Roots FansIn the process of using the wear and tear of the situation, so what causes it? Meet such a situation should be how to solve it? Roots fan small editor to take you to understand.
1. Improper assembly of bearings. If the inner ring of the bearing is unevenly tapped during cold assembly, the shaft will be worn, resulting in loss of interference between the inner and outer rings of the bearing, or reduced interference and inner ring The phenomenon occurs. When the door is not uniformly tapped, the outer ring of the end bearing housing and shaft is too loose to allow the outer ring to run. Either running the inner ring or running the outer ring of a Roots fan can cause a sharp rise in bearing temperature rise. As long as the bearing is intact, the phenomenon of intermittently running the outer ring is allowed.
2. Bearing wall is not clean, or grease is not clean. For example, the bearing keeps the tiny steel material thoroughly clean, and the operation is bearing rolling to the high temperature caused by the damage.
3. Bearing replacement again. In the Roots fan motor end cover nesting, interference is very large or ellipticity exceeds the standard, resulting in bearing ball gap is too small or uneven, resulting in increased friction during bearing operation, the temperature rises sharply until combustion.
4. Due to the stator and rotor core axial misalignment or processing shaft after the lack of precision, the inner ring and outer ring of the bearing is not in a cutting surface, resulting in the bearing “eat differently”, and then the temperature rises until burning.
5. Bearing damage due to mixing different types of grease.
6. Bearing body quality problems, such as raceway corrosion, rotating inflexible, clearance is too small, cage deformation.
7, the standby machine does not run for a long time, grease deterioration, bearing rust can only be maintained and maintenance, only regular inspection and regular replacement of grease.