Standard Angular Contact Ball Bearing

Characteristics and Advantages of QIBR Double-row Standard Angular Contact Ball Bearings 

QIBR double-row angular contact ball bearings have many significant characteristics and advantages and solve key problems in various fields, mainly reflected in the following aspects: 

The design of double-row angular contact ball bearings allows them to withstand large radial loads and axial loads in two directions. This design enables the bearing to limit the bidirectional axial displacement of the shaft or housing. The contact angle is usually 30 degrees, thereby providing high rigidity and being able to withstand overturning moments. 

2. Operational stability of QIBR double-row standard angular contact ball bearings 

The friction coefficient of double-row angular contact ball bearings is relatively low, which helps reduce energy loss, improve mechanical efficiency, and at the same time reduce the heat generated during operation and extend the service life of the bearing. The high precision and high stability of this kind of bearing make it especially suitable for high-precision equipment to ensure the stability of equipment operation. 

3. The strong load-carrying capacity of QIBR double-row standard angular contact ball bearings

Double-row angular contact ball bearings can simultaneously withstand radial and bidirectional axial loads and are suitable for applications with heavy loads and impact loads. Its design allows the force point of the rolling element to form a certain angle with the vertical line of the axial direction, thereby enhancing the load-carrying capacity. Double-row angular contact ball bearings can withstand large radial loads and axial loads at the same time. 

4. High limit speed of QIBR double-row standard angular contact ball bearings

Under the same size, the limit speed of double-row angular contact ball bearings is usually higher than that of deep groove ball bearings and is suitable for high-speed rotating equipment. In addition, compared with two single-row bearings, the double-row design occupies less space and is more suitable for application environments with limited space.

5. QIBR double-row standard angular contact ball bearings effectively control noise 

Double-row standard angular contact ball bearings have also made significant progress in noise control. High-precision QIBR double-row standard angular contact ball bearings can effectively reduce operating noise and improve the overall performance of equipment through precise installation, appropriate lubrication and advanced monitoring systems. 

6. QIBR double-row standard angular contact ball bearings have high cost-effectiveness 

The design of double-row standard angular contact ball bearings allows it to provide efficient load support in a relatively small space. Compared with the combination of multiple single-row bearings, using a double-row structure design can reduce costs while improving rigidity and stability. 

In conclusion, double-row standard angular contact ball bearings solve various problems in high-speed and high-load applications through their superior load-carrying capacity, motion stability, noise control and cost-effectiveness.

Performance Improvement and Solutions for QIBR Double-row Standard Angular Contact Ball Bearings 

1. Effectively improve material performance

For double-row standard angular contact ball bearings, high-quality steel is selected to manufacture inner and outer rings and balls. Through processes such as vacuum heat treatment, the surface hardness and material properties are improved, thereby enhancing the bearing's load-carrying capacity and service life. 

2. Optimize internal structure design

Through means such as finite element analysis, the structural parameters of double-row standard angular contact ball bearings, such as contact angle, curvature radius of inner and outer rings, etc., are optimized to improve the axial stiffness and load-carrying capacity of the bearing. 

3. Improve manufacturing accuracy 

Adopt advanced foreign processing equipment and techniques, such as precision grinding and super finishing grinding, to improve the geometric accuracy of inner and outer rings and balls, reduce processing errors, and thereby improve the rotational accuracy and operational stability of the bearing. It can also ensure the protrusion and roughness of the bearing. 

4. Improve lubrication performance

Select excellent-performance grease, such as aviation grease, and adopt sealing measures, such as double-sided contact seals, to reduce the loss of grease, improve the lubrication performance of double-row standard angular contact ball bearings, and reduce friction and wear. 

5. Optimize preload design

By optimizing the magnitude and method of preload, such as using elastic washers for preloading, changes in radial clearance caused by changes in shaft length after heating and temperature differences between inner and outer rings will not affect the preload deformation amount. At the same time, internal stress is reduced and service life is extended. 

6. Multi-objective optimization design

Optimize the internal non-standardized structural size of angular contact ball bearings, which can significantly improve their working performance. This design method can improve the basic rated dynamic load and static load by adjusting internal parameters while ensuring that the standard values of inner diameter, outer diameter, and width remain unchanged. 

7. Selection of contact angle 

The contact angle of angular contact ball bearings (usually 15, 25, and 40 degrees) directly affects its load-carrying capacity and speed performance. The larger the contact angle, the stronger the axial load-carrying capacity, but at the same time, the speed will be reduced. Therefore, designers will select the appropriate contact angle according to specific application needs to optimize the performance of the bearing. In conclusion, by optimizing materials, contact angles, internal structure, manufacturing processes, lubrication, and preload design and other measures, the performance of double-row standard angular contact ball bearings can be significantly improved to meet increasingly demanding application requirements.

Main application fields of QIBR double-row standard angular contact ball bearings 

Double-row standard angular contact ball bearings are widely used in multiple fields, mainly including the following aspects: 

• Industrial machinery: Double-row angular contact ball bearings are often used in equipment such as oil pumps, Roots blowers, and air compressors. Because they can simultaneously withstand radial and bidirectional axial loads, they provide high rigidity and load-carrying capacity. 
• Automotive industry: In the front wheel hubs of cars, double-row angular contact ball bearings are widely used and can effectively limit the bidirectional axial displacement of shafts and housings. They are suitable for application occasions with high rigidity requirements. 
• Machine tools and precision equipment: Due to their high speed and low noise characteristics, double-row angular contact ball bearings are also applied in high-precision rotating equipment such as machine tool spindles. 
• Aviation and other high-demand fields: In high-demand industrial applications such as aviation, double-row angular contact ball bearings are widely adopted due to their superior performance to ensure the stability and reliability of equipment. 

Double-row standard angular contact ball bearings have become an indispensable important component in many industries due to their superior load-carrying capacity and adaptability.