China Custom Double Row Angular Contact Ball Bearing for Pneumatic Tool Bearing bearing assembly

Product Description

Angular contact ball bearings are CZPT to support radial load and axial load. As single row angular contact ball bearings can only support axial load in single direction, matched bearing mounting is often adopted to them as matched parts of bearings, preload for them is more convenient.
Retainers are made of brass, synthetic resins or others subject to individual bearing features and application conditions.


Angular contact ball bearing include:
1) Single row angular contact ball bearing
2) Matched angular contact ball bearing
3) Double row angular contact ball bearing
4) Four-point contact ball bearing


Angular contact ball bearings features :
1) Load capacities are higher than deep groove ball bearings of same dimensions;
2) Used for bearing radial-axial combined loads or pure thrust loads;
3) Low operating friction and high limiting speed.


Angular contact ball bearing


GCr15/stainless steel/carbon steel/Plastic/Ceramic

Bore size

35 mm

Outer diameter

72 mm


30.2 mm

Seal type

Open RS Z 2RS ZZ


Stamping steel/Brass/Nylon/Ceramic




Automobile, tractor, machine tool, electrical machine, 

water pump, agriculture machine, textile machine, etc.


Original brand Plastic bag+Original brand Paper box+Original brand 

Carton box+Wooden pallet;

Customer’s special requests are acceptable.


OEM service, Customization service, Customers’ Logo service;

Complete process for the production and quality assurance ensures our products can meet your 

requirement. We are committed to be responsible for each set of bearing and industrial products 

sold to our clients. Relying on strong resource network, we can supply any bearing with competitive 

price to meet each customer’ demand and guarantee each customer’s benefit.

Company Profile


In order to meet the needs of the masses of customers and improve the market competitiveness of our company,
we can provide OEM service according to our customers′ Needs. We have gained ISO9001 certificate, CE certificate,
GOST certificate and SGS certificate. Our target is to carry out the strategic investment along with the development
of market and need of new products. With our strategic, excellent products, top technology and outstanding service,
we sincerely expect cooperation with more customers and friends for a better future. Our main products include
spherical roller bearing, deep groove ball bearings, cylindrical roller bearings, spherical roller bearings, needle roller
bearings, ball bearing units, water pump bearings, automobile bearing, linear motion bearing, oil-less bearings,
bush and self-lubricating bearings, and non-standard bearings. Also, we supply bearings to our domestic peeling
machine factory and the machine exported to India, Malaysia and Russia, no any complaint from customer until now.

“zero defect, zero complaints” as the quality objective.


Q: Are you trading company or manufacturer ?

A: We are a trading company specializing in exporting bearings.

Q: How long is your delivery time?

A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the 

goods are not in stock, it is according to quantity.

Q: Do you provide samples ? is it free or extra ?

A: Yes, we could offer the sample for free charge

Q.You provide free consultation service?

Yes, before, during and after order, anytime.

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Product Name: Angular Contact Ball Bearing
Characteristic: High Precision
Advantage: Large Bearing Capacity
Holder: Copper and Iron Retainers
Quality: High Quality
Rolling Body: Roller Bearings
US$ 5/Piece
1 Piece(Min.Order)

Request Sample



Customized Request

rolling contact bearing

How do rolling contact bearings perform in high-speed or high-load applications?

Rolling contact bearings are designed to perform effectively in high-speed and high-load applications. Their specific design features and characteristics allow them to withstand the demands and challenges associated with these conditions. Here’s a detailed explanation of how rolling contact bearings perform in high-speed or high-load applications:

  • High-Speed Performance:

Rolling contact bearings are well-suited for high-speed applications due to their low friction characteristics. The rolling motion between the rolling elements and the raceways minimizes friction and heat generation, enabling smooth rotation at high speeds. The design of rolling contact bearings, including the selection of suitable materials and precision manufacturing, ensures the balance between load-carrying capacity and reduced friction at high speeds. As a result, these bearings can operate efficiently and reliably in applications such as electric motors, machine tools, turbochargers, and aerospace systems that require rapid and precise rotational motion.

