A unidirectional thrust ball bearing consists of a shaft ring, a bearing seat ring, and a ball and cage thrust component. The bearing is a separable structure, so installation is simple because the washer, ball, and cage components can be installed separately. Unidirectional thrust ball bearings, as their name suggests, can withstand axial loads in one direction and can fix the shaft in one direction. These types of bearings must not withstand any radial loads

The bi-directional thrust ball bearing consists of a shaft ring, two bearing seat rings, and two balls and cage thrust components. The bearings are separable, so installation is simple. Each part can be installed separately. The bearing race, ball and cage assembly are the same as one-way bearings. Bidirectional thrust ball bearings can withstand axial loads in two directions and can fix the machine shaft in both directions. These types of bearings must not withstand any radial loads