Product Description

Product Description

MR series deep groove ball bearings are a type of ball bearings that are widely used in various industries. These bearings are designed with deep grooves on the inner and outer rings, allowing them to accommodate radial and axial loads in both directions. They are commonly used in applications where high speed and low friction are required.

One of the key advantages of MR series deep groove ball bearings is their versatility. They are suitable for a wide range of applications, including electric motors, automotive systems, household appliances, industrial machinery, and many others. These bearings can handle both radial and axial loads, making them ideal for applications where there is a combination of both types of loads.

Another advantage of MR series deep groove ball bearings is their high speed capability. These bearings are designed to operate at high speeds without compromising their performance. The deep grooves on the inner and outer rings help to reduce friction and heat generation, allowing the bearings to run smoothly even at high speeds.

In addition to their high speed capability, MR series deep groove ball bearings also have low friction characteristics. The design of these bearings minimizes the contact area between the balls and the inner and outer rings, reducing friction and energy loss. This results in improved efficiency and longer bearing life.

The MR series deep groove ball bearings have a wide range of sizes and designs to meet different application requirements. They are available in open, sealed, and shielded versions, allowing users to choose the most suitable option for their specific needs. The sealed and shielded versions provide additional protection against contaminants, ensuring reliable performance even in harsh environments.

In terms of market prospects, the demand for MR series deep groove ball bearings is expected to grow steadily in the coming years. The increasing adoption of automation and robotics in various industries is driving the demand for high-performance bearings that can operate at high speeds and withstand heavy loads. The versatility, high speed capability, and low friction characteristics of MR series deep groove ball bearings make them well-suited for these applications.

In conclusion, MR series deep groove ball bearings are versatile, high-speed bearings that offer low friction characteristics. They are suitable for a wide range of applications and have a promising market outlook. With their excellent performance and reliability, these bearings are an essential component in various industries.

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
MR52 2 0.0787  5 0.1968  1.5 0.0590  2.5 0.0984  0.1 0.004  181 78
MR62 2 0.0787  6 0.2362  2.5 0.0984  0.1 0.004  181 78
MR72 2 0.0787  7 0.2756  3 0.1181  0.1 0.004  181 78
MR63 3 0.1181  6 0.2362  2 0.0787  2.5 0.0984  0.1 0.004  181 78
MR83 3 0.1181  8 0.3150  3 0.1181  4 0.1575  0.1 0.004  181 78
MR93 3 0.1181  9 0.3543  3 0.1181  4 0.1969  0.1 0.004  181 78
MR74 4 0.1575  7 0.2756  2 0.0787  2.5 0.0984  0.1 0.004  181 78
MR84 4 0.1575  8 0.3150  2 0.0787  3 0.1181  0.1 0.004  181 78 0.00056 
MR85 5 0.1969  8 0.3150  2 0.0787  2.5 0.0984  0.008  0.003  181 78 0.00571 
MR95 5 0.1969  9 0.3543  2.5 0.0984  3 0.1181  0.15 0.006  332 142 0.00058 
MR104 4 0.1575  10 0.3937  3 0.1181  4 0.1575  0.15 0.006  715 265 0.00133 
MR105 5 0.1969  10 0.3937  3 0.1181  4 0.1575  0.15 0.006  460 196 0.00126 
MR106 6 0.2362  10 0.3937  2.5 0.0984  3 0.1181  0.1 0.004  460 196 0.00070 
MR115 5 0.1969  11 0.4331  4 0.1575  4 0.1575  0.15 0.006  735 284 0.00062 
MR117 7 0.2756  11 0.4331  2.5 0.0984  3 0.1181  0.1 0.004  450 206 0.00071 
MR126 6 0.2362  12 0.4724  3 0.1181  4 0.1575 0.15 0.006  774 329 0.00166 
MR128 8 0.3150  12 0.4724  2.5 0.0984  3.5 0.1378 0.1 0.004  510 255 0.00099 
MR137 7 0.2756  13 0.5118  3 0.1181  4 0.1575 0.15 0.006  715 265 0.5711 
MR148 8 0.3150  14 0.5512  3.5 0.1378  4 0.1575 0.15 0.006  715 265 0.05719 
MR166 6 0.2362  16 0.6299  6 0.2362  6 0.2362 0.15 0.006  1470 600 0.0 0571  

Packaging & Shipping

We offer OEM packaging solutions, including :

— Product labeling,
— Logo printing,
— Box design,
— Outer carton design.

We also provide various shipping options, such as:

— Express delivery,
— Air transportation,
— Land transportation,
— Sea transportation.

Our team will recommend the most suitable solution based on the client’s specific requirements.

Company Profile

ZheJiang Jieyi Bearing Co., Ltd. is a more than 10-year history of bearing trading company. We are located in the biggest bearing town in China–Yiandian Town.

Our products include: Deep Groove Ball Bearings, Spherical Roller Bearings, Tapered Roller Bearings, Cylindrical Roller Bearings, Needle Roller Bearings, Ceramic Bearings, etc. 

Jieyi Bearing has advanced quality testing and inspecting equipment, to guarantee product quality meets customers’ demand. Annually our company′s export over 10 million dollars.

