The bearings removed during regular maintenance, operation inspection, and replacement of peripheral parts of the equipment are inspected to determine whether they can be reused or whether their condition is good or bad. Carefully investigate and record the removed bearings and their appearance. In order to determine and investigate the remaining amount of lubricant, after sampling, the bearings should be cleaned thoroughly. Next, check the condition of the raceway surface, rolling surface, and mating surface, as well as the wear status of the cage for any damage or abnormalities.

As the core components of automobiles, the accuracy, performance, lifespan, and reliability of automotive bearings are becoming increasingly important. At present, the domestic automotive industry has achieved rapid development, and in the future, the automotive bearing industry will usher in a new round of technological transformation.

Since the 1990s, with the continuous advancement of production technology in China, Chinese bearing enterprises have begun to compete head-on with Japanese companies in the field of micro and small bearings, gradually occupying the middle and low-end markets as well as some high-end markets of micro and small bearings.

In recent years, the overall production scale of the domestic bearing industry has been continuously increasing and expanding, and the number of bearing enterprises has sharply increased. Nearly half of the nearly 2000 companies belong to large enterprises.