Damage to the rolling bearing

Source: China Bearing Network Time: 2013-11-02

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The rolling bearing is in the working process; if it shows abnormal heat, oscillation and noise, the appearance is obvious; the rolling bearing can be damaged now; the reason should be checked and analyzed in time. Common damage methods are:
1. The fatigue falls off the rolling track or the tumble surface of the rolling bearing; because the effect of accepting the alternating load causes the surface metal of the touch surface to fall off in a sheet form; and gradually expands to form a pit. If it continues to work, it will constitute an area falling off area. Because the device is not properly or the bearing housing hole and the centerline of the shaft are skewed, etc., the partial area of â€‹â€‹the bearing will be subjected to a large load and the early fatigue damage will occur.
2, cracks and cracking data defects and heat treatment is not appropriate; cooperation interference is too large; combined depiction is not appropriate; such as the support surface has grooves to induce stress concentration; will constitute the ferrule crack and crack.
3. Indentation When the external hard particles enter the bearing; and press between the rolling body and the raceway; the tumbling surface can form an indentation. In addition, the excessive impact load can also cause partial plastic deformation of the touch surface. Pit. When the bearing is stopped; even if the load is very heavy, the car is annoyed and the step is arrogant.
4, wear when the rolling bearing seal is not good; make dust or particulate matter into the bearing; or poor smooth; will lead to more severe scratches or wear on the touch surface; and increase the oscillation and noise of the bearing.
5, the current corrosion current through the bearing; a small electric spark will occur; causing the touch surface to be annealed to show small pits or black highlights. Severe conditions will present larger pits.
6, rusting water or acid, alkali, salt and other intrusive bearings or smoothing agent selection will not lead to bearing corrosion; fine bearings even if the slight corrosion will make the bearing invalid.
7, the cage damages the rolling bearing; especially the high-speed bearing; because of the lack of smoothing agent; the wearer and the roll or the ferrule touches the wear, bump, and even cause the cage crack.

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