  • High-Load Capacity:

Rolling contact bearings are engineered to handle high loads and distribute them effectively. The rolling elements in the bearings, such as balls or rollers, distribute the applied loads over a larger contact area, reducing stress concentrations and preventing premature failure. The materials used in rolling contact bearings, such as high-grade steels and specialized alloys, provide the necessary strength and durability to withstand heavy loads. Additionally, the design of the bearing, including the number and size of the rolling elements, the geometry of the raceways, and the cage construction, is optimized to maximize load-carrying capacity. This enables rolling contact bearings to perform reliably in high-load applications, including heavy machinery, automotive drivetrains, construction equipment, and industrial processes.

  • Lubrication for High-Speed and High-Load Conditions:

Lubrication is crucial for the performance of rolling contact bearings in high-speed or high-load applications. The lubricant helps reduce friction, dissipate heat, and prevent wear and damage to the bearing surfaces. For high-speed applications, specialized lubricants with low viscosity and high thermal stability are often used to ensure efficient lubrication and prevent excessive heat buildup. In high-load applications, lubrication plays a vital role in load distribution and reducing the risk of premature failure due to excessive stress. Proper lubrication selection and maintenance are essential to ensure optimal performance and longevity of rolling contact bearings under high-speed or high-load conditions.

  • Preload and Stiffness:

In certain high-speed or high-load applications, rolling contact bearings may be preloaded to enhance their stiffness and improve their performance. Preload is a controlled axial force applied to the bearing that eliminates internal clearances and minimizes deflection under load. By applying preload, the rolling contact bearings can maintain their dimensional stability, minimize vibration, and enhance their ability to handle high-speed or high-load conditions. Preload is commonly utilized in precision machine tools, spindle bearings, and other applications where rotational accuracy and rigidity are critical.

In summary, rolling contact bearings perform exceptionally well in high-speed or high-load applications. They are designed to minimize friction, handle heavy loads, and maintain operational integrity under demanding conditions. Through their low friction characteristics, high-load capacity, appropriate lubrication, and potential use of preload, rolling contact bearings ensure reliable and efficient operation in various industries and applications requiring high-speed or high-load capabilities.

rolling contact bearing

What are the eco-friendly or sustainable aspects of rolling contact bearing materials?

Rolling contact bearing materials can contribute to eco-friendliness and sustainability in several ways. Here’s a detailed explanation of the eco-friendly and sustainable aspects of rolling contact bearing materials:

  • Recyclability:

Many rolling contact bearing materials, such as steel and certain types of alloys, are highly recyclable. At the end of their service life, bearings can be dismantled, and the materials can be recycled or reused. Recycling bearings helps reduce the demand for raw materials, conserves energy, and minimizes waste generation. By promoting a circular economy, the recyclability of bearing materials contributes to resource conservation and waste reduction.

  • Energy Efficiency:

Rolling contact bearings play a crucial role in improving energy efficiency in various applications. By reducing friction and minimizing power losses, bearings help optimize the performance of machinery and equipment. When machines operate more efficiently, they consume less energy, leading to reduced greenhouse gas emissions and lower carbon footprints. The use of high-quality bearing materials, coatings, and lubricants further enhances energy efficiency by minimizing frictional losses.

  • Long Service Life:

Rolling contact bearings are designed to have long service lives under normal operating conditions. Their ability to withstand heavy loads, resist wear, and operate reliably contributes to extended equipment lifetimes. By reducing the frequency of bearing replacements, industries can minimize material consumption, waste generation, and environmental impact associated with manufacturing and disposal processes. The longer service life of rolling contact bearings promotes sustainability by reducing resource consumption and improving equipment lifecycle management.