To service dear customers at the fastest speed, we built a great Warehouse to stock bearings, so as to ship your required bearings fast. Inside of the bearing warehouse, there is all sourcing of bearing stock, with all kinds of bearings, over 10000 types.

Jieyi Bearing also provides OEM service, such as bearing quality, noise level, grease brand, packing method, etc. We have enough OEM experience, and have a complete OEM manual for customer reference. 

Products have been selling well in the American, French, Spanish, Austria, Italian, the U. A. E. Saudi, Pakistan, India, and Brizal markets.

With over 10 years′ experience in bearings market, Jieyi Bearing have built up good relationship with all of our customers and quality factory. We always get satisfactory feedback from our customers because of the high quality products and good OEM service. We always supply the quality, stable, economical bearings and proper technical services.

Welcome to people of various enterprises with advance!

Our Advantages

1. We are located in Yandian, the largest bearing integration center. We have a complete range of bearing quality and quality and can help you choose the most suitable bearing product.

2. We have enough OEM experience to give you free choice in product production, grease selection, packaging design, brand marking, etc.

3. Years of purchasing experience allow us to cooperate with many high-quality factories and we can quickly respond to your quotation needs.

4. Regular products are in sufficient stock and can be shipped at any time.

5. If you are inspecting a factory, we can help you conduct on-site inspections of the factory and products.


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Bearing Series: Micro Series
Clearance: C0 C1 C2 C3 C4
Material: Chrome Steel Gcr15
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steel ball bearing

What are the eco-friendly or sustainable aspects of steel ball bearing materials?

Steel ball bearing materials offer several eco-friendly and sustainable aspects that align with the growing emphasis on environmental responsibility. Here are some key eco-friendly and sustainable aspects of steel ball bearing materials:

1. Recyclability:

Steel ball bearing materials, primarily composed of steel alloys, are highly recyclable. At the end of their service life, steel bearings can be recycled and used as feedstock for the production of new steel products. The recycling process helps conserve natural resources, reduces energy consumption, and minimizes waste generation. Additionally, the recycling of steel contributes to the reduction of carbon emissions associated with steel production.

2. Longevity and Durability:

Steel ball bearings are known for their longevity and durability. They can withstand heavy loads, high speeds, and harsh operating conditions. The long service life of steel bearings reduces the need for frequent replacements, resulting in lower waste generation and resource consumption. The durability of steel bearings also translates into reduced maintenance requirements and associated environmental impacts, such as the use of lubricants or the disposal of worn-out bearings.

3. Energy Efficiency:

Steel ball bearings contribute to energy efficiency in various applications. By reducing friction and minimizing energy losses, they help improve the efficiency of rotating machinery, such as motors, generators, or industrial equipment. The use of high-quality steel alloys, advanced bearing designs, and optimized lubrication techniques further enhance energy efficiency. The overall energy savings achieved through the application of steel ball bearings contribute to reduced energy consumption and lower greenhouse gas emissions.

4. Reduced Environmental Impact:

Steel ball bearings have a relatively low environmental impact compared to alternative bearing materials. The production of steel bearings involves well-established manufacturing processes that have efficient resource utilization and lower environmental footprint. Steel alloys used in bearing manufacturing are often sourced from recycled materials or produced through processes with reduced energy intensity. Additionally, advancements in surface coatings and lubrication technologies help minimize the environmental impact by reducing friction, wear, and the need for hazardous lubricants.

5. Compatibility with Sustainable Practices:

Steel ball bearings are compatible with sustainable practices in various industries. They can be integrated into systems that prioritize energy efficiency, renewable energy utilization, and reduced emissions. Steel bearings find applications in renewable energy technologies, such as wind turbines or solar tracking systems, where their durability, efficiency, and recyclability contribute to the overall sustainability of these systems. Moreover, the long service life and reliability of steel bearings reduce the need for frequent maintenance or replacement, aligning with sustainable maintenance practices.

6. Compliance with Environmental Regulations:

Steel ball bearings comply with environmental regulations and standards. Manufacturers adhere to environmental regulations related to material sourcing, manufacturing processes, waste management, and emissions control. Compliance with these regulations ensures that the production and use of steel ball bearings meet specific environmental criteria and minimize any potential negative impact on the environment.

Overall, steel ball bearing materials offer eco-friendly and sustainable aspects due to their recyclability, longevity, energy efficiency, reduced environmental impact, compatibility with sustainable practices, and compliance with environmental regulations. These aspects make steel ball bearings a preferred choice in industries striving for environmental responsibility and sustainability.

steel ball bearing

Can you provide examples of machinery or equipment that rely on precision steel ball bearings for reliable performance?

