Date: 2020-01-26

Wear part

Under the influence of loads in the contact areas of the rolling surface of the rollers and raceways of the rings, changes in the microstructure occur and at a certain depth under the working surface, microcracks occur. As a rule, these microcracks develop in the direction of the contact surface, forming first a point staining, and then a more intense staining. Fatigue wear is caused by the following reasons: external loads on the rolling surface; deformation of the rolling surfaces that increases local contact stresses; internal defects in bearing parts; reducing the hardness of parts when the temperature increases from external heat sources; corrosion of the working surfaces of parts.

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