It consists of a washer-shaped raceway ring (shaft ring, seat ring) and a cylindrical roller and cage assembly. The cylindrical rollers are convex machined, so that the pressure between the rollers and the raceway surface is evenly distributed. It can withstand unidirectional axial loads.
The axial load capacity is large and the axial rigidity is also strong. This type of bearing is mainly used in oil drilling rigs, iron and steel machinery