The limit of the machine tool spindle bearing operation of the common failures occurred

Most of the damage reasons of machine tool spindle bearing many, like than previously forecast of load, the effective sealing, tight is too small, as a result of the common bearing clearance, and so on. There is in any of these factors factors the extraordinary damage type and leaves the extraordinary damage part. Examine damaged shaft bearing, therefore, in most cases can invent its about the result. General speaking, a third of the machine tool spindle bearing damage resulting from the fatigue damage, a third of the other resulting from poor lubrication, a third of the other resulting from pollutants enter the bearing or punish improper installation processing. However, these also related to property don't damage types. Parables, pulp and paper fortune most half was due to bad lubrication of machine tool spindle bearing damage or contamination rather than due to material fatigue. 1, tile surface corrosion: spectrum analysis found that non-ferrous metal element concentration anomaly; Iron spectrum appeared a lot of non-ferrous metal components in sub-micron wear particles; Lubricating oil excess moisture, acid value exceeds bid. 2, a shaft neck surface strain: iron spectrum have iron series cutting grinding grain or black oxide particles, metal surface heat tint. 3, shaft neck surface corrosion: spectrum analysis found that iron concentration is unusual, there are a lot of iron in iron spectrum of submicron particles, water or high acid value oil paint. 4, surface strain: iron spectrum found cutting abrasive, abrasive ingredients for non-ferrous metal. 5, tile back micro wear: spectrum analysis found that iron concentration is unusual, there are a lot of iron in iron spectrum wear submicron particles, lubricating oil moisture and acid value anomalies. Under the condition of fluid lubrication, sliding surface is lubricating oil without direct contact, also can greatly reduce the friction loss and wear of surface oil film can also has a certain vibration absorbing