Specific causes of the burn of the rolling element of the angular contact bearing

Specific causes of the burn of the rolling element of the angular contact bearing

1. Burn of rolling element line

(1) Expression form: most of the line burns are caused by friction heat on the surface of the rolling element under the joint influence of force and grinding speed during the grinding process of bearing steel ball, and when the temperature exceeds the metal quenching or tempering temperature.

(2) Cause of failure: the steel ball distributor and the horn of the grinding plate do not match, and the goal is not smooth; The groove of the template or grinding wheel is too deep or does not match the size of the rolling element, which affects the rotation flexibility of the rolling element; Uneven grinding plate and grinding wheel working surface or inconsistent groove depth, causing steel ball slipping; The size of grinding plate and grinding wheel does not match.

(3) Solution: Adjust the fitting size of the template or grinding wheel and the rolling body to make the size of the grinding plate and grinding wheel fit well. Pay attention to whether the ball collecting cutter plate is worn or deformed, and ensure the ball collecting speed to avoid excessive grinding.