China Hot selling High Precision/High Speed Ceramic Ball Bearing 7007 Angular Contact Ball Bearing P bearing air

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

Are there specific considerations for choosing rolling contact bearings in applications with extreme operating conditions or high precision requirements?

When selecting rolling contact bearings for applications with extreme operating conditions or high precision requirements, there are specific considerations to take into account. Here’s a detailed explanation of these considerations:

  • Operating Conditions:

In applications with extreme operating conditions, such as high temperatures, high speeds, or corrosive environments, special attention must be given to the bearing’s ability to withstand these conditions. Considerations include:

  • Temperature: High-temperature applications require bearings with heat-resistant materials and lubricants designed to withstand elevated temperatures without degradation. Specialized heat treatment processes may be necessary to enhance the bearing’s ability to handle thermal expansion and avoid premature failure.
  • Speed: High-speed applications demand bearings that can operate at significantly higher rotational speeds without excessive friction, heat generation, or loss of precision. Factors such as cage design, lubrication, and material selection play a crucial role in achieving reliable performance at high speeds.
  • Corrosion and Chemical Resistance: In corrosive environments or applications exposed to chemicals, bearings with corrosion-resistant materials, such as stainless steel or ceramic, and appropriate sealing mechanisms are essential to prevent premature failure due to chemical attack or rust formation.
  • Vibration and Shock: Applications subject to high vibration or shock loads require bearings capable of withstanding these dynamic forces. Special designs, such as extra internal clearance or improved cage stability, may be necessary to ensure reliable operation under such conditions.
  • Precision Requirements:

In applications with high precision requirements, such as precision instruments, machine tools, or optical equipment, specific considerations are essential to meet the desired level of accuracy and repeatability. Some key factors include:

  • Tolerance and Dimensional Stability: Bearings used in high-precision applications must have strict dimensional tolerances and excellent dimensional stability to ensure precise positioning and alignment. This requires careful control during the manufacturing process and the use of high-quality materials.
  • Runout and Radial Clearance: Runout, which refers to the deviation from perfect circularity, and radial clearance, which affects the internal play between the rolling elements and the raceways, must be tightly controlled to achieve the desired precision. Bearings with low runout and minimal radial clearance are preferred for high-precision applications.
  • Noise and Vibration: High-precision applications often require low noise and vibration levels. Bearings with optimized designs, such as improved cage stability, precision-ground raceways, and high-quality lubrication, help minimize noise and vibrations, ensuring accurate and quiet operation.
  • Lubrication: Proper lubrication is crucial for high-precision bearings to reduce friction, minimize wear, and maintain consistent performance. Lubricants with low viscosity, high stability, and excellent temperature characteristics are typically used in precision applications.

Choosing the right rolling contact bearings for applications with extreme operating conditions or high precision requirements requires careful consideration of factors such as temperature, speed, corrosion resistance, dimensional stability, and lubrication. Consulting with bearing manufacturers or experts can provide valuable guidance in selecting the most suitable bearings to meet the specific application’s demands.

rolling contact bearing

Can you explain the key characteristics and benefits of rolling contact bearings?

Rolling contact bearings possess several key characteristics and offer numerous benefits in mechanical systems. Here’s a detailed explanation of these characteristics and benefits:

  • Key Characteristics of Rolling Contact Bearings:

The key characteristics of rolling contact bearings include:

  • Low Friction: Rolling contact bearings utilize rolling elements, such as balls or rollers, which reduce friction compared to sliding contact bearings. This characteristic minimizes energy losses, heat generation, and wear, resulting in improved efficiency and performance of the mechanical system.
  • Load Distribution: Rolling contact bearings distribute loads evenly across their contact surfaces, minimizing stress concentrations and preventing premature wear or failure. This characteristic allows mechanical systems to handle various loads and forces without compromising performance.
  • Smooth Motion: Rolling contact bearings enable smooth and controlled motion between components. The rolling elements facilitate low-friction rotation or linear movement, providing precise and reliable operation in a wide range of applications.
  • Positional Accuracy: Rolling contact bearings help maintain accurate positioning of components in mechanical systems, ensuring alignment and reducing the risk of misalignment-related issues. This characteristic is crucial in precision machinery, robotics, and other applications where positional accuracy is essential.
  • Versatility: Rolling contact bearings are available in different sizes, configurations, and materials, making them adaptable and versatile in various mechanical systems. They can accommodate different load capacities, speeds, and environmental conditions, providing flexibility in design and application.
  • Durability: Rolling contact bearings are designed to withstand the demands of various operating conditions. They are constructed with high-quality materials and undergo extensive testing to ensure durability and long service life.
  • Reduced Maintenance: Rolling contact bearings require minimal maintenance compared to other types of bearings. Proper lubrication and periodic inspection are typically sufficient to ensure their reliable operation over an extended period.
  • Benefits of Rolling Contact Bearings:

The utilization of rolling contact bearings offers several benefits in mechanical systems:

  • Efficiency: Rolling contact bearings reduce friction and energy losses, resulting in improved overall system efficiency. This benefit translates to energy savings, reduced operating costs, and increased productivity.
  • Smooth Operation: Rolling contact bearings enable smooth and controlled motion, minimizing vibration, noise, and unwanted movement. This benefit enhances the comfort, precision, and reliability of the mechanical system.
  • Extended Service Life: Rolling contact bearings, when properly selected, installed, and maintained, can provide long service life. Their ability to distribute loads and resist wear ensures reliable operation and reduces the frequency of replacements or repairs.
  • Wide Range of Applications: Rolling contact bearings are utilized in various industries and applications, including automotive, aerospace, industrial machinery, appliances, and more. Their versatility and availability in different sizes and configurations make them suitable for diverse mechanical systems.
  • Cost-Effectiveness: Rolling contact bearings offer a cost-effective solution for many applications. Their initial cost is typically lower compared to other types of bearings, and their long service life reduces maintenance and replacement expenses over time.

In summary, rolling contact bearings possess key characteristics such as low friction, load distribution, smooth motion, positional accuracy, versatility, durability, and reduced maintenance. Their benefits include improved efficiency, smooth operation, extended service life, wide application range, and cost-effectiveness. By utilizing rolling contact bearings in mechanical systems, designers and engineers can achieve reliable and efficient performance across various industries and applications.

China Hot selling High Precision/High Speed Ceramic Ball Bearing 7007 Angular Contact Ball Bearing P   bearing airChina Hot selling High Precision/High Speed Ceramic Ball Bearing 7007 Angular Contact Ball Bearing P   bearing air
editor by CX 2024-05-14

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