One of the causes of bearing burns is due to poor lubrication of self-aligning ball bearings. It may be that an irregular lubricant is used, or that there is too much or too little lubricant.
The second reason for bearing burns is the excessive load of the bearing; the rotational speed of the bearing is too high; the clearance of the bearing is too small; there is water or other foreign matter intrusion. The reasons for bearing burns are the poor accuracy of the three shafts, the bearing housing, and the large deflection of the shaft.
The third reason for bearing burns is the poor accuracy of the shaft and the bearing housing, the large deflection of the shaft.
The three major reasons for bearing burns will lead to the state of bearing burns. The raceway wheel, rolling element and cage of the bearing will heat up rapidly during rotation until discoloration, softening, welding and damage.
It is recommended that when using the bearing, attention should be paid to the bearing installation, lubrication, clearance, so as to reduce the bearing burn and prolong the service life of the bearing.