Main causes of NSK bearing damage and preventive measures:
1 bearing its manufacturing quality problems, such as rust, roller rotation is not flexible, clearance, adhere to exceed the standard frame deformation;
2 preparation machine for long time does not run, oil changes, NSK bearings rust and no repair. Because of excessive motor operating temperature rise, and the bearing grease is not timely supplement caused bearing even burning;
3 because different types of bearing failure caused by oil mixture;
4 bearing to replace the processing, motor end cover nested after large amount of interference or ellipticity exceed the standard cause bearing clearance is too small or not even lead to increased friction bearings running, a sharp rise in temperature and burnout;
5, because the rotor core axial misalignment of shaft or after machining precision is not enough, resulting in bearings, not in a plane caused by bearing operation " eat not fresh " temperature and burnout;
6.NSK bearing improper assembly, such as cold when installed on the shaft of uneven bearing inner ring is worn, resulting in bearing inner ring and bearing fit without interference or interference from the inner ring, run phenomenon, motor end cover uneven knock lead to end cover bearing chamber and the outer ring of the bearing outer ring with too loose run phenomenon. Bearing knowledge
7 bearing chamber is not clean or grease is not clean. For example, bearing on small rigid material frame is not completely clean, the runtime NSK bearing raceway damage caused by too high temperature burnt bearing;