It is understood that although the bearing is a small annex in the main engine, but it is like the heart of the power tools, the role is very important. The quality of bearing plays an important role in the performance of main engine products. Therefore, with the improvement of product quality, the demand for brand bearing products is more and more obvious. Because of the vast number of users to the reliability and stability of bearings have more clear requirements, as well as the mainframe industry enterprise management concept and development concept