The maintenance of bearing raceway of anomalies

Race of the bearing and its control method of raceway is when bearing is running, rolling on the surface of the raceway of the rolling element and a line of continuous sound, is everything will be all attack in the bearing characteristic of the fundamental. Ordinary bearing ring raceway is combined with other sounds. The rigidity of the bearing, the greater the raceway of sound pressure level is lower. Such as radial clearance is too small, the sound pressure level and the main frequency of the raceway sound can increase sharply with the decrease of radial clearance. Bearing fatigue failure is a failure mode of appearance, mainly for the germination of fatigue crack, expansion and fracture process, under the alternating load generated by the problem of the long-term effects of the metal. 1, reason: overall low eccentric bearing precision method: choose rules precision grade bearing 2, reason: different heart way: main shaft bending or casing hole repair spindle or box 3, reason: belt tight way: make the elastic of the belt can be adjusted properly, reason: smooth bad idea: use rules of smooth information and appropriate clean 5, reason: low assembly quality idea: 6, reason: progress assembly quality bearing inner shell run laps: change bearing and wear parts: 7, axial force is too big to clean, is seal ring clearance request 0. 2 to 0. Between 3 mm, correcting impeller balancing hole diameter and checking the static equilibrium value 8, bearing damage: a change in sound bearing raceway control method are: using low noise bearing is bearing waviness is very small, that is, using carefully selected. Race often affect the mechanical noise, reduce the raceway can reduce the mechanical noise.