Low-noise bearing applications – manufacturing-induced noise and its countermeasures

Although this noise is essentially a result from manufacturing errors, but in fact still with the choice of lubricant, bearing installation conditions, the accuracy of shaft and bearing on the state. This noise is further divided into cage sound of two types of sound and vibration pattern, as described below:

(1) sound and control cage

cage sound is intense vibration of the cage and rolling elements have been issued for the impact of periodic vibration and noise, the hole in the pocket loose and prone to large friction.

This noise occurs mainly in ball bearings and tapered roller bearings, and stamping cage and solid cage occurs, the use of grease or oil lubrication lubrication occurs, but in poor lubrication or lubricant dried up, the large radial clearance, the outer ring under a moment load, and poor cage structure and accuracy is not high, the more likely, the web or cage severe rivet head will suddenly break.

cage noise and vibration control methods are; good lubricant to use lubrication; reduce the bearing installation error; compressed radial bearing axial clearance or preload to be appropriate, and use well-structured with reasonable accuracy cage bearings, or switch to cage firmly and without the wear and tear of bearings.

(2) sound and vibration pattern control method

chatter sound is directly related to the bearing surface waviness on rolling noise, which is a pure tone noise, the constant speed, its frequency is also constant, and for changes in speed, it also will be the frequency of change.

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