SKF bearing malfunction often happened five prevention

SKF bearing showed a strong regularity in the process of its use, and the repeatability is very good. In a normal start using high quality stainless steel bearing, vibration and noise are relatively small, but there are some scattered of spectrum amplitude is small, may be due to some defects in the process of manufacturing, such as surface caused by burrs, etc. Movement after a period of time, maintain a certain level of vibration and noise, frequency spectrum is very single, only one or two times the frequency. Rarely appear more than three times the power frequency spectrum, stainless steel bearing condition is very stable, steady working period. Continue to run after the late into use, SKF bearing vibration and noise began to increase, sometimes a different sound, but with increasing of vibration for the early failure. First, non-ferrous metal element concentration exception found bearing spectral analysis, appeared a lot of non-ferrous metals and iron spectrum of sub-micron wear particles; Lubricating oil excess moisture, acid value, SKF bearing tile surface corrosion. Second, bearing abnormal spectrum analysis found that iron concentration, there are a lot of iron in iron spectrum wear submicron particles, moisture and acid value anomaly of lubricating oil, indicates that the bearing of tile back due to micro wear. Third, stainless steel bearing iron spectrum contains iron series cutting grinding grain or black oxide particles, metal surface heat tint, show that the bearing surface of the shaft neck injury. Fourth, SKF bearing iron spectrum found cutting grits, and particle composition for non-ferrous metals, show that the surface of the bearing has a hamstring strain. Fifth, bearing abnormal spectrum analysis found that iron concentration, there are a lot of iron in iron spectrum of submicron particles, water or high acid value oil paint, suggest that the needle roller bearing shaft neck surface corrosion. Now know the reason why SKF bearing fault, we mainly pay attention to these aspects, the service life of the stainless steel bearing grow naturally. When external hard material into the bearing, and the pressure between the body and the raceway, can make the surface indentation. In addition, excessive impact load can make contact surface local plastic deformation and form pits. Even when the SKF bearing static load is small, due to the vibration of the surrounding environment will also be in roll forming uniform distribution of pits. When SKF bearing seal is bad, make the dust or particulate matter into the bearings, or poor lubrication, serious abrasion or wear will cause the contact surface, and make stainless steel bearing vibration and noise increases.