NSK angular contact ball bearing noise right check and repair methods

NSK bearing is a bearing noise itself, namely bearing the inherent noise; The other is a bearing installed before the noise, has nothing to do with the noise of the bearing itself. Here we introduce how to according to the NSK bearings rolling sound check and deal with the problem. a) Inherent noise: race with all kinds of angular contact ball bearings and rolling friction NSK bearings is the inherent noise, raceway is by the elastic properties of the rolling element and raceway contact, when the angular contact ball bearing rotating roller rolling on the rolling and send out the voice of a continuous and smooth; Abnormal sound of rolling friction can be issued a 'tickle, tickle' uncomfortable metal friction abnormal sound, good lubrication, won't make such a sound. So in general is not a problem, only need to pay attention to increase noise after. b) Noise associated with NSK bearing manufacturing: here include maintain aircraft noise and tremolo, maintains a noise occurs mainly in the ball bearing and angular contact ball bearing, when bearing rotation due to the vibration of the cage with roller and cage impact makes a noise. The sound is cyclical. Tremolo ( All kinds of bearing) There is a certain frequency of sound, is due to large raceway surface waviness caused by vibration. This kind of phenomenon is the most common problems, we need more attention to. c) Noise caused by the improper use of the various both exist. NSK bearing raceway surface or when the roller surface is damaged, pit, rust, then you will have certain periodic noise and vibration. When angular contact ball bearing in operation will generate contamination noise dust intrusion. This noise is cyclical, also with vibration, its sound size is not fixed, sometimes no. Angular contact ball bearings for certain industries, has played a vital role. When there is the following NSK bearings, please do not continue to use the new bearing should be replaced immediately. Angular contact ball bearing belongs to the mechanical equipment of precision parts, angular contact ball bearing for mechanical services, preventive maintenance means, condition monitoring and a series of maintenance decision support system to achieve the optimal efficiency and maintenance workshop assets. Avoid unnecessary accident: ( 1) NSK bearing inner ring of the inner surface or outer diameter surface has obvious creep; ( 2) Bearing inner ring and outer ring, rolling element and cage have crack or gap on any one; ( 3) Bearing raceway surface, guard, with significant roller card injury; ( 4) Discoloration caused by thermal obvious; ( 5) On the raceway surface, rolling element bearing with rust and injury; ( 6) On the raceway surface, rolling element bearing has serious indentation and mark; ( 7) Bearing cage wear significantly, or rivet significant relaxation;