Date: 2013-08-20

Bearing raceway acoustic Cause

The bearing raceways sound generation source is due to inherent vibration by the load ferrule. The raceways sound inspired a smooth and continuous noise, rolling element bearings rotating scroll through the raceway great when draw attention only when the sound pressure level or tone.
Rings and rolling bodies elastic contact a nonlinear vibration system. Will stimulate the natural vibration of the elastic characteristics when lubrication or not high machining accuracy, passed to the air becomes noise. As we all know, even the highest contemporary ultra-bearing parts of manufacturing technology and processing work surface there will always be varying degrees of tiny geometric error, so roll tiny fluctuations Road and rolling body to stimulate the natural vibration of the vibration system.
Bearing raceway noise is inevitable, however, can take high-precision machined parts work surface, the correct selection of bearings and precision using the bearing so NVH.

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