China wholesaler 6703zz/2RS Size 17*23*4mm Deep Groove Ball Bearing for Motor/Automotive/Motorcycle Parts/Machinery etc bearing distributors

Product Description

Product Description


Detailed Photos


Product Parameters


No. Size Rated load Weight
Inner Diameter Out Diameter Width (B) Chamfering Dynamic Static
d D Open Type Shielded Type rsmin (r) Cr Cr Close
mm inch mm inch mm inch mm inch mm inch N N KG
6700 10 0.3937  15 0.5906  3 0.1181  4 0.1575  0.1 0.004  800 390 0.0019 
6701 12 0.4724  18 0.7087  4 0.1575  4 0.1575  0.2 0.008  910 530 0.0031 
6702 15 0.5906  21 0.8268  4 0.1575  4 0.1575  0.2 0.008  850 490 0.0036 
6703 17 0.6693  23 0.9055  4 0.1575  4 0.1575  0.2 0.008  960 610 0.0040 
6704 20 0.7874  27 1.0630  4 0.1575  4 0.1575  0.2 0.008  1030 720 0.0059 
6705 25 0.9843  32 1.2598  4 0.1575  4 0.1575  0.2 0.008  1090 830 0.0070 
6706 30 1.1811  37 1.4567  4 0.1575  4 0.1575  0.2 0.008  1170 980 0.0083 
6707 35 1.3780  44 1.7323  5 0.1969  5 0.1969  0.3 0.012  1850 1630 0.0150 
6708 40 1.5748  50 1.9685  6 0.2362  6 0.2362  0.3 0.012  2519 2234 0.5710 
6709 45 1.7717  55 2.1654  6 0.2362  6 0.2362  0.3 0.012  2577 2401 0.5710 
6710 50 1.9685  62 2.4409  6 0.2362  6 0.2362  0.3 0.012  2666 2636 0.0340 
6711 55 2.1654  68 2.6772  7 0.2756  7 0.2756  0.3 0.012  2880 3070 0. 0571  

Packaging & Shipping



We are based in ZHangZhoug, China, start from 2000,sell to Mid East(30.00%), Eastern Europe(20.00%), Domestic Market(15.00%), South Asia(10.00%), North America(10.00%), Southeast Asia(10.00%), South America(5.00%).

There are total about 11-50 people in our office.


Always a pre-production sample before mass production;
Always final Inspection before shipment;


Deep Groove Ball Bearings, Spherical Roller Bearings, Cylindrical Roller Bearings, Tapered Roller Bearings and Ceramic Bearings.

Specilizing In Thin Wall Bearing, Micro-Bearing, Miniature Bearings, Inch bearings


HangZhou CZPT Bearing Co., Ltd was founded in 2000 , has been doing deep groove bearing domestic business already for 22 years with own logo “JVB”,  so that has a good reputation in China and close coorparation factories to make sure stable quality.


Accepted Delivery Terms: FOB,CFR,CIF;
Accepted Payment Currency: USD,CNY;
Accepted Payment Type: T/T,L/C,D/P D/A,MoneyGram,Credit Card,PayPal,Western Union,Cash,Escrow;
Language Spoken: English,Chinese

More products


Specific applications of deep groove ball bearings.
Aircraft models, remote control cars, machine tools, motors, pumps, agricultural machinery, textile machinery, laser printers, instruments, measuring instruments, electronic parts, etc.



Noise Level: Z1/Z2/Z3/Z4
Aligning: Aligning Bearing
Separated: Separated
Rows Number: Single
Load Direction: Radial Bearing
Material: Bearing Steel
US$ 0.3/Piece
1 Piece(Min.Order)

Request Sample



Customized Request

ball bearing

What are the Common Signs of Wear or Damage in Ball Bearings that Indicate the Need for Replacement?

Ball bearings are subjected to wear and stress during operation, and over time, they may exhibit signs of damage or deterioration that warrant replacement. Recognizing these signs is crucial to prevent catastrophic failure and ensure safe and reliable operation. Here are the common signs of wear or damage in ball bearings:

  • Unusual Noise:

If you hear unusual grinding, clicking, or rumbling noises coming from the bearing during operation, it may indicate worn-out or damaged components. Unusual noise suggests that the bearing is no longer operating smoothly.

  • Vibration:

Excessive vibration in the machinery can be a sign of bearing wear. Vibrations can result from uneven wear, misalignment, or damaged components within the bearing.

  • Increased Temperature:

Higher operating temperatures than usual may indicate increased friction due to inadequate lubrication, wear, or other issues. Monitoring the bearing’s temperature can help identify potential problems.

