.5 | 10 | 0.130 |
| 7205AC | 25 | 52 | 15 | 11000 | 16000 | 15.8 | 9.7 | 0.130 |
| 7205B | 25 | 52 | 15 | 10000 | 14000 | 14.8 | 9.3 | 0.130 |
| 7206C | 30 | 62 | 16 | 9000 | 13000 | 23 | 14.7 | 0.217 |
| 7206AC | 30 | 62 | 16 | 9000 | 13000 | 22.1 | 13.5 | 0.217 |
| 7206B | 30 | 62 | 16 | 8500 | 12000 | 20.5 | 13.5 | 0.217 |
| 7207C | 35 | 72 | 17 | 8000 | 11000 | 30.3 | 20 | 0.313 |
| 7207AC | 35 | 72 | 17 | 8000 | 11000 | 29.2 | 18 | 0.313 |
| 7207B | 35 | 72 | 17 | 7500 | 10000 | 28.3 | 14.8 | 0.313 |
| 7208C | 40 | 80 | 18 | 7500 | 10000 | 38.4 | 26.3 | 0.402 |
| 7208AC | 40 | 80 | 18 | 7500 | 10000 | 36.8 | 25.4 | 0.402 |
| 7208B | 40 | 80 | 18 | 6700 | 9000 | 34.5 | 23.8 | 0.402 |
| 7209C | 45 | 85 | 19 | 6700 | 9000 | 40.4 | 29.3 | 0.460 |
| 7209AC | 45 | 85 | 19 | 6700 | 9000 | 38.6 | 28.1 | 0.460 |
| 7209B | 45 | 85 | 19 | 6300 | 8500 | 34 | 24.6 | 0.460 |
| 7210C | 50 | 90 | 20 | 6300 | 8500 | 42.8 | 31.3 | 0.510 |
| 7210AC | 50 | 90 | 20 | 6300 | 8500 | 40.8 | 30.1 | 0.510 |
| 7210B | 50 | 90 | 20 | 5600 | 8000 | 40.4 | 25.6 | 0.510 |
| 7211C | 55 | 100 | 21 | 5600 | 7000 | 53.2 | 39.9 | 0.680 |
| 7211AC | 55 | 100 | 21 | 5600 | 7000 | 50.8 | 38.2 | 0.680 |
| 7211B | 55 | 100 | 21 | 5300 | 7000 | 46.3 | 36 | 0.680 |
| 7212C | 60 | 110 | 22 | 5300 | 7000 | 61 | 48.2 | 1.571 |
| 7212AC | 60 | 110 | 22 | 5300 | 7000 | 58.1 | 46 | 1.571 |
| 7212B | 60 | 110 | 22 | 4800 | 6300 | 56.1 | 44.3 | 1.571 |
| 7213C | 65 | 120 | 23 | 4800 | 6300 | 69.8 | 54.4 | 1.090 |
| 7213AC | 65 | 120 | 23 | 4800 | 6300 | 66.6 | 52.1 | 1.090 |
| 7213B | 65 | 120 | 23 | 4300 | 6000 | 65.7 | 50.2 | 1.090 |
| 7214C | 70 | 125 | 24 | 4500 | 5800 | 72.8 | 59.7 | 1.180 |
| 7214AC | 70 | 125 | 24 | 4500 | 5800 | 69.4 | 57 | 1.180 |
| 7214B | 70 | 125 | 24 | 4000 | 5600 | 70.4 | 56.3 | 1.180 |
| 7215C | 75 | 130 | 25 | 4300 | 5600 | 79.2 | 65.6 | 1.320 |
| 7215AC | 75 | 130 | 25 | 4300 | 5600 | 75.3 | 62.8 | 1.320 |
| 7215B | 75 | 130 | 25 | 3800 | 5300 | 68.6 | 58.2 | 1.320 |
| 7216C | 80 | 140 | 26 | 4000 | 5300 | 92.5 | 66.2 | 1.570 |
| 7216AC | 80 | 140 | 26 | 4000 | 5300 | 91.3 | 65.1 | 1.570 |
| 7216B | 80 | 140 | 26 | 4000 | 5300 | 78.7 | 65.7 | 1.570 |
| 7217C | 85 | 150 | 28 | 3800 | 5000 | 99.7 | 84.6 | 2.571 |
| 7217AC | 85 | 150 | 28 | 3800 | 5000 | 94.9 | 80.8 | 2.571 |
| 7217B | 85 | 150 | 28 | 3600 | 4800 | 83.2 | 74.1 | 2.571 |
| 7218C | 90 | 160 | 30 | 3600 | 4800 | 128 | 111.7 | 2.470 |
| 7218AC | 90 | 160 | 30 | 3600 | 4800 | 122 | 106.5 | 2.470 |
| 7218B | 90 | 160 | 30 | 3200 | 4300 | 107.6 | 92.4 | 2.470 |
| 7219C | 95 | 170 | 32 | 3400 | 4500 | 134.6 | 112.2 | 3.571 |
| 7219AC | 95 | 170 | 32 | 3400 | 4500 | 128.4 | 107.8 | 3.571 |
| 7219B | 95 | 170 | 32 | 3000 | 4000 | 121.4 | 106.7 | 3.571 |
| 7220C | 100 | 180 | 34 | 3200 | 4300 | 148 | 125 | 3.620 |
| 7220AC | 100 | 180 | 34 | 3200 | 4300 | 142 | 120.6 | 3.620 |
