The root causes of deep groove ball bearing vibration noise

About the mechanism of the formation of deep groove ball bearing vibration noise, in vibration and noise control at home and abroad there are two different approaches. Bearing vibration has two main sources: one is the bearing caused by external incentives bearing natural vibration, refers to the bearing inner ring, outer ring, rolling body and maintain the inherent vibration. 2 it is due to the deep groove ball bearing caused by moving parts contact each other collision of forced vibration, such as due to the sphere of ball rolling body is not ideal, internal and external channel movement track is not a perfect circle (contact point Roundness, waviness) Of smooth surfaces, rolling surface is not ideal, Roughness) And rolling element and cage in the collision in the movement and the impurities in the lubricant of forced vibration, the vibration and sound has a close relationship, but slightly different in a certain sense, the voice is originated in the vibration and noise is vibration propagation in the air, give a person the sense with hearing, so the vibration of the uhf people couldn't hear. However, if the same receiver and sound receiver characteristics of vibration, the two received signals are all related, according to this view, control vibration or noise can have the same effect. And because of vibration control is simple, so both at home and abroad preferred vibration control to ensure product quality. Therefore, for general bearing, it is suggested that focus on the limited human and financial resources to improve the quality of bearing vibration control. Unfavorable to set up quality standards that noise according to the overseas to check, of course, for special bearing products, such as computer hard disk drive system, video CD drive system of the bearing, is not convenient to use vibration assessment, noise measurement standards can be set to the inspection. A: deep groove ball bearings under the rust prevention knowledge of an article: bearing pre-load have what effect