In recent years, China's aerospace industry has made significant progress. However, in the process of model development, aerospace researchers, designers, and engineering technicians have increasingly recognized the importance of aerospace bearings, such as in aircraft engines, helicopters and fixed wing aircraft, satellite flywheels, and space rocket engines. The requirements for the weight, structure, strength, and durability of bearings are also increasing, and bearings are becoming a bottleneck in the development of aerospace basic components. Aerospace bearing operating conditions: high temperature, high speed, heavy load. The working characteristics of spindle bearings: high DN value, high temperature, heavy load, high reliability. The operating environment temperature ranges from -250 ° C to 350 ° C, requiring high bearing accuracy

The main bearings used are: deep groove ball bearings, tapered roller bearings, and thrust needle roller bearings