| 7220B | 100 | 180 | 34 | 2800 | 3800 | 140 | 102.5 | 3.620 |
| 7221C | 105 | 190 | 36 | 3000 | 4000 | 166.6 | 138.6 | 4.290 |
| 7221AC | 105 | 190 | 36 | 3000 | 4000 | 159 | 135.1 | 4.290 |
| 7221B | 105 | 190 | 36 | 2800 | 3800 | 143.3 | 128.5 | 4.290 |
| 7222C | 110 | 200 | 38 | 2800 | 3800 | 184.7 | 154.8 | 5.030 |
| 7222AC | 110 | 200 | 38 | 2800 | 3800 | 176.3 | 151.2 | 5.030 |
| 7222B | 110 | 200 | 38 | 2400 | 3400 | 153.8 | 144.3 | 5.030 |
| 7224C | 120 | 215 | 40 | 2400 | 3400 | 203.1 | 178.4 | 7.080 |
| 7224AC | 120 | 215 | 40 | 2400 | 3400 | 193.6 | 170.9 | 7.080 |
| 7224B | 120 | 215 | 40 | 2200 | 3200 | 165.4 | 161.4 | 7.080 |
| 7226C | 130 | 230 | 40 | 2000 | 3000 | 206.6 | 209.2 | 8.100 |
| 7226AC | 130 | 230 | 40 | 2000 | 3000 | 196.4 | 200.1 | 8.100 |
| 7226B | 130 | 230 | 40 | 1800 | 2800 | 170.8 | 174.2 | 8.100 |
| 7228C | 140 | 250 | 42 | 2000 | 2800 | 227.2 | 238.3 | 9.950 |
| 7228AC | 140 | 250 | 42 | 2000 | 2800 | 216.9 | 227.4 | 9.950 |
| 7228B | 140 | 250 | 42 | 1800 | 2600 | 212.2 | 197.3 | 9.950 |
| 7232AC | 160 | 290 | 48 | 1700 | 2400 | 250 | 288 | 15.49 |
| 7234AC | 170 | 310 | 52 | 1600 | 2200 | 281 | 341 | 19.69 |
| 7236AC | 180 | 320 | 52 | 2200 | 2700 | 293 | 362 | 20.26 |
| 7238AC | 190 | 340 | 55 | 2000 | 2500 | 303 | 390 | 24.31 |
| 7240AC | 200 | 360 | 58 | 1300 | 1800 | 343 | 449 | 28.82 |
| 7244AC | 220 | 400 | 65 | 1100 | 1600 | 358 | 482 | 33.60 |
| 7248AC | 240 | 440 | 72 | 1500 | 1800 | 403 | 595 | 51.8 |
/* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1
| Contact Angle: | 40 |
|---|---|
| Aligning: | Aligning Bearing |
| Separated: | Unseparated |
| Samples: |
US$ 1/Piece
1 Piece(Min.Order) | Order Sample |
|---|
| Customization: |
Available
| Customized Request |
|---|
.shipping-cost-tm .tm-status-off{background: none;padding:0;color: #1470cc}
|
Shipping Cost:
Estimated freight per unit. |
about shipping cost and estimated delivery time. |
|---|
| Payment Method: |
|
|---|---|
|
Initial Payment Full Payment |
| Currency: | US$ |
|---|
| Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
|---|
Can you Provide Examples of Industries where Ball Bearings are Crucial Components?
Ball bearings are essential components in a wide range of industries where smooth motion, load support, and precision are vital. Here are some examples of industries where ball bearings play a crucial role:
- Automotive Industry:
Ball bearings are used in various automotive applications, including wheel hubs, transmissions, engines, steering systems, and suspension components. They provide reliable rotation and support in both passenger vehicles and commercial vehicles.
- Aerospace Industry:
In the aerospace sector, ball bearings are found in aircraft engines, landing gear systems, control surfaces, and avionics equipment. Their ability to handle high speeds and precision is vital for aviation safety.
