Date: 2013-08-22

According to rolling road sound processing NSK bearing failure

NSK bearing noise is a bearing itself, namely the inherent noise bearing; another is the noise generated only bearing installed, and has nothing to do with the noise bearing itself. We have to introduce according to rolling road sound check and treatment of NSK bearing problem.
A ) inherent noise: rolling road sound with a variety of NSK bearings and rolling friction sound is NSK bearing natural voice, rolling road sound is produced by the elastic properties of roller and raceway contact time, when the rotation of NSK bearing, the rolling body in the raceway rolling and making a continuous and smooth. Sound; not normal rolling friction sound can be issued a " creak, creak " like uncomfortable metal friction abnormal sound, good lubrication without a sound like this. So in general is not a problem, only the noise increased after the need to pay attention to.
B ) and NSK bearing manufacturing related noise: here include cage noise and vibrato, cage noise occurred mainly in ball bearings and NSK bearings, when the bearing rotates as the holder of the vibration and the retainer and rolling body collision will sound. This sound is cyclical. Vibrato ( bearings ) is there is a certain frequency sound, is due to the vibration waviness larger caused by raceway surface. This phenomenon is the most common problem, we will need a lot of attention can be.
C ) using the noise caused by the improper: there are various . As for NSK bearing raceway surface or surface of the rolling body is bruised, indentation, rust, it will produce noise and vibration of a certain cycle . When NSK bearings have the intrusion of dust will be generated when the dirt and noise in operation. This noise is non periodic, also accompanied by vibration, the sound size is not fixed, sometimes not.
NSK bearing for some industries, plays a crucial role in. When the NSK bearing the following situations, please do not continue to use, should replace new bearing immediately.
NSK bearing belongs to the mechanical equipment of precision parts, NSK bearings for mechanical services, preventive maintenance, condition monitoring and a series of maintenance decision support system, to realize the optimization of plant assets efficiency and maintenance work. To avoid unnecessary accidents:
( 1 ) the diameter of the inner ring or outer diameter surface of NSK bearing has the obvious creep;
( 2 ) the inner ring, outer ring, rolling body, bearing cage there any cracks or gaps;
( 3 ) bearing raceway surface, rolling body wall, a marked card injuries;
( 4 ) due to thermal discoloration caused obvious;
( 5 ) bearing raceway surface, rolling bodies have rust, injury;
( 6 ) bearing raceway surface, rolling body and playing a serious indentation marks;
( 7 ) shelf wear significantly maintain bearing, or rivet significant relaxation;  

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