Deep groove ball bearing vibration and noise
the vibration and noise of SXA will be divided into Z1Z2Z3Z4 according to vibration value of acceleration level ( dB )
It could be divided into V1V2V3 and V4 according to Velocity vibration value ( um / s )
Please remark on the order if clients have requirement on vibration and noise
General class bearings are generally produced by Z2 grade if they have no remark