The bearing is used to improve the efficiency of the machine and make the machine always running smoothly by limiting the friction between the shaft and the housing. Without bearings, big friction force between shaft and the housing would rise and quickly damage the shaft and the housing and then finally end the life of the machine in a very short time. The most important is that the bearing is designed to save the cost of shaft and the housing.
We work as a good bearing, our customer is the shaft we support, and our factory is the housing we rely on.