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/*728*90 created on 2018/5/16*/ var cpro_id = "u3440131"; Home>Bearing knowledge>Analysis of damage methods of rolling bearings Analysis of the damage of rolling bearings
The damage of the rolling bearing tumbling the imported bearing during the working process; the appearance of abnormal heating, oscillation and noise is increasing; indicating that the tumbling imported bearing can be damaged now; the reason should be checked and analyzed in time. Common damage methods are: /*250*250 was created on 2017/12/25*/ var cpro_id = 'u3171089';
1. Exhaustion is caused by rolling the raceway of the imported bearing or rolling the external surface; due to the effect of accepting the alternating load, the metal on the surface of the touch surface is flaky; and gradually expands to form a pit. If it continues to work, the area will fall off. Area. Due to improper installation or the bearing hole and the centerline of the shaft are skewed, etc., the part of the bearing will receive a large load and exhibit early fatigue damage.
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 and tear 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 is damaged by the rolling bearing; especially the high-speed bearing; due to the lack of smoothing agent; the wearer, the bumper or the ferrule touches the wearer, bumps, and even causes the cage to crack.
Bearing dust seal sealing the life of the imported bearing is largely determined by its sealing function; the imported bearing seal is now a folded-edge skeleton; it is usually pressed by hand; the primary defect is: poor elastic strength; Good; the sealing function is poor.
The imported bearing dust seal ring adopts the hook-shaped curling layout; compared with the existing skills, it has the following advantages:
The sealing function is good; the sealing strength is high; the reason is that the hook-shaped curling layout of the skeleton can increase the elasticity of the sealