The thrust cylindrical roller bearing consists of a washer shaped raceway ring (shaft ring, seat ring), a cylindrical roller and a cage assembly. Cylindrical roller is machined with convex surface, so the pressure distribution between roller and raceway surface is uniform. This type of bearing is a separate structure, which can be used to install the shaft ring, race and rolling element components separately. During installation, the axis of the shaft and the housing is not allowed to tilt. It is used at low speed, can withstand unidirectional axial load, and cannot limit the radial displacement. Large axial load capacity and strong axial rigidity.