The mechanism of formation of deep groove ball bearing vibration and noise, and at home and abroad, there are two different approaches in terms of noise and vibration control. Bearing vibration has two main sources:

First, the bearing to external excitation caused by the natural vibration of the bearing, refer to the natural vibration of the bearing inner ring, outer ring, rolling elements and cage.

Second, forced vibration due to the deep groove ball bearings moving parts in contact with each other and cause a collision, for example due to the ideal trajectory of the ball is not rolling the ball inside and outside the channel point of contact sports are not perfect circle (roundness, waviness), the rolling surface not the ideal smooth surface (roughness) and the rolling elements and keep the forced vibration frame in motion and collision of impurities in the lubricant caused by vibration and sound are closely related, but slightly different sense, that is the origin of the sound vibration, sound vibration is transmitted to humans in the air with the feeling of hearing, so ultra-high frequency vibrations are inaudible. However, if the receiver vibration and sound receiver characteristics the same, the two received signal received is related to the whole, according to this view, the control vibration or noise control can play the same effect. And because the vibration control is simple, so both domestic and international priorities vibration control to ensure product quality. Therefore, the general bearing, it is recommended to concentrate its limited human and financial resources to do a good job of bearing vibration control. The noise should not be a separate quality standards, of course, according to foreign experience, especially for bearing products, such as computer hard drives, CD recorder drive system bearings, vibration assessment is not easy to use, can develop criteria to assess noise measurement method .