Precision steel ball bearings are integral components in a wide range of machinery and equipment, where their reliable performance is crucial. Let’s explore some examples of machinery and equipment that heavily rely on precision steel ball bearings:

  • Machine Tools: Precision steel ball bearings are extensively used in machine tools such as lathes, milling machines, grinders, and machining centers. These bearings enable smooth and precise movement of the spindle, lead screws, and other critical components, ensuring accurate positioning and high cutting performance.
  • Robotics: Precision steel ball bearings play a vital role in robotics applications, including robotic arms, joints, and linear motion systems. They provide low-friction movement, high positional accuracy, and repeatability, allowing robots to perform precise tasks with efficiency and reliability.
  • Aerospace and Aviation: The aerospace and aviation industries rely on precision steel ball bearings in various applications, such as aircraft engines, landing gears, control systems, and instrumentation. These bearings withstand high speeds, extreme temperatures, and heavy loads, providing reliable performance in critical aerospace operations.
  • Medical Equipment: Precision steel ball bearings are found in medical equipment like surgical tools, imaging systems, laboratory equipment, and dental instruments. These bearings contribute to smooth and precise movement, enabling accurate diagnoses, surgical procedures, and laboratory analysis.
  • Automotive Industry: Numerous automotive components depend on precision steel ball bearings for reliable performance. These include wheel bearings, transmission systems, steering systems, engine components, electric motors, and suspension systems. Steel ball bearings ensure smooth operation, reduced friction, and extended service life in these critical automotive applications.
  • Industrial Machinery: Precision steel ball bearings are used in various industrial machinery, such as pumps, compressors, conveyor systems, printing presses, textile machines, and packaging equipment. These bearings enable efficient power transmission, reduce friction losses, and ensure reliable operation under demanding industrial conditions.
  • Electric Motors and Generators: Electric motors and generators rely on precision steel ball bearings to support the rotor and enable smooth rotation. Steel ball bearings in these applications minimize frictional losses, enhance efficiency, and provide long-lasting performance in both residential and industrial settings.
  • High-Speed Spindles: Precision steel ball bearings are essential components in high-speed spindles used in applications such as woodworking, metalworking, and PCB manufacturing. These bearings enable the spindles to rotate at high speeds with minimal vibration, ensuring precise cutting, drilling, and milling operations.

These are just a few examples of machinery and equipment that heavily rely on precision steel ball bearings. In general, any application that requires precise motion control, low friction, high durability, and reliable performance can benefit from the use of precision steel ball bearings.

steel ball bearing

Can you describe the load-carrying capacity and load ratings of steel ball bearings?

Load-carrying capacity and load ratings are important factors to consider when using steel ball bearings in mechanical systems. Let’s delve into these aspects in detail:

Load-Carrying Capacity:

Load-carrying capacity refers to the maximum amount of load that a bearing can support without experiencing excessive deformation or failure. Steel ball bearings are designed to handle both radial loads (perpendicular to the shaft) and axial loads (parallel to the shaft). The load-carrying capacity of steel ball bearings depends on various factors, including the size and number of balls, the quality of the steel used, and the design of the bearing.

Radial Load: Steel ball bearings can carry radial loads, which are forces acting perpendicular to the shaft. The load-carrying capacity for radial loads is influenced by factors such as the ball size, the number of balls, and the contact angle between the balls and the raceways. The distribution of the load across multiple balls and the ability of the balls to roll smoothly help in evenly distributing the load and preventing excessive stress on individual balls.

Axial Load: Steel ball bearings can also support axial loads, which are forces acting parallel to the shaft. Axial load-carrying capacity is determined by the design of the bearing, including factors such as the contact angle, ball size, and the presence of thrust-specific features like retainers or washers. Bearings specifically designed for axial loads, such as thrust ball bearings, are optimized to handle high axial loads while maintaining smooth motion.

Load Ratings:

Load ratings provide standardized values to help engineers and users select the appropriate bearing for a given application. The load ratings indicate the maximum loads that a bearing can carry under specific conditions without exceeding a certain level of deformation or fatigue life.

Dynamic Load Rating (C): The dynamic load rating represents the maximum radial load or axial load that a group of bearings can carry for a specified number of revolutions or operating hours, without premature failure due to fatigue. It is typically expressed in Newtons (N) or pounds-force (lbf). The dynamic load rating is important for applications with rotating or oscillating loads, as it helps determine the bearing’s suitability and expected service life under dynamic conditions.

Static Load Rating (Co): The static load rating indicates the maximum radial load or axial load that a bearing can withstand without permanent deformation. It is measured under stationary or non-rotating conditions and is typically higher than the dynamic load rating. The static load rating is crucial for applications with sustained or long-duration loads, where the bearing may experience prolonged stress without rotation.

Manufacturers provide load ratings for different types and sizes of steel ball bearings, enabling engineers to select the appropriate bearing based on the anticipated loads and operating conditions of the application.

In summary, the load-carrying capacity of steel ball bearings depends on their design and factors such as ball size, number of balls, and contact angles. Load ratings, including dynamic load ratings and static load ratings, provide standardized values to guide the selection of bearings based on their ability to support specific loads without premature failure or deformation.

China high quality Mr63 3X6X2.5mm Fishing Reel Bearing Steel Rulman Rodamiento Miniature Ball Bearing Mr63zz Mini Bearing   drive shaft bearingChina high quality Mr63 3X6X2.5mm Fishing Reel Bearing Steel Rulman Rodamiento Miniature Ball Bearing Mr63zz Mini Bearing   drive shaft bearing
editor by CX 2024-03-29

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.

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