Thrust roller bearings are used to bear axial and radial combined loads mainly under axial load, but the radial load shall not exceed 55% of the axial load. Compared with other thrust roller bearings, this kind of bearing has lower friction coefficient, higher speed and self-aligning performance.
The rollers of the 29000 type bearings are asymmetrical 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, and are usually lubricated with oil. Grease lubrication can be used for individual low-speed situations. When designing and selecting, it should be preferred;
80000 type thrust cylindrical roller bearings, 90000 type thrust tapered roller bearings and AXK type thrust needle roller bearings can bear unidirectional axial load, which is much larger than the axial load capacity of thrust ball bearings, and has high rigidity and Occupies little axial space.
Thrust cylindrical roller bearings are mainly used in heavy machine tools, high-power marine gearboxes, oil drilling rigs, vertical motors and other machinery.
Assembly method of thrust roller bearings: Because thrust roller bearings are high-precision products, improper assembly can easily cause damage to the thrust roller bearing groove, resulting in damage to the thrust roller bearing. Thrust roller bearings should have special molds during assembly, and they cannot be knocked at will. When pressing into the shaft, only small rings can bear force, and when pressing large rings, only large rings can be stressed. Air pressure or hydraulic pressure is required for assembly. The upper and lower molds should be outside the horizontal state during press assembly. If there is any inclination, the channel of the thrust roller bearing will be damaged due to force, which will cause the thrust roller bearing to generate noise.