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

 

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Contact Angle: 40
Aligning: Aligning Bearing
Separated: Separated
Samples:
US$ 5/Piece
1 Piece(Min.Order)

|

Order Sample

Customization:
Available

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Customized Request

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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.

ball bearing

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.

ball bearing

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.

ball bearing

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.

China wholesaler Good Quality Gcr15 Stainless Steel SUS440 30cr13 Q Series Qjf1028m Qj222m Qj316n2m Qjf1024m Four-Point Angular Contact Ball Bearings   double row ball bearingChina wholesaler Good Quality Gcr15 Stainless Steel SUS440 30cr13 Q Series Qjf1028m Qj222m Qj316n2m Qjf1024m Four-Point Angular Contact Ball Bearings   double row ball bearing
editor by CX 2024-04-11

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