Bearing raceway sound maintenance anomaly - bearing knowledge

Bearing raceway groove sound sound and its control method is when bearing is running, rolling on the surface of the raceway of the rolling element and a line of continuous sound, is unique to occur in all bearing the basic sound. General 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 surface form of fatigue failure is a failure, mainly for fatigue crack initiation, expansion and fracture process, under alternating load generated by the fault of the long-term effects of the metal. 1, reason: low overall eccentric bearing precision method: choose regulation accuracy grade bearing 2, reason: different method of heart: main shaft bending or casing hole repair spindle or box 3, reason: belt too tight method: make the elastic of the belt can be adjusted properly, reason: poor lubrication methods: use prescribed brand of lubricating materials and proper cleaning, reason: low assembly quality methods: improve the quality of assembly, reason: bearing inner shell run laps method: replacement of bearings and related worn parts 7, method of axial force is too big: cleaning, adjustment sealing ring clearance requirement 0. 2 to 0. 3 mm, correcting impeller balance hole diameter and calibration method of static equilibrium value 8, bearing damage: replace sound bearing raceway control methods are: using low noise bearing is bearing waviness is very small, that is, carefully select and use conditions. Race often affect the mechanical noise, reduce the raceway can reduce the mechanical noise.