- Industrial Machinery:
Ball bearings are integral to a wide range of industrial machinery, including pumps, compressors, conveyors, machine tools, printing presses, and textile machinery. They facilitate smooth operation and load distribution in these diverse applications.
- Medical Equipment:
In medical devices and equipment, ball bearings are used in surgical instruments, imaging equipment, dental tools, and laboratory machinery. Their precision and smooth movement are crucial for accurate diagnostics and treatments.
- Robotics and Automation:
Ball bearings are key components in robotic arms, automation systems, and manufacturing machinery. They enable precise movement, high-speed operation, and reliable performance in automated processes.
- Renewable Energy:
Wind turbines and solar tracking systems utilize ball bearings to enable efficient rotation and tracking of the wind blades and solar panels. Ball bearings withstand the dynamic loads and environmental conditions in renewable energy applications.
- Marine and Shipbuilding:
Ball bearings are used in marine applications such as ship propulsion systems, steering mechanisms, and marine pumps. They withstand the corrosive environment and provide reliable performance in maritime operations.
- Heavy Equipment and Construction:
In construction machinery like excavators, bulldozers, and cranes, ball bearings support the movement of heavy loads and enable efficient operation in demanding environments.
- Electronics and Consumer Appliances:
Consumer electronics like electric motors, computer hard drives, and household appliances rely on ball bearings for smooth motion and reliable operation.
- Oil and Gas Industry:
In oil and gas exploration and extraction equipment, ball bearings are used in drilling rigs, pumps, and processing machinery. They handle the high loads and harsh conditions of this industry.
These examples demonstrate how ball bearings are indispensable components in various industries, contributing to the efficiency, reliability, and functionality of diverse mechanical systems and equipment.
What Role do Seals and Shields Play in Protecting Ball Bearings from Dirt and Debris?
Seals and shields are critical components of ball bearings that play a crucial role in protecting them from dirt, debris, moisture, and contaminants in various applications. These protective features help maintain the integrity of the bearing’s internal components and ensure reliable operation. Here’s how seals and shields contribute to bearing protection:
- Contaminant Exclusion:
Seals and shields create a physical barrier between the external environment and the bearing’s interior. They prevent dust, dirt, water, and other contaminants from entering the bearing and coming into contact with the rolling elements and raceways.
- Lubrication Retention:
Seals and shields help retain lubrication within the bearing. They prevent the lubricant from escaping and contaminants from entering, ensuring that the bearing remains properly lubricated for smooth operation and reduced friction.
- Corrosion Prevention:
Seals and shields protect bearing components from exposure to moisture and corrosive substances. By preventing moisture ingress, they help extend the bearing’s lifespan by minimizing the risk of corrosion-related damage.
- Extended Bearing Life:
Seals and shields contribute to the overall longevity of the bearing by reducing wear and damage caused by contaminants. They help maintain a clean internal environment, which promotes proper rolling contact and minimizes the risk of premature failure.
- Enhanced Performance in Harsh Environments:
In applications exposed to harsh conditions, such as outdoor machinery or industrial settings, seals and shields are vital. They protect bearings from abrasive particles, chemicals, and extreme temperatures, ensuring reliable performance despite challenging conditions.
- Noise and Vibration Reduction:
Seals and shields can help reduce noise and vibration generated by the bearing. They provide additional damping and stability, contributing to smoother operation and enhanced user comfort in noise-sensitive applications.
- Customized Protection:
Manufacturers offer a variety of seal and shield designs to suit different application requirements. Some seals provide higher levels of protection against contamination, while others are designed for high-speed or high-temperature environments.
- Trade-Offs:
While seals and shields offer significant benefits, they can also introduce some friction due to contact with the bearing’s inner or outer ring. Engineers must balance the level of protection with the desired operating characteristics, considering factors like friction, speed, and environmental conditions.
Overall, seals and shields play a vital role in maintaining the integrity and performance of ball bearings. By effectively preventing contaminants from entering and preserving lubrication, they ensure the smooth and reliable operation of machinery and equipment in a wide range of applications.
How do Ball Bearings Differ from Other Types of Bearings like Roller Bearings?
Ball bearings and roller bearings are two common types of rolling-element bearings, each with distinct designs and characteristics. Here’s a comparison of ball bearings and roller bearings:
- Design:
Ball Bearings: Ball bearings use spherical balls to separate and reduce friction between the bearing’s inner and outer rings. The balls enable rolling motion and smooth contact, minimizing friction.
Roller Bearings: Roller bearings, as the name suggests, use cylindrical or tapered rollers instead of balls. These rollers have larger contact areas, distributing loads over a broader surface.
