Bearings are one of the most widely used parts in modern industry, as long as the products and equipment related to the transmission device must use bearings. The overall level of the bearing industry has made great progress in the next few years. However, the later maintenance of bearings is very troublesome, so later there was the emergence of maintenance-free bearings .

The technical principle of maintenance-free bearings is to optimize the geometry and surface finish of the bearing raceway, redesign the retainer, combine the use of high-performance bearing steel with a unique heat treatment process, and improve the accuracy of steel balls. The consumption of grease is reduced; the optimized sealing structure makes it easier to store grease and the precipitation of lubricating oil to the channel. With the filling of the full-life grease, it provides longer-lasting lubrication for rotation. The improvement and application of several processes have achieved a huge improvement in bearing performance, eliminating the need for regular maintenance during the bearing life cycle.

The development of bearings is getting better and better, and the development of universal joint cross is also increasing day by day. The development of the bearing industry is obvious to all.