Product Description

Product Parameters

Bearing type Boundary  Dimensions( mm ) Speed  Rating(ipm)  Load Rating(kn) Weight(kg)
d D B Grease lubrication Oil lubrication Dynamic Cr Static Cor
7000AC 10 26 8 22000 30000 4.55 1.97 0.019
7001AC 12 28 8 20000 26000 5.1 2.38 0.571
7002AC 15 32 9 19000 24000 5.58 2.85 0.03
7003AC 17 35 10 17000 21000 6 3.25 0.04
7004AC 20 42 12 16000 19000 9.38 5.02 0.069
7005AC 25 47 12 15000 18000 10.1 5.85 0.08
7006AC 30 55 13 13000 15000 13.2 8.3 0.116
7007AC 35 62 14 11000 13000 16 10.3 0.155
7008AC 40 68 15 9000 11000 17 11.8 0.185
7009AC 45 75 16 8000 10000 21 14.8 0.23
7571AC 50 80 16 7000 9000 22.05 16.21 0.25
7011AC 55 90 18 7000 8500 30.2 21.8 0.362
7012AC 60 95 18 6300 7500 31.65 24.22 0.385
7013AC 65 100 18 6000 7000 32 24.72 0.41
7014AC 70 110 20 5000 6700 38.5 30.5 0.575
7015AC 75 115 20 5300 6300 40.2 33.2 0.603
7016AC 80 125 22 5000 6000 47.5 39.8 0.821
7017AC 85 130 22 4500 5600 50.8 42.8 0.848
7018AC 90 140 24 4300 5300 58 49.8 1.1
7019AC 95 145 24 4000 5000 57.8 50 1.15
7571AC 100 150 24 3800 4800 64.5 56.2 1.18
7571AC 110 170 28 3400 4300 81.8 72.8 1.89
7571AC 120 180 28 3000 3800 87.5 79.2 1.99
7026AC 130 200 33 2800 3600 105 96.8 3.08
7571AC 140 210 33 2400 3200 116 108 3.17
7030AC 150 225 35 2200 3000 132 125 3.9
7032AC 160 240 38 2000 2800 145 138 4.83
7034AC 170 260 42 1900 2600 170 170 6.5
7036AC 180 280 46 1300 2400 188 198 8.51