- Friction and Efficiency:
Ball Bearings: Due to the point contact between the balls and the rings, ball bearings have lower friction and are more efficient at high speeds.
Roller Bearings: Roller bearings have a larger contact area, resulting in slightly higher friction compared to ball bearings. They are more suitable for heavy-load applications where efficiency is prioritized over high speeds.
- Load Capacity:
Ball Bearings: Ball bearings excel at handling light to moderate loads in both radial and axial directions. They are commonly used in applications where smooth rotation and low friction are important.
Roller Bearings: Roller bearings have a higher load-carrying capacity than ball bearings. They can support heavier radial and axial loads and are preferred for applications with significant loads or impact forces.
- Variability:
Ball Bearings: Ball bearings come in various designs, including deep groove, angular contact, and thrust ball bearings, each suitable for different applications.
Roller Bearings: Roller bearings have diverse types, including cylindrical, spherical, tapered, and needle roller bearings, each optimized for specific load and motion requirements.
- Speed Capability:
Ball Bearings: The reduced friction in ball bearings makes them suitable for high-speed applications, such as electric motors and precision machinery.
Roller Bearings: Roller bearings can handle higher loads but are generally better suited for moderate to low speeds due to slightly higher friction.
- Applications:
Ball Bearings: Ball bearings are used in applications where smooth motion, low friction, and moderate loads are essential, such as electric fans, bicycles, and some automotive components.
Roller Bearings: Roller bearings find applications in heavy machinery, construction equipment, automotive transmissions, and conveyor systems, where heavier loads and durability are crucial.
In summary, ball bearings and roller bearings differ in their design, friction characteristics, load capacities, speed capabilities, and applications. The choice between them depends on the specific requirements of the machinery and the type of loads and forces involved.
editor by CX 2024-04-03
China Custom CZPT 1301 Etn9 Self-Aligning Ball Bearings 1301 Etn9 Self Aligning Double Row Bearings bearing example
Product Description
Product Description
Our Products:
Tapered, cylindrical, ball bearings, self-aligning roller bearings, base bearings, car hub bearings, truck hubs, and other products.
We can customize the bearing according to the drawings or samples provided by the customer.
Product Parameters
| Double Row Self-aligning Ball Bearing | |||
| 1204 | 1305 | 11204 | 2205 |
| 1205 | 1306 | 11205 | 2205K |
| 1206 | 1307 | 11206 | 2206 |
| 1207 | 1307 | 11207 | 2206K |
| 1208 | 1308 | 11208 | 2207 |
| 1209 | 1309 | 11209 | 2207K |
| 1210 | 1310 | 11210 | 2208 |
| 1211 | 1312 | 11211 | 2208K |
| 1212 | 1313 | 11212 | 2209 |
| 1213 | 1314 | 11214 | 2209K |
| 1214 | 1315 | 11215 | 2210 |
| 1215 | 1316 | 11216 | 2210K |
| 1216 | 1318 | 11217 | 2211 |
| 1217 | 1320 | 11218 | 2211K |
| 11305 | 2212 | ||
| 11306 | 2212K | ||
| 11307 | 2213 | ||
| 11308 | 2213K | ||
| 11309 | 22147 | ||
| 11310 | 2214K | ||
| 11311 | 2215 | ||
| 11312 | 2215K | ||
| 11313 | 2216 | ||
| 11314 | 2216K | ||
| 11315 | 2217 | ||
| 11316 | 2217K | ||
| 11317 | 2304 | ||
| 11318 | 2304K | ||
MAIN PRODUCTS
Tapered roller bearings, cylindrical roller bearings, ball bearings, self-aligning roller bearings, base bearings, car hub bearings,
truck hub bearings and other products, We can customize the bearing according to the drawings or samples provided by the customer
Application
Grain machinery, textile machinery, washing machinery, engineering machinery, industrial deceleration machinery, woodworking
machinery,papermaking machinery, mining machinery, coal mining machinery, lifting machinery, construction machinery,
large transportation equipment,chemical machinery, petroleum machinery, metallurgical industry, large steel mills, cement plants,
energy industry, automobiles, trucks, etc.
Packaging & Shipping
STHangZhouRD PACKAGING:
Plastic bag + single box + carton + tray;
Industrial packaging + carton + pallet;
We also can According to your requirements change.
Company Profile
HangZhou CZPT Trading Co., Ltd. was founded in August 2014. It is a bearing manufacturer integrating
research, development, and sale of bearings, with a floor area of 18,000 square meters and a plant area of 4,800
square meters. The company has a state-level enterprise technology center and a number of provincial high-tech
enterprises with strong technical strength. our company was honored as a competitive brand in the market.