  • Irregular Movement:

If you notice irregular movement, jerking, or sticking during rotation, it could be a sign that the bearing is no longer operating smoothly. This may be due to damaged rolling elements or raceways.

  • Reduced Performance:

If the machinery’s performance has decreased, it may be due to a compromised bearing. Reduced efficiency, increased energy consumption, or a decline in overall performance could be indicators of bearing wear.

  • Visible Wear or Damage:

Inspect the bearing for visible signs of wear, such as pitting, scoring, or discoloration on the rolling elements or raceways. Severe wear or damage is a clear indication that the bearing needs replacement.

  • Leakage or Contamination:

If there is evidence of lubricant leakage, contamination, or the presence of foreign particles around the bearing, it suggests that the seal or shield may be compromised, leading to potential damage.

  • Looseness or Excessive Play:

If you can feel excessive play or looseness when manually moving the bearing, it could indicate worn-out components or misalignment.

  • Reduced Lifespan:

If the bearing’s expected lifespan is significantly shorter than usual, it may be due to inadequate lubrication, excessive loads, or improper installation, leading to accelerated wear.

  • Frequent Failures:

If the bearing is consistently failing despite regular maintenance and proper use, it could indicate a chronic issue that requires addressing, such as inadequate lubrication or misalignment.

It’s important to conduct regular inspections, monitor performance, and address any signs of wear or damage promptly. Replacing worn or damaged ball bearings in a timely manner can prevent further damage to machinery, reduce downtime, and ensure safe and efficient operation.

ball bearing

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.

ball bearing

How does Lubrication Impact the Performance and Lifespan of Ball Bearings?

Lubrication plays a critical role in the performance and lifespan of ball bearings. Proper lubrication ensures smooth operation, reduces friction, minimizes wear, and prevents premature failure. Here’s how lubrication impacts ball bearings:

  • Friction Reduction:

Lubrication creates a thin film between the rolling elements (balls) and the raceways of the bearing. This film reduces friction by separating the surfaces and preventing direct metal-to-metal contact. Reduced friction results in lower energy consumption, heat generation, and wear.

  • Wear Prevention:

Lubricants create a protective barrier that prevents wear and damage to the bearing’s components. Without proper lubrication, the repeated rolling and sliding of the balls against the raceways would lead to accelerated wear, surface pitting, and eventual failure.

  • Heat Dissipation:

Lubricants help dissipate heat generated during operation. The rolling elements and raceways can generate heat due to friction. Adequate lubrication carries away this heat, preventing overheating and maintaining stable operating temperatures.

  • Corrosion Resistance:

Lubrication prevents moisture and contaminants from coming into direct contact with the bearing’s surfaces. This helps protect the bearing against corrosion, rust, and the formation of debris that can compromise its performance and longevity.

  • Noise Reduction:

Lubricated ball bearings operate quietly because the lubricant cushions and dampens vibrations caused by the rolling motion. This noise reduction is crucial in applications where noise levels need to be minimized.

  • Seal Protection:

Lubricants help maintain the effectiveness of seals or shields that protect the bearing from contaminants. They create a barrier that prevents particles from entering the bearing and causing damage.

  • Improved Efficiency:

Properly lubricated ball bearings operate with reduced friction, leading to improved overall efficiency. This is especially important in applications where energy efficiency is a priority.

  • Lifespan Extension:

Effective lubrication significantly extends the lifespan of ball bearings. Bearings that are properly lubricated experience less wear, reduced fatigue, and a lower likelihood of premature failure.

  • Selection of Lubricant:

Choosing the right lubricant is essential. Factors such as speed, temperature, load, and environmental conditions influence the choice of lubricant type and viscosity. Some common lubricant options include grease and oil-based lubricants.

  • Regular Maintenance:

Regular lubrication maintenance is crucial to ensure optimal bearing performance. Bearings should be inspected and relubricated according to manufacturer recommendations and based on the application’s operating conditions.

In summary, proper lubrication is essential for the optimal performance, longevity, and reliability of ball bearings. It reduces friction, prevents wear, dissipates heat, protects against corrosion, and contributes to smooth and efficient operation in various industrial and mechanical applications.

China wholesaler 6703zz/2RS Size 17*23*4mm Deep Groove Ball Bearing for Motor/Automotive/Motorcycle Parts/Machinery etc   bearing distributorsChina wholesaler 6703zz/2RS Size 17*23*4mm Deep Groove Ball Bearing for Motor/Automotive/Motorcycle Parts/Machinery etc   bearing distributors
editor by CX 2023-11-18

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