The emergence of the phenomenon of the bearing is the most common problem  

                          
                         
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                    FAG bearing imports noise is a bearing itself, namely, the inherent noise bearing; another is the noise to FAG import bearings installed, and has nothing to do with noise FAG bearing imports itself. We have to introduce how the bearing rolling sound check and disposal issues.
A) intrinsic noise: rolling road sound and FAG import bearings and rolling friction sound (cylindrical roller bearing) is the rolling FAG bearing imports natural voice, rolling road sound is produced by the elastic properties of the rolling body and rolling contact time, when rotating FAG imported bearings, rolling on the rolling path rolling issued a continuous and smooth voice; not normal rolling friction sound can be issued a "creak, creak" like uncomfortable metal friction abnormal sound, not sound good lubrication. It is not a problem in the general case, only the noise increased only need to pay attention to.
B) and FAG import bearings manufacturing related noise: noise here including the cage and vibrato, cage noise occurs mainly in ball bearings and tapered roller FAG import bearings, FAG bearing imports because when rotating cage vibration and the retainer and rolling body collision will sound. This sound is cyclical. Trill (all FAG bearing imports) is a certain frequency sound, is due to the vibration caused by the waviness of the raceway surface. This kind of phenomenon is the most common problem, we will need more attention to. Especially we are learning some students bearing knowledge, carefully have a look these key content, there may be some help to you.
C) using the noise caused by improper: there are for the various FAG import bearings. When the bearing raceway surface or surface of the rolling body is bruised, indentation, rust, it will produce noise and vibration have certain cycle. When the FAG import bearings with dust intrusion will produce noise in operation in the dirt. The noise is non periodic, also accompanied by vibration, the sound size is not fixed, sometimes not.