SKF 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 the rolling sound check and treatment of SKF bearing problem.
A ) inherent noise: rolling road sound and various angular contact ball bearings and rolling friction sound is SKF bearing natural voice, rolling road sound is produced by the elastic properties of roller and raceway contact time, when the angular contact ball bearing rotates, a continuous and smooth sound of rolling body in the raceway rolling and making; 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 SKF bearing manufacturing related noise: here include cage noise and vibrato, cage noise mainly occurred in contact ball bearing and angular ball 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 ( all kinds of bearings ) 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 SKF bearing raceway surface or surface of the rolling body is bruised, indentation, rust, it will produce noise and vibration of a certain cycle. When the angular contact ball bearings have the intrusion of dust will be generated when the dirt noise in operation. This noise is not periodic, also accompanied by vibration, the sound size is not fixed, sometimes not.
Angular contact ball bearings for some industries, plays a crucial role in. When the SKF bearing the following situations, please do not continue to use, should replace new bearing immediately.
Belongs to the mechanical equipment of precision parts of angular contact ball bearing, angular contact ball 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 SKF 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;