Graphite machine spindle bearing failure reason and maintenance skills

Graphite machine spindle bearing failure reason and maintenance skills - 2019 04 - 25 graphite machine due to long time work bearing temperature: when institutions, installation of bearing parts allowed to have a certain temperature, when the hand touch body shell, should not feel hot as normal, table bearing failed conversely. So stop the machine and processing is the key, so maintenance skills what? 1. Long work bearing temperature: when institutions, installation of bearing parts allowed to have a certain temperature, when the hand touch body shell, should not feel hot as normal, conversely indicates that bearing temperature is too high. Cause bearing temperature is too high, too much load lubricating oil quality does not conform to the requirements or metamorphism, lubricating oil viscosity is too high; Rolling bearing cage or institutions such as assembly tight body rupture ( Inadequate clearance) ； Bearing assembly too tight; Bearing race in internal rotation shaft or housing. 2. Bearing noise: graphite machine rolling bearing in the work to allow running noise slightly, if you have any abnormal noise or excessive noise or sound, suggests that the bearing failure. 3. Maintains a cataclastic: insufficient lubrication seat skew, etc. , and roller broken. 4. Metal raceway surface spalling: graphite bearing roller and the inner and outer ring raceway surface under the role of the periodic pulse load, resulting in a periodic change of contact stress. When stress cycles after reaching a certain value, the rolling element bearings, their work within or surface produce fatigue spalling. If the load bearing assembly exacerbated the fatigue. In addition, the bearing installation is not straight, shaft bending, also can produce roll flaking off. Bearing raceway fatigue spalling can reduce the running accuracy of shaft vibration and noise in the organization. 5. Bearing race crack: graphite bearing race causes of cracks may be bearing fit tight, loose bearing outer ring and inner ring, bearing deformation, inclusive of installation of bearing surface processing etc. 6. Bearing burn: burn bearing the heat tint of raceway and rolling body. Burns is usually the cause of insufficient lubrication, lubricating oil quality does not conform to the requirements or metamorphism, and bearing assembly too tight. 7. Seat ring raceway serious wear and tear, may is a circle into foreign body, lack of lubricating oil or lubricant brand is not appropriate.