What are the requirements for universal matching of angular contact ball bearings?

Apr 25, 2024

The universal pairing of angular contact ball bearings, that is, the process of flexibly adjusting the position and combination of bearings in a specific configuration to meet different application requirements, is crucial to the performance of the bearings and the stability of the main engine. During the matching process, it is necessary to ensure that the geometric dimensions, tolerances, clearances, preload force and other parameters of the bearings are optimally matched to improve the operating accuracy and extend the service life of the bearings. The requirements for universal matching of angular contact ball bearings and strategies to improve matching accuracy will be discussed in detail below.

Requirements for universal matching of angular contact ball bearings

1. Matching of inner diameter and outer diameter: The matching accuracy of inner diameter and outer diameter directly affects the operating stability and load-bearing capacity of the bearing. During the matching process, it should be ensured that the difference between the inner diameter and outer diameter of the bearing is within the allowable tolerance range to avoid over-tightening or over-looseness during assembly.

2. Pairing of contact angles: The contact angle of angular contact ball bearings determines their bearing capacity and operating characteristics. When pairing, ensure that angular contact ball bearings in the same bearing box have the same contact angle to ensure uniform stress during operation.

3. Matching of front and rear clearance: Matching of front and rear clearance is crucial to the preload force and operating accuracy of the bearing. During the matching process, the front and rear clearances of the bearings should be ensured to be the same to ensure that the bearings have appropriate preload and operating accuracy after installation.

In addition, factors such as bearing clearance, preload force, rigidity, and thermal expansion need to be considered during the matching process to ensure that the bearings can maintain good performance under various working conditions.

The picture above is the angular contact ball bearing 7028 BGM

Strategies to improve the matching accuracy of angular contact ball bearings

1. Accurate measurement and selection: Before pairing, various parameters of the bearing should be accurately measured, including inner diameter, outer diameter, contact angle, front and rear clearance, etc. Based on the measurement results, select appropriate bearings for pairing to ensure that all parameters are within the tolerance range.

2. Optimize processing technology: Improving bearing processing accuracy is the key to ensuring matching accuracy. By optimizing the processing technology, such as using high-precision CNC machine tools and grinding equipment, and controlling factors such as temperature and vibration during the processing, the processing accuracy of the bearing can be effectively improved.

3. Strictly control the tolerance range: During the bearing manufacturing process, the tolerance range should be strictly controlled to ensure that the geometric dimensions and performance parameters of each bearing are within the specified range. By strengthening quality inspection, unqualified bearings are eliminated in a timely manner to provide high-quality bearing products for matching.

4. Introduction of advanced matching technology: As science and technology advance, more advanced technologies are used in the bearing matching process. For example, a computer-aided pairing system can automatically calculate the best pairing plan based on the bearing's actual parameters and matching requirements to improve matching accuracy and efficiency.

5. Improve bearing structural design: Optimizing bearing structural design is also an effective way to improve matching accuracy. By improving the structural design of the bearing, such as optimizing the channel curvature, adding support structures, etc., the load-bearing capacity and operating stability of the ball bearing can be improved, and the difficulty of pairing can be reduced.

Above is the ultra-high precision angular contact ball bearing 71972CDMA P4A produced by FV.

Practical application and effect of universal pairing of angular contact ball bearings

In practical applications, the universal pairing of angular contact ball bearings can meet the needs of different hosts and equipment and improve the operating performance and stability of the equipment. For example, in the fields of CNC machine tools, industrial robots, wind power generation, and other fields, the universal pairing of angular contact ball bearings is widely used in various bearing groups, effectively improving the processing accuracy, operating speed, and reliability of the equipment.

By implementing the above strategies, the matching accuracy of angular contact ball bearings has been significantly improved, which not only improves the service life and performance stability of the bearings but also reduces the failure rate and maintenance costs of the equipment. At the same time, this also provides strong support for the development of the bearing manufacturing industry and promotes the technological progress and industrial upgrading of the industry.

In summary, the universal pairing of angular contact ball bearings is of great significance to the performance of the bearings and the stability of the host. In actual operations, it is necessary to strictly abide by the matching requirements and improve the matching accuracy through strategies such as accurate measurement, optimizing processing technology, controlling tolerance ranges, introducing advanced technology, and improving structural design. It will help improve the operating performance and stability of equipment, reduce failure rates and maintenance costs, and inject new vitality into the development of the bearing manufacturing industry.

Due to space limitations, this article briefly discusses the requirements for universal matching of angular contact ball bearings and strategies for improving matching accuracy. In practical applications, in-depth research and practice are required based on specific needs and working conditions to optimize the pairing process and improve pairing accuracy continuously. At the same time, with the continuous development of science and technology, more new technologies and new methods will be applied in the matching process of angular contact ball bearings in the future, bringing more opportunities and challenges to the development of the bearing manufacturing industry.

Please note that the above is a general discussion only, and the actual strategies and methods for improving the matching accuracy of angular contact ball bearings may vary depending on specific application scenarios, equipment requirements, and technical levels. Therefore, in actual operation, it is recommended to conduct in-depth research and practice based on specific circumstances to find the most suitable pairing solution. Please refer to the FV website for details of the angular contact ball-bearing dimension table.