Roots FansIn the process of using the bearings have problems, so what are the causes of bearing problems? Roots fan editorial take you to understand.
1, Roots blower bearing assembly is not appropriate, such as cold installation is not uniform knock bearing inner ring so that the shaft is subjected to wear, resulting in the bearing inner ring and outer ring with the loss of interference or interference becomes small, the phenomenon of running the inner ring, installed motor end cover is not uniform knock, resulting in the end of the cover bearing room and the shaft with the outer ring with the outer ring is too loose to appear to run the phenomenon of the outer ring. Whether to run the inner ring or run the outer ring will cause the bearing operation temperature rise sharply, as long as the bearing is intact, allowing intermittent run the outer ring phenomenon exists.
2, bearing bearing wall is not clean, or add grease is not clean. For example, bearings to keep tiny steel material for thorough cleaning, running is bearing roll to damage caused by high temperature rise burned bearings.
3, bearing re-exchange processing, motor end cover nesting after the excess surplus or oval degree exceeds the standard caused by bearing ball clearance is too small or uneven resulting in bearing operation friction increases, the temperature rises sharply until burned.
4, due to the stator, rotor core axial misalignment or re-axis machining accuracy is not enough, resulting in the bearing inner and outer ring is not in a cut surface caused by the bearing operation “to eat other strength” after the temperature rises until burned.
5. Bearing damage due to mixing of different types of grease.
6, the bearing itself has quality problems, such as raceway rust spots, rotation inflexibility, clearance is too small, keep frame deformation.
7, the spare machine does not run for a long time, grease deterioration, bearing rust and the only maintenance and maintenance can only be used to pay attention to the regular inspection and regular replacement of the same brand of grease.