Thrust cylindrical roller bearings are often combined into high rigidity bearings, which can bear heavy load and vibration load without any difficulty. The thrust cylindrical roller bearing is only applicable to the parts with one side axial load and low speed, and only to the parts with one side axial load and low speed, such as crane hook, instant water pump, instant centrifuge, Jack, such as crane hook, instant water pump, instant centrifuge, Jack, low-speed reducer, etc. The bearing's shaft ring, seat ring and rolling body are separated, and the speed reducer, etc. The shaft ring, seat ring and rolling element of the bearing are separated and can be installed and disassembled separately