What parameters should be considered when selecting bearings?

When selecting bearings, several important parameters should be considered: bearing load, bearing speed, centering requirements, allowable space, bearing installation and disassembly, tolerance level, and price. Bearings mainly play a supporting and reducing friction role in machinery, so the accuracy and noise of bearings are directly related to the use and lifespan of machinery. Specifically, there are eight main points:
(1) It's about the performance and working conditions of the bearings

(2) Types and configurations of bearings

(3) Specific dimensions of bearings

(4) Lubrication of bearings

(5) Working temperature and speed of bearings

(6) Matching of bearings

(7) Configuration of bearings

(8) Sealing installation and disassembly of bearings
The working conditions of bearings, including load direction and type, speed, lubrication method, coaxiality requirements, positioning or non positioning, installation and maintenance environment, environmental temperature, etc., select the basic type of bearings, tolerance level, and clearance;
Various types of rolling bearings have different characteristics and are suitable for different usage situations of various machinery. In general, thrust bearings and angular contact bearings are selected when bearing thrust loads; For high-speed applications, ball bearings are commonly used, and when subjected to heavy radial loads, roller bearings are chosen.
When selecting bearing types, it is also necessary to consider the convenience of bearing installation and disassembly, especially for the installation and disassembly of large and extra large bearings.
In addition, the coordination of bearings mainly considers factors such as the mechanical space and position occupied by the bearings, the magnitude, direction and nature of the load, centering performance, rigidity, speed, swimming and axial displacement, as well as installation and disassembly