Equipped with modern production equipment and advanced detection instruments, the company especially
produces Bearings including 3 varieties of spherical roller bearings, namely cylindrical roller bearings,
tapered roller bearings and thrust spherical roller bearings, Automobile Hub Bearing, to replace imported
high-end products.
With the precision of grade P0, grade P6 P5 P4, we bearings are widely used in complete products in metallurgical, mining, petroleum, chemical, coal, cement, papermaking, wind power, heavy machinery, engineering machinery, and port machinery industries. With self-run import & export rights, we sell our products across China and in tens of other countries and areas such as the United States, Canada, Italy, Russia, Germany, and South Africa.
We would like to serve customers around the world with our reliable products, reasonable prices, and attentive service. The leading products of the company cover 3 main categories which include more than 3,000 types of bearing products.
FAQ
1.What is your Before-sales Service?
Offer to bear related consultation about technology and application;
Help customers with bearing choice, clearance configuration, products’ life and reliability analysis;
Offer highly cost-effective and complete solution program according to site conditions;
Offer localized program on introduced equipment to save running cost
2.What is your latest delivery time?
If the goods are in stock, usually 5-10 days. Or if the goods are not in stock, it is 15-20 days, which is based
on the quantity.
3.Does your company have quality assurance?
Yes, for 2 years.
4.What is the competitiveness of your company’s products compared to other companies?
High precision, high speed, low noise.
5.What are the advantages of your company’s services compared to other companies?
Answer questions online 24 hours a day, reply in a timely manner, and provide various documents required
by customers for customs clearance or sales. 100% after-sales service.
6.Which payment method does your company support?
30% deposit,balance payment before delivery.
7.How to contact us quickly?
Please send us an inquiry or message and leave your other contact information, such as phone number,
account or account, we will contact you as soon as possible.
/* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1
| OEM: | Available |
|---|---|
| Rolling Body: | Ball Bearings |
| The Number of Rows: | Single |
| Outer Dimension: | Small (28-55mm) |
| Material: | Bearing Steel |
| Spherical: | Non-Aligning Bearings |
| Samples: |
US$ 0/Piece
1 Piece(Min.Order) | |
|---|
| Customization: |
Available
| Customized Request |
|---|
What are the Materials Typically Used in Manufacturing Ball Bearings and Their Advantages?
Ball bearings are manufactured using a variety of materials, each chosen for its specific properties and advantages in various applications. Here are some commonly used materials in ball bearing manufacturing and their respective benefits:
- High-Carbon Chrome Steel (AISI 52100):
This is the most common material used for ball bearing manufacturing. It offers excellent hardness, wear resistance, and fatigue strength. High-carbon chrome steel bearings are suitable for a wide range of applications, from industrial machinery to automotive components.
- Stainless Steel (AISI 440C, AISI 304, AISI 316):
Stainless steel bearings are corrosion-resistant and suitable for applications where moisture, chemicals, or exposure to harsh environments are concerns. AISI 440C offers high hardness and corrosion resistance, while AISI 304 and AISI 316 provide good corrosion resistance and are often used in food and medical industries.
- Ceramic:
Ceramic bearings use silicon nitride (Si3N4) or zirconia (ZrO2) balls. Ceramic materials offer high stiffness, low density, and excellent resistance to corrosion and heat. Ceramic bearings are commonly used in high-speed and high-temperature applications, such as in aerospace and racing industries.
- Plastic (Polyamide, PEEK):
Plastic bearings are lightweight and offer good corrosion resistance. Polyamide bearings are commonly used due to their low friction and wear properties. Polyether ether ketone (PEEK) bearings provide high-temperature resistance and are suitable for demanding environments.
- Bronze:
Bronze bearings are often used in applications where self-lubrication is required. Bronze has good thermal conductivity and wear resistance. Bearings made from bronze are commonly used in machinery requiring frequent starts and stops.
- Hybrid Bearings:
Hybrid bearings combine steel rings with ceramic balls. These bearings offer a balance between the advantages of both materials, such as improved stiffness and reduced weight. Hybrid bearings are used in applications where high speeds and low friction are essential.
- Specialty Alloys:
For specific applications, specialty alloys may be used to meet unique requirements. For example, bearings used in extreme temperatures or corrosive environments may be made from materials like titanium or hastelloy.
- Coated Bearings:
Bearings may also be coated with thin layers of materials like diamond-like carbon (DLC) or other coatings to enhance performance, reduce friction, and improve wear resistance.
The choice of material depends on factors such as application requirements, operating conditions, load, speed, and environmental factors. Selecting the right material is essential for ensuring optimal bearing performance, longevity, and reliability in diverse industries and applications.
What Precautions should be taken to Prevent Contamination of Ball Bearings in Industrial Settings?
Preventing contamination of ball bearings is essential to ensure their proper function, longevity, and overall performance in industrial settings. Contaminants such as dust, dirt, debris, and particles can significantly impact bearing operation. Here are important precautions to take to prevent contamination of ball bearings:
- Effective Sealing:
Choose ball bearings with appropriate seals or shields to prevent the ingress of contaminants. Seals provide a physical barrier against dust, moisture, and particles, ensuring the bearing’s interior remains clean.
- Clean Environment:
Maintain a clean working environment around the machinery and equipment. Regularly clean the surrounding areas to prevent the accumulation of dirt and debris that could enter the bearings.
- Proper Handling:
Handle bearings with clean hands and use gloves if necessary. Avoid touching the bearing surfaces with bare hands, as natural skin oils can transfer contaminants onto the bearing.
- Clean Tools and Equipment:
Use clean tools and equipment during installation and maintenance to prevent introducing contaminants. Ensure that tools are properly cleaned before coming into contact with the bearing components.
- Contamination-Controlled Workstations:
Establish contamination-controlled workstations for bearing handling, installation, and maintenance. These areas should have proper ventilation, filtered air, and minimal exposure to external contaminants.
- Proper Lubrication:
Use the correct lubricant in appropriate quantities. Lubricants help create a barrier against contaminants and reduce friction. Regularly inspect and replenish lubrication to maintain its effectiveness.
- Regular Inspections:
Implement a routine inspection schedule to monitor the condition of the bearings. Look for signs of contamination, wear, and damage. Address any issues promptly to prevent further damage.
- Training and Education:
Train personnel on proper handling, installation, and maintenance practices to minimize the risk of contamination. Educated employees are more likely to take precautions and prevent accidental contamination.
- Environmental Controls:
In sensitive environments, such as clean rooms or medical facilities, implement strict environmental controls to minimize the presence of contaminants that could affect bearing performance.
- Regular Cleaning and Maintenance:
Perform regular cleaning and maintenance of machinery and equipment to prevent the buildup of contaminants. Keep bearings protected during maintenance to prevent debris from entering during the process.
- Selection of Suitable Bearings:
Choose bearings that are specifically designed for the application’s environmental conditions. Some bearings have advanced sealing options or specialized coatings that enhance contamination resistance.
By implementing these precautions, industries can significantly reduce the risk of contamination in ball bearings, ensuring smooth operation, extended bearing life, and enhanced equipment reliability.
What is a Ball Bearing and How does it Function in Various Applications?
A ball bearing is a type of rolling-element bearing that uses balls to reduce friction between moving parts and support radial and axial loads. It consists of an outer ring, an inner ring, a set of balls, and a cage that separates and maintains a consistent spacing between the balls. Here’s how ball bearings function in various applications:
- Reduction of Friction:
Ball bearings function by replacing sliding friction with rolling friction. The smooth, spherical balls minimize the contact area between the inner and outer rings, resulting in lower friction and reduced heat generation.
- Radial and Axial Load Support:
Ball bearings are designed to support both radial loads (forces perpendicular to the shaft’s axis) and axial loads (forces parallel to the shaft’s axis). The distribution of balls within the bearing ensures load-carrying capacity in multiple directions.
- Smooth Rotational Movement:
Ball bearings facilitate smooth and precise rotational movement. The rolling motion of the balls allows for controlled and continuous rotation with minimal resistance.
- Applications in Machinery:
Ball bearings are used in a wide range of machinery and equipment, including motors, generators, gearboxes, conveyors, and fans. They enable the efficient transfer of motion while reducing wear and energy losses.
- Automotive Industry:
Ball bearings are extensively used in automobiles for various applications, including wheel hubs, transmission systems, steering mechanisms, and engine components. They provide reliability and durability in challenging automotive environments.
- Industrial Machinery:
In industrial settings, ball bearings support rotating shafts and ensure the smooth operation of equipment such as pumps, compressors, and machine tools.
- High-Speed Applications:
Ball bearings are suitable for high-speed applications due to their low friction and ability to accommodate rapid rotation. They are used in applications like electric motors and aerospace components.
- Precision Instruments:
For precision instruments, such as watches, cameras, and medical devices, ball bearings provide accurate rotational movement and contribute to the overall performance of the instrument.
- Variety of Sizes and Types:
Ball bearings come in various sizes, configurations, and materials to suit different applications. Different types include deep groove ball bearings, angular contact ball bearings, thrust ball bearings, and more.
In summary, ball bearings are essential components in a wide range of applications where smooth rotation, load support, and reduced friction are critical. Their versatility, reliability, and efficiency make them indispensable in industries spanning from automotive to industrial machinery to precision instruments.
editor by CX 2024-03-30
China Best Sales Free Samples Bearing Supplier High Speed Ball Bearing Roller 6308 Deep Groove Ball Bearing double row ball bearing
Product Description
| Truck bearing oiler | |
| Weight | 110KG |
| Size | 720*650*1270mm |
| Power | 220V50HZ/60HZ,380V |
| Filling Time | 3-10s |
| Minimum Oiling Bearing Hole | 45MM |
| Maximum Oiling Bearing Hole | 120MM |
| Filling Height | 150MM |
| Barrel Heating | YES |
We are a Chinese factory integrating production and sales. Our company was founded by 2 brothers, 1 is responsible for the production of the factory, the other is responsible for the sales of products. All machines of our factory are independently developed and manufactured, and all machines can be customized. We want to find a strong agent in each country to cooperate with.
Our company occupies more than 2/3 of the market in the whole Chinese market. The customer groups we mainly target are medium and high-end customers, so the quality and reputation of the machine are very good. All the partners of our company are stable and long-term cooperation. So our company is going to look for a strong partner in each country to develop the whole market together.
At present, our company mainly sells to Brazil, Dominican Republic, the United States, Indonesia, Africa, Russia and other countries and regions, there is a large blank market to develop, sincerely looking for strong agents to cooperate with.
Q:Where is your company address?
A:Economic Development Zone, HangZhou City, ZheJiang Province, China
Q:Are you a manufacturer?
A:We are the source manufacturer, have the patent technology of the product, belong to the inventor manufacturer.
Q:What are your advantages?
A:Our company has its own patent, the quality of the machine produced in China belongs to the top. The company will upgrade the machine regularly to ensure that the machine is always in the CZPT state and ensure the workload.
Q:What do you think of competitors in the same industry?
A:It has been imitated and never surpassed
/* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1
| Rolling Body: | Roller Bearings |
|---|---|
| The Number of Rows: | Double |
| Outer Dimension: | 45-120mm |
| Material: | Brass |
| Spherical: | Aligning Bearings |
| Load Direction: | Axial Bearing |
| Customization: |
Available
| Customized Request |
|---|
Are there Specific Maintenance Practices to Ensure the Longevity of Ball Bearings?
Maintaining ball bearings is essential to ensure their longevity, reliable performance, and prevent premature failure. Proper maintenance practices can extend the lifespan of ball bearings and the equipment they are used in. Here are specific maintenance practices to consider:
- Regular Lubrication:
Implement a regular lubrication schedule using the appropriate lubricant for the application. Lubrication reduces friction, prevents wear, and helps dissipate heat. Follow manufacturer guidelines for lubricant type, quantity, and frequency.
- Clean Environment:
Keep the operating environment clean and free from contaminants. Dust, dirt, and debris can infiltrate bearings and cause damage. Use seals or shields to protect bearings from contaminants, especially in harsh environments.
- Proper Installation:
Ensure correct installation of bearings using proper tools and techniques. Improper installation can lead to misalignment, uneven load distribution, and premature wear. Follow manufacturer recommendations for installation procedures.
- Regular Inspections:
Perform routine visual inspections to check for signs of wear, damage, or contamination. Regular inspections can help identify issues early and prevent further damage. Pay attention to noise, vibration, and temperature changes.
- Temperature Monitoring:
Monitor bearing temperatures during operation using infrared thermometers or sensors. Abnormal temperature increases can indicate inadequate lubrication, misalignment, or other problems.
- Correct Handling:
Handle bearings with care to prevent damage during storage, transportation, and installation. Avoid dropping or subjecting them to impacts that can affect their internal components.
- Bearing Removal and Replacement:
Follow proper procedures when removing and replacing bearings. Use appropriate tools and techniques to avoid damage to the bearing or the surrounding components.
- Alignment Maintenance:
Maintain proper shaft and housing alignment to prevent excessive loads and wear on the bearing. Misalignment can lead to increased stress and premature failure.
- Training and Education:
Provide training to operators and maintenance personnel on proper bearing maintenance and handling practices. Educated personnel are more likely to identify issues and perform maintenance correctly.
- Documented Records:
Keep records of maintenance activities, inspections, lubrication schedules, and any issues encountered. This documentation helps track the bearing’s performance over time and informs future maintenance decisions.
By implementing these maintenance practices, you can ensure the longevity of ball bearings, minimize downtime, reduce operational costs, and maintain the reliability of the equipment they are a part of.
How do Temperature and Environmental Conditions Affect the Performance of Ball Bearings?
Temperature and environmental conditions have a significant impact on the performance and longevity of ball bearings. The operating environment can influence factors such as lubrication effectiveness, material properties, and overall bearing behavior. Here’s how temperature and environmental conditions affect ball bearing performance:
- Lubrication:
Temperature variations can affect the viscosity and flow characteristics of lubricants. Extreme temperatures can cause lubricants to become too thin or too thick, leading to inadequate lubrication and increased friction. In high-temperature environments, lubricants can degrade, reducing their effectiveness.
- Material Properties:
Temperature changes can alter the material properties of the bearing components. High temperatures can lead to thermal expansion, affecting bearing clearances and potentially causing interference between components. Extreme cold temperatures can make materials more brittle and prone to fracture.
- Clearance Changes:
Temperature fluctuations can cause changes in the internal clearance of ball bearings. For instance, at high temperatures, materials expand, leading to increased clearance. This can affect bearing performance, load distribution, and overall stability.
- Corrosion and Contamination:
Harsh environmental conditions, such as exposure to moisture, chemicals, or abrasive particles, can lead to corrosion and contamination of bearing components. Corrosion weakens the material, while contamination accelerates wear and reduces bearing life.
- Thermal Stress:
Rapid temperature changes can result in thermal stress within the bearing components. Differential expansion and contraction between the inner and outer rings can lead to stress and distortion, affecting precision and bearing integrity.
- Noise and Vibration:
Temperature-related changes in material properties and internal clearances can influence noise and vibration levels. Extreme temperatures can lead to increased noise generation and vibration, affecting the overall operation of machinery.
- Lubricant Degradation:
Environmental factors like humidity, dust, and contaminants can lead to premature lubricant degradation. Oxidation, moisture absorption, and the presence of foreign particles can compromise the lubricant’s performance and contribute to increased friction and wear.
- Seal Effectiveness:
Seals and shields that protect bearings from contaminants can be affected by temperature fluctuations. Extreme temperatures can lead to seal hardening, cracking, or deformation, compromising their effectiveness in preventing contamination.
- Choosing Appropriate Bearings:
When selecting ball bearings for specific applications, engineers must consider the expected temperature and environmental conditions. High-temperature bearings, bearings with specialized coatings, and those with enhanced sealing mechanisms may be necessary to ensure reliable performance.
Overall, understanding the impact of temperature and environmental conditions on ball bearing performance is crucial for proper bearing selection, maintenance, and ensuring optimal operation in diverse industries and applications.
What Factors should be Considered when Selecting a Ball Bearing for a Particular Application?
Selecting the right ball bearing for a specific application involves careful consideration of various factors to ensure optimal performance, longevity, and reliability. Here are the key factors that should be taken into account:
- Load Type and Magnitude:
Determine the type of load (radial, axial, or combined) and the magnitude of the load that the bearing will need to support. Choose a bearing with the appropriate load-carrying capacity to ensure reliable operation.
- Speed and Operating Conditions:
Consider the rotational speed of the application and the operating conditions, such as temperature, humidity, and exposure to contaminants. Different bearing types and materials are suited for varying speeds and environments.
- Accuracy and Precision:
For applications requiring high accuracy and precision, such as machine tool spindles or optical instruments, choose high-precision bearings that can maintain tight tolerances and minimize runout.
- Space Limitations:
If the application has limited space, choose miniature or compact ball bearings that can fit within the available dimensions without compromising performance.
- Thrust and Radial Loads:
Determine whether the application requires predominantly thrust or radial load support. Choose the appropriate type of ball bearing (thrust, radial, or angular contact) based on the primary load direction.
- Alignment and Misalignment:
If the application experiences misalignment between the shaft and housing, consider self-aligning ball bearings that can accommodate angular misalignment.
- Mounting and Installation:
Consider the ease of mounting and dismounting the bearing. Some applications may benefit from features like flanges or snap rings for secure installation.
- Lubrication and Maintenance:
Choose a bearing with appropriate lubrication options based on the application’s speed and temperature range. Consider whether seals or shields are necessary to protect the bearing from contaminants.
- Environmental Conditions:
Factor in the operating environment, including exposure to corrosive substances, chemicals, water, or dust. Choose materials and coatings that can withstand the specific environmental challenges.
- Bearing Material:
Select a bearing material that suits the application’s requirements. Common materials include stainless steel for corrosion resistance and high-carbon chrome steel for general applications.
- Bearing Arrangement:
Consider whether a single-row, double-row, or multiple bearings in a specific arrangement are needed to accommodate the loads and moments present in the application.
By carefully evaluating these factors, engineers and designers can choose the most suitable ball bearing that aligns with the specific demands of the application, ensuring optimal performance, durability, and overall operational efficiency.
editor by CX 2024-03-30