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Descriptions and types of thrust bearings

wallpapers News 2021-08-20
Thrust bearings are divided into thrust ball bearings and thrust roller bearings.
Thrust ball bearings are divided into thrust ball bearings and thrust angular contact ball bearings. The raceway ring that matches the shaft is called a shaft ring, and the raceway ring that matches the housing is called a raceway ring, which is composed of a washer with a raceway, a ball, a cage assembly and a seat ring. Two-way bearings match the middle ring with the shaft. One-way bearings can bear one-way axial loads, and two-way bearings can bear two-way axial loads. Bearings with a spherical seat ring have self-aligning performance, which can reduce installation. The influence of errors. This type of bearing is mainly used in automobile steering mechanisms and machine tool spindles.
Thrust roller bearings are divided into thrust cylindrical roller bearings, thrust spherical roller bearings, thrust tapered roller bearings, and thrust needle roller bearings.
Thrust cylindrical roller bearings are mainly used in oil drilling rigs, iron and steel machinery.
Thrust spherical roller bearings are mainly used in hydroelectric generators, vertical motors, ship propeller shafts, tower cranes, extruders, etc.
Thrust tapered roller bearings are mainly used for this type of bearings: one-way: crane hook, oil rig swivel. The double thrust bearing direction: rolling mill rolls neck.
The plane thrust ball bearing mainly bears the axial load in the assembly, and its application is wide. Although the installation and operation of thrust bearings are relatively simple, errors often occur during actual maintenance, that is, the installation positions of the tight and loose rings of the bearing are not correct. As a result, the bearing loses its function and the journal is quickly worn out. The tightening ring is installed on the end face of the stationary part, that is, the wrong assembly. The inner ring of the tight ring and the journal are in a transitional fit. When the shaft rotates, it drives the tight ring and rubs against the end surface of the stationary part. When subjected to the axial force (Fx), the friction torque will be greater than the resistance torque of the inner diameter fit, resulting in tightness. The matching surface of the ring and the shaft is forced to rotate, which intensifies the wear of the shaft journal.


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