Motor bearing noise is broken?

The noise performance of motor bearing during operation has always been a factor of concern to motor users and engineers. In fact, the source of noise is vibration. Everyday sounds we hear are nothing more than vibrations in a certain frequency range, transmitted through the air to the part of the eardrum that is perceived by hearing. Therefore, the quantitative analysis method of noise is essentially the same as that of vibration. Bearing noise is broken? How to distinguish the normal noise and abnormal noise of bearings?

Bearing noise is divided into normal noise and abnormal noise, for the noise due to the inherent physical characteristics of the bearing itself, these noises cannot be avoided, and its existence does not mean that there are some faults in the bearing. However, for the bearing noise that is not consistent with this, the appearance of these abnormal noises is the reaction that some bearing anomalies already exist, and it can be used to screen the bearing state.

The normal noise of the bearing is related to the physical characteristics of the bearing, when the bearing is allowed to rotate, the friction and collision between the various parts of the bearing should be uniform and stable, so it will also emit uniform and stable bearing noise. Generally speaking, the physical rigidity of the bearing equipment determines that its normal collision sound is relatively peaceful, not sharp, dry friction noise. From the above, it can be known that the normal noise of the bearing should be: uniform, stable, and no abnormal frequency. Inconsistent bearing noise may indicate the existence of some problems.