Keep the free vibration of frame and the rolling body or ring phase impact will send this noise in the bearings rotate process. It may appear in all kinds of bearing, but its sound pressure level is not too high and the low frequency. Its characteristic is:
A. stamping cage and plastic holder can be generated.
B. either oil or grease will appear.
C. when the outer ring bearing ferris wheel bearing the bending moment is most likely to occur.
D. radial clearance large easily.
Because the cage pocket clearance and the holder and the ring gap is inevitable in bearing product to exist, thus completely eliminate cage sound is very difficult, but can reduce the assembly error, gap optimum and cage movement to improve.
Another cage special taper roller bearing sound is due to the holder and the other bearing parts leading between the rubbing surfaces caused maintain self-excited vibration and noise frame. Stamping of deep groove ball bearing retainer is thin, curved in the radial and axial in-plane stiffness is low, the overall stability is poor, will the bearings rotate at high speed due to bending deformation caused by self-excited vibration, "beep".
When the bearing under a radial load and oil Slewing drives poor performance situation, at the beginning of operation "Kacha, Kacha hear noise", which is mainly due to the rolling body left in the load zone, noise suddenly accelerated and cage collision by rolling, the sound of impact can not be avoided but with running for a period of time will disappear.
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