Model Model Model Model Model Model Model Model Model Model Model Model
7000AC 7212AC 7408AC 7048ACM 7308ACM 71801C 71912C QJ212M 7201BTN 7224BM 7305BM  7408BM
7001AC 7213AC  7409AC   7309ACM 71802C  71913C QJ213M 7202BTN 7226BM  7306BM  7409BM
7002AC 7214AC  7410AC 7200ACM 7310ACM 71803C 71914C QJ214M 7203BTN 7228BM  7307BM  7410BM
7003AC 7215AC 7411AC 7201ACM 7311ACM 71804C 71915C  QJ215M 7204BTN 7230BM 7308BM  7412M
7004AC  7216AC 7412AC 7202ACM 7312ACM 71805C  71916C QJ216M 7205BTN 7232BM 7309BM  7413BM
7005AC  7217AC  7413AC 7203ACM 7313ACM 71806C 71917C QJ217M 7206BTN 7234BM 7310BM  7414BM
7006AC 7218AC 7414AC 7204ACM 7314ACM 71807C 71918C QJ218M 7207BTN 7236BM 7311BM  7416BM
7007AC 7219AC 7415AC 7205ACM 7315ACM 71808C 71919C QJ219M 7208BTN 7238BM 7312BM  7432BM
7008AC 7220AC 7416AC  7206ACM 7316ACM 71809C 71920C QJ220M 7209BTN 7240BM 7313BM   
7009AC   7221AC    7207ACM 7317ACM 71810C 71921C QJ222M 7210BTN 7244BM 7314BM   
7571AC   7222AC  7000ACM 7208ACM 7318ACM 71811C 71922C QJ224M 7211BTN 7248BM 7315BM   
7011AC 7224AC 7001ACM 7209ACm 7319AC 71812C 71924C QJ226M 7212BTN 7252 BM 7316BM   
7012AC 7226AC 7002ACM 7210ACM 7320ACM 71813C 71926C  QJ228M 7213BTN 7256BM 7317BM   
7013AC 7228AC 7003ACM 7211ACM 7321ACM 71814C 71928C QJ230M 7214BTN 7260BM 7319BM   
7014AC 7230AC  7004ACM 7212ACM 7322ACM 71815C 71930C QJ232M 7215BTN 7264BM 7320BM   
7015AC   7005ACM 7213ACM 7324ACM 71816C 71932C QJ234M 7216BTN   7322BM   
7016AC 7301AC 7006ACM 7214ACM 7326ACM 71817C 71934C QJ236M 7217BTN   7324BM   
7017AC 7302AC 7007ACM 7215ACM 7328ACM 71818C 71936C QJ240M 7218BTN   7326BM   
7018AC 7303AC  7008ACM 7216ACM 7330ACM 71819C 71938C QJ244M   7301BTN 7328BM  
7019AC 7304AC  7009ACM 7217ACM 7332ACM 71820C 71940C    7219BTN 7302BTN 7330BM  
7571AC 7305AC 7571ACM 7218ACM 7334ACM 71821C     7220BTN   7332BM  
7571AC 7306AC 7011ACM 7219ACM 7336ACM 71822C QJ1018M QJ305M 7222BTN 7304BTN 7334BM  
7571AC 7307AC 7012ACM 7220ACM 7340ACM 71824C QJ1571M QJ306M 7224BTN 7305BTN 7336BM  
7571AC 7308AC 7013ACM 7221ACM   71826C QJ1571M QJ307M 7226BTN  7306BTN 7338BM  
7026AC 7309AC 7014ACM 7222ACM   71828C QJ1571M QJ308M   7307BTN 7340BM  
7571AC 7310AC 7015ACM 7224ACM 7405ACM  71830C QJ1026M QJ309M   7308BTN 7344BM  
7030AC 7311AC 7016ACM 7226ACM 7406ACM 71832C QJ1571M QJ310M   7309BTN 7318BM  
7032AC 7312AC 7017ACM 7228ACM 7407ACM  71834C QJ1030M QJ311M 7206BM 7310BTN 7356BM  
7034AC 7313AC 7018ACM 7230ACM 7408ACM 71836C QJ1032M QJ312M 7207BM 7311BTN    
7036AC 7314AC 7019ACM 7232ACM 7409ACM 71838C QJ1034M QJ313M 7208BM 7312BTN    
  7315AC 7571ACM 7234ACM 7410ACM 71840C QJ1036M QJ314M 7209BM 7313BTN    
7200AC 7316AC 7571ACM 7236ACM 7411ACM   QJ1038M QJ315M 7210BM 7314BTN    
7201AC 7317AC 7571ACM 7238ACM 7412ACM 71901C QJ1040M QJ316M 7211BM 7315BTN    
7202AC 7318AC 7571ACM 7240ACM 7413ACM 71902C QJ1044M QJ317M 7212BM 7316BTN    
7203AC  7319AC 7026ACM 7244ACM 7414ACM 71903C QJ1048M QJ318M 7213BM 7317BTN    
7204AC 7320AC 7571ACM   7415A0M 71904C   QJ319M 7214BM 7318BTN    
7205AC  7321AC 7030ACM 7301ACM 7416ACM 71905C QJ205M QJ320M 7215BM 7319BTN    
7206AC 7322AC 7032ACM 7302ACM 7417ACM 71906C QJ206M QJ322M 7216BM 7320BTN    
7207AC 7324AC 7034ACM 7303ACM 7418ACM 71907C QJ207M QJ324M 7217BM 7322BTN    
7208AC   7036ACM 7304A0M 7420ACM 71908C QJ208M QJ326M 7218BM      
7209AC 7405AC 7038ACM 7305ACM 7432ACM 71909C QJ209M QJ328M 7219BM      
7210AC 7406AC 7040ACM 7306ACM   71910C QJ210M QJ330M 7220BM      
7211AC 7407AC 7044ACM 7307ACM    71911C QJ211M QJ336M 7222BM      

Our business:Produce and customize various bearing brands. (Packaging and logo can be customized. All copyright belongs to the customer. We promise not to disclose any information.)
We can supply a wide range of Auto bearings. The bearings are widely applicable to themost of cars in the world.

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Packaging & Shipping


Company Profile

HangZhou Haver Seiko Bearing Co.,Ltd. is a high-end Automotive bearing manufacturer from ZheJiang China. Its headquarters is located in HangZhou,ZheJiang Province.HangZhou Haver Seiko Bearing Co.,Ltd. Exports 80% of its auto parts,covering more than 40% countries in Europe,the Middle East,Southeast Asia, and South America.

As a high-end brand in the automotive bearing manufacturing industry, HangZhou Haver Seiko Bearing Co.,Ltd. has more than 20 years of experience in automotive design and manufacturing,and can meet the most stringent requirements of customers.



Q:Are you trading company or manufacturer?
–We are the company dealing in trading business and manufacturing business.

Q:What’s the MOQ?
–MOQ is 2pcs for standardized products; 300pcs for customized products. There is no MOQ for sample orders.

Q:How long is the lead time?
–The lead time for sample orders is 1-3 days, for bulk orders is generally in 3-15 days.The delivery time is generally in 2 days after payment. It’s according to the order amount.

Q:Do you offer free samples?
–If you place an order, we can return part of sample fee even all of fee to you. It also depends on the quantity of order and the type of sample. And you just need to pay freight.

Q: Could you customized for me?
–Sure,we can supply OEM service as per your drawing or samples.

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Contact Angle: 25°
Aligning: Non-Aligning Bearing
Separated: Unseparated
US$ 0/Piece
1 Piece(Min.Order)


Order Sample



Customized Request

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Currency: US$
Return&refunds: You can apply for a refund up to 30 days after receipt of the products.

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

Are there any Industry Standards or Certifications that Ball Bearings should Meet?

Yes, there are several industry standards and certifications that ball bearings should meet to ensure their quality, performance, and reliability. These standards help manufacturers, engineers, and customers assess the suitability of bearings for specific applications. Some of the key standards and certifications for ball bearings include:

  • ISO Standards:

The International Organization for Standardization (ISO) has developed a series of standards related to ball bearings. ISO 15 defines dimensions, boundary dimensions, and tolerances for radial bearings. ISO 281 specifies dynamic load ratings and calculation methods for bearings’ life calculations.

  • ABEC (Annular Bearing Engineering Committee) Ratings:

ABEC ratings are commonly used in North America to indicate the precision and performance of ball bearings. Ratings range from ABEC 1 (lowest precision) to ABEC 9 (highest precision). However, it’s important to note that ABEC ratings focus primarily on dimensional tolerances and do not encompass all aspects of bearing quality.

  • DIN Standards:

The German Institute for Standardization (Deutsches Institut für Normung, DIN) has published various standards related to ball bearings. DIN 625 covers dimensions for deep groove ball bearings, while DIN 616 provides guidelines for precision angular contact ball bearings.

  • JIS (Japanese Industrial Standards):

JIS standards are used in Japan and internationally to define the characteristics and dimensions of various products, including ball bearings. JIS B 1512 outlines the classification and dimensions of rolling bearings.

  • ASTM (American Society for Testing and Materials) Standards:

ASTM has standards that cover various aspects of bearing testing, performance, and materials. ASTM F2215, for instance, specifies the requirements for ball bearings used in surgical implants.

  • CE Marking:

CE marking indicates that a product complies with European Union health, safety, and environmental requirements. It may be required for bearings used in machinery intended to be sold within the EU market.

  • Industry-Specific Standards:

Various industries, such as aerospace, automotive, medical, and nuclear, have specific standards or certifications that bearings must meet to ensure safety, reliability, and compliance with industry-specific requirements.

  • Quality Management Systems:

Manufacturers that adhere to quality management systems, such as ISO 9001, demonstrate their commitment to consistent product quality and customer satisfaction. Certification to these systems indicates that the manufacturing process follows established protocols and best practices.

When selecting ball bearings, it’s important to consider the relevant standards and certifications that align with the application’s requirements. This ensures that the bearings meet recognized quality and performance criteria, ultimately contributing to reliable and efficient operation.

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 OEM Angular Contact Ball Bearings 7021acm 7021acm 71821c for Automobiles   bearing engineeringChina OEM Angular Contact Ball Bearings 7021acm 7021acm 71821c for Automobiles   bearing engineering
editor by CX 2024-05-07

Steel Ball Bearings

As one of the leading steel ball bearings manufacturers, suppliers, and exporters of mechanical products, We offer steel ball bearings and many other products.

Please get in touch with us for details.

Manufacturer supplier exporter of steel ball bearings.

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