Rolling bearing common malfunction
There are two kinds of fault phenomenon of rolling bearing. One is that the temperature of bearing
installation is too high, and the other is that there is noise in bearing operation.
1. The bearing temperature is too high
When the mechanism is running, the position of the bearing installation is allowed to have a certain temperature. When touching the shell of the mechanism with hand, it should be normal not to feel hot hands, otherwise, it indicates that the bearing temperature is too high.
The reasons of bearing temperature are as follows: the quality of lubricating oil does not meet the requirements or deteriorates, and the viscosity of lubricating oil is too high;Over-tight assembly of mechanism (insufficient clearance);Bearing assembly too tight;The bearing seat ring rotates on or inside the shaft;Excessive load;Bearing holder or rolling body, etc.
2. Bearing noise
The rolling bearing is allowed to operate with slight noise. If the noise is too loud or there is abnormal noise or percussion sound, it indicates that the bearing is out of order.
The reasons for the noise produced by rolling bearings are quite complex.