Deep groove ball bearings are generally by a pair of rings, a group of cage, of a set of steel balls.Its structure is simple, easy to use, the production of the most popular, the most widely used class bearings. The types of bearings are mainly used to bear radial load, but also can withstand a certain amount in either direction axial load. When within a certain range, increase the radial bearing oil clearance, such bearings with angular contact ball bearings in nature, can also bear the larger axial load. The deep groove ball bearing is mounted on the shaft after the axial displacement of the shaft or housing can be limited to within the axial range of the bearing.Meanwhile, when the shell hole and shaft (inner ring or outer) relative tilt (not more than 8-16, determined in accordance with the clearance) can still work