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How to install low noise bearings?
by：Waxing
2020-09-20
Installation and adjustment of low noise bearing can also follow the long life bearings grouping method, makes the interference fit the size is consistent, bearing clearance is relatively consistent, and hope to cooperate with interference within may take smaller values, to ensure the deformation of bearing raceway is small, and rolling body caused by noise is smaller.
Clearance on the relationship between the noise is very big, the ideal situation is when the highest temperature of bearing is in motion state, clearance value is zero.
Judgment methods of clearance is too large, stationary state made shaft axial displacement, the extent of the reciprocating is bigger, the big and heavy turbidity of a noise during operation.
If running a hate sharp whistlers, shows bearing preload is too big, preloaded, bearing a large prestressing degree should have to relax.
If the clearance is too large, can make the two bearing ring along the axial relative offset slightly: both reduced clearance, and increase the axial rigidity, bearing noise can be reduced.
Rolling element into the no-load zone will be sliding or being around move, both increased noise can also cause wear and tear, and small clearance and large axial stiffness can eliminate the phenomenon.
But cannot too small clearance, lest cause high temperature and shorten the life.
Sometimes due to host large working temperature range, or shaft with a hole the size of the discreteness is very big, can't get a setting on a proper clearance, in this case, can be used for bearing outer ring elastic constant pressure preload method.
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