  • Reduced Maintenance:

The use of high-quality rolling contact bearing materials can contribute to reduced maintenance requirements. Bearings that are resistant to wear, corrosion, and fatigue offer longer maintenance intervals, reducing the need for frequent inspections, replacements, and repairs. This not only saves time and labor but also reduces the consumption of maintenance-related resources such as lubricants and spare parts. The reduced maintenance needs of rolling contact bearings contribute to sustainable operations by optimizing resource utilization and minimizing maintenance-related waste.

  • Environmental Compliance:

Rolling contact bearing materials are subject to various environmental regulations and standards. Manufacturers strive to comply with these regulations by ensuring that their materials are free from hazardous substances or restricted substances. Compliance with regulations such as the Restriction of Hazardous Substances (RoHS) directive helps prevent the use of environmentally harmful materials, reducing the potential environmental impact during the manufacturing, use, and disposal stages of rolling contact bearings.

Overall, rolling contact bearing materials offer several eco-friendly and sustainable aspects, including recyclability, energy efficiency, long service life, reduced maintenance requirements, and compliance with environmental regulations. These aspects contribute to resource conservation, waste reduction, energy savings, and minimized environmental impact throughout the lifecycle of rolling contact bearings.

rolling contact bearing

How do rolling contact bearings contribute to reduced friction and improved efficiency in machinery?

Rolling contact bearings play a crucial role in reducing friction and improving the efficiency of machinery. They achieve this through several design features and operating characteristics. Here’s a detailed explanation of how rolling contact bearings contribute to reduced friction and improved efficiency:

  • Rolling Motion:

Unlike sliding contact bearings, which rely on sliding friction between surfaces, rolling contact bearings utilize rolling motion between the rolling elements (balls or rollers) and the raceways. This rolling motion significantly reduces friction compared to sliding friction, resulting in lower energy losses and improved efficiency. The rolling contact between the elements and the raceways minimizes surface contact and allows smooth rotation with reduced frictional resistance.

  • Lubrication:

Rolling contact bearings are typically lubricated with oils or greases to further reduce friction and wear. Lubricants form a thin film between the rolling elements and the raceways, providing a protective layer that separates the surfaces and minimizes direct metal-to-metal contact. This lubricating film reduces friction and dissipates heat generated during operation, contributing to smoother rotation and improved efficiency.

  • Reduced Sliding Friction:

As mentioned earlier, rolling contact bearings rely on rolling motion rather than sliding friction. This design characteristic reduces the occurrence of sliding friction between the bearing components, resulting in lower frictional forces and decreased energy losses. The reduced sliding friction contributes to improved efficiency and can translate into energy savings in various machinery applications.

  • Load Distribution:

Rolling contact bearings distribute loads more evenly compared to sliding contact bearings. The rolling elements in a bearing share the load and distribute it over a larger contact area, reducing localized stress and minimizing friction. This load distribution characteristic helps prevent excessive wear and prolongs the service life of the bearing. By maintaining efficient load distribution, rolling contact bearings contribute to improved efficiency and reliability in machinery.

  • High-Speed Capability:

Rolling contact bearings are well-suited for high-speed applications due to their low friction characteristics. The rolling motion and reduced sliding friction allow these bearings to rotate at higher speeds with minimal heat generation. This high-speed capability is essential for various machinery, such as electric motors, machine tools, and automotive components, where efficient power transmission and rotational precision are critical for optimal performance and efficiency.

In summary, rolling contact bearings contribute to reduced friction and improved efficiency in machinery through their rolling motion, effective lubrication, reduced sliding friction, even load distribution, and high-speed capability. These design features and operating characteristics minimize energy losses, reduce wear, and enhance the overall performance and reliability of machinery in a wide range of industries.

China Custom Double Row Angular Contact Ball Bearing for Pneumatic Tool Bearing   bearing assemblyChina Custom Double Row Angular Contact Ball Bearing for Pneumatic Tool Bearing   bearing assembly
editor by CX 2024-05-15

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