Three common bearing damage phenomena and reason

Phenomenon: a micro corrosion reason and treatment advice: there is relative motion between the bearing ring and the bearing chamber phenomenon occurred. The bearing inner hole and outside surface will have iron mold, in related position may also appear on the surface of the bearing raceway stress trace. May be too loose to cooperate or not in the best shape of bearing seat. Phenomenon of bearing to improve 2: current through the damage caused by the reasons and treatment advice: in a race or roller surface is dark brown or colored straight streaks or pitting. Possible reasons: when current flows through the bearing, the surface of the bearing parts welding phenomenon happens. Guide the current flows through the bearings, not make them or have insulation measures to prevent current flow. Three: use insulation bearing can solve the problem of this phenomenon caused by the preloading spalling reason and treatment advice: the orbit of stress mark is very obvious. The preloading is probably from excessive interference fit or conical seat forward too much. In the adjustment of single row angular contact bearings and tapered roller bearings, is possible also degree of preloading. The location of the flaking usually in the region of the heaviest load. Change cooperate or choose larger bearing clearance, according to the phenomenon of procedures to install four: elliptical compression causes of spalling and processing Suggestions: on a ring in the two rings at the ends of the radial diagonal position, has obvious pressure trace, and denier exfoliation. Usually have to make bearing box, but there is a flexible way, the spray welding bearing grinding again. If the bearing box is installed on the basis of an uneven, bearing box phenomena of roundness will be destroyed five: axial load causes the spalling and processing Suggestions: obvious effect of the stress. On one side of the ring or a double row bearing raceway skin peeling. Possible reasons: incorrect installation of the axial load, caused by the preloading, the fixed bearing stuck, or axial displacement reserve quantity shortage phenomenon six: skew causes of spalling and treatment advice: if deep groove ball bearings, bearing marks appear in the orbital diagonally opposite ends. May be skewed. For cylindrical roller bearing, flaking off from the edge of the track started to develop, this is the phenomenon caused by the improper installation of seven: flake marks caused by the reasons and treatment advice: skin peeling of the track, and the roller spacing and corresponding marks. Might be caused by improper installation and cause bearing load excessive in the stationary state. As for small marks and peeling, may be in the installation of foreign matter or mixed foreign bodies in the lubricant