Thrust roller bearings are generally divided into thrust cylindrical roller bearings and thrust tapered roller bearings. They are combinations of rollers, cages, collars and races. The bearing collars, races and rollers can be separated. Thrust cylindrical roller bearings can support axial heavy loads and vibration loads, but they cannot support radial loads, either have self-aligning capabilities. Thrust tapered roller bearings can withstand large axial and impact loads, and also can withstand radial loads that do not exceed 55% of the axial loads, in addition, they have self-aligning features. In general, the loading capacity of all thrust roller bearings is much greater than that of thrust ball bearings.
Both thrust cylindrical roller bearings and thrust tapered roller bearings are only suitable for applications with low rotation speeds, and the maximum speed of thrust tapered roller bearings is higher than that of thrust cylindrical roller bearings. Thrust roller bearings are separable bearings that can limit the axial displacement of the shaft (or housing) in a single direction, so they can be used for unidirectional axial positioning. When the roller is rolling, due to the different linear speeds of the two ends for the rollers, the inevitable slip of rollers often happens on the raceway of the ring. Therefore, their limit speed is lower than that of thrust ball bearings.
Standard designed thrust roller bearings use metal cages, and materials such as polymers can also be used according to user requirements. Thrust roller bearings are suitable for machinery with a low axial speed on one side, such as crane hooks, water pumps, centrifuges, jacks, low-speed reducers, etc.