Product Description

Product Description

Deep groove ball bearings are the most widely used bearing type and are suitable for many different industries. Matching that versatility across many different applications, they are available in a wide range of designs, variants and sizes.

Here are examples of applications in which deep groove ball bearings might be used:

  • Electric motors and generators
  • Agriculture
  • Material handling
  • Industrial transmissions
  • Food and beverage
  • Industrial pumps
  • Industrial fans
  • Two and 3 wheelers
  • Cars and light trucks

Product Parameters

Technical specification:

Seal type
Open (without cover), metal shields (ZZ), rubber seals (2RS).
N-Snap Ring Groove,  NR-Snap Ring Groove  And Snap Ring On Outer Ring,  F-Flanged

Cage is an important parts. Usually steel cage will be used in deep groove ball bearings, but there are customers
who prefer nylon cage and bronze cage.

Here is the comparison between each standard organization:
ABEC-1, ABEC-3, ABEC-5, ABEC-7, ABEC-9, the larger the number, the higher the precision grade.


ANSI Standard* DIN 620* ISO 492*
ABEC 1 P0  Class Normal
ABEC 3 P6 Class 6
ABEC 5 P5 Class 5
ABEC 7 P4 Class 4
ABEC 9 P2 Class 2

Bearing No. Dimension Load rating (KN) Weight
d D B Dynamin Static approx.
mm mm mm Cr Cor KG
6900 61900 10 22 6 2.9 1.45 0.01
6901 61901 12 24 6 4.3 2.25 0.011
6902 61902 15 28 7 4.6 2.55 0.017
6903 61903 17 30 7 6.35 3.7 0.018
6904 61904 20 37 9 7 4.55 0.036
6905 61905 25 42 9 7.25 5 0.041
6906 61906 30 47 9 10.9 7.75 0.045
6907 61907 35 55 10 13.7 9.95 0.073
6908 61908 40 62 12 14.1 10.9 0.112
6909 61909 45 68 12 14.5 11.7 0.132
6910 61910 50 72 12 16.6 14.1 0.133
6911 61911 55 80 13 20.2 17.3 0.185
6912 61912 60 85 13 17.4 16.1 0.104
6913 61913 65 90 13 23.7 21.2 0.211
6914 61914 70 100 16 24.4 22.6 0.342
6915 61915 75 105 16 25 24 0.363
6916 61916 80 110 16 31.9 29.6 0.382
6917 61917 85 120 18 32.8 31.6 0.535
6918 61918 90 125 18 33.7 33.5 0.565
6919 61919 95 130 18 45 41.9 0.705
6920 61920 100 140 20 46.5 44.8 0.96
6921 61921 105 145 20 47.9 47.8 1
6922 61922 110 150 20 57.2 56.9 1.04
6924 61924 120 165 22 69.6 70 1.41
6926 61926 130 180 24 71.3 74.8 1.86
6928 61928 140 190 24 93.4 94.3 1.98
6930 61930 150 210 28 93.41 1.45 3.05
6932 61932 160 220 28 139 158 3.9
6934 61934 170 230 28 142 163 4.6
6936 61936 180 250 33 146 169 5.4
6938 61938 190 260 33 146 169 5.86


Packaging & Shipping


Our Advantages

1. We have over 10 years’ experience.
2. OEM or Non-Standard Bearings: Any requirement for Non-standard bearings is easily fulfilled by us due to our vast knowledge and links in the industry.
3. After Sales Service and Technical Assistance: Our company provides after-sales service and technical assistance as per the customer’s requirements and needs.
4. Quick Delivery: Our company provides just-in-time delivery with our streamlined supply chain.
5.We attend promptly to any customer questions. We believe that if our customers are satisfied then it proves our worth. Our customers are always given quick support.                              

Please contact us immediately if you have any questions.

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Aligning: Non-Aligning Bearing
Separated: Unseparated
Rows Number: Single


Customized Request

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Shipping Cost:

Estimated freight per unit.

about shipping cost and estimated delivery time.
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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

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.

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

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.

China Good quality 91003-PVG-005 Ball Bearing (31X93X20.5) B31-26N 31X93X21   with Good qualityChina Good quality 91003-PVG-005 Ball Bearing (31X93X20.5) B31-26N 31X93X21   with Good quality
editor by CX 2024-04-23