Thrust roller bearings are used to bear axial and radial combined loads dominated by axial loads, but the radial load must not exceed 55% of the axial load. Compared with other thrust roller bearings, this kind of bearing has a lower friction coefficient, higher speed and self-aligning performance.
The rollers of the bearing are asymmetric spherical rollers, which can reduce the relative sliding between the rollers and the raceway during work, and the rollers are long, large in diameter, large in number, and high in load capacity. They are usually lubricated with oil. Grease lubrication is available at low speeds. When designing and selecting, it should be preferred;
Thrust cylindrical roller bearings and thrust tapered roller bearings are suitable for low speed applications, and the speed of thrust tapered roller bearings is slightly higher than that of thrust cylindrical roller bearings. Thrust cylindrical roller bearings are separable bearings, which can only bear one-way axial load and slight impact, and can limit the axial displacement of the shaft (or shell) in one direction, so they can be used for one-way axial positioning. But its carrying capacity is far greater than that of thrust ball bearings. When the rollers are rolling, due to the different linear speeds at both ends of the rollers, the rollers inevitably slide on the raceway of the ring. Therefore, the limit speed of this type of bearing is lower than that of thrust ball bearings, and it is usually only suitable for low-speed operation occasions.
Thrust cylindrical roller bearings of standard design use car-made metal solid cages, and cages of other types or materials can also be used according to user requirements. Thrust tapered roller bearings can only bear one-way axial load and can limit the one-way axial displacement of the bearing, so they can be used for one-way axial positioning. Compared with thrust cylindrical roller bearings, it has larger load capacity and smaller relative slip, but lower limit speed.
