Analyze import IKO needle roller bearing common failure forms of the five reasons

When the needle roller bearing failure, whether want to know what reason be cause? Here and everyone together to analyze the five major cause of the IKO bearing 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 exceeds bid, which indicates that 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, 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, bearing iron spectrum found cutting grits, and particle composition for non-ferrous metals, show that the surface of the bearing has a 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. Know the cause of bearing fault, now that we mainly pay attention to these aspects, the service life of the bearing of naturally. When external hard particle material into IKO bearings, 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 bearing static load is small, due to the vibration of the surrounding environment will also be in roll forming uniform distribution of pits. When the bearing seal is bad, make the dust or particulate matter into the bearings, or poor lubrication, serious will cause the contact surface scratch or wear and tear, and increased imports of bearing vibration and noise. Bearing, especially high-speed bearing, due to the lack of lubricant, making maintains contact with the body or ring wear, impact, and even lead to maintain the frame fracture. In IKO bearing raceway or body surface, as a result of the action of alternating load under the contact surface of a metal flake peeling, and gradually expand to form pits. If continue to operate, it will form the area of spalling. Due to improper installation or bearing hole and shaft centerline tilt reason will lead to import bearings in local area under high load and appear the early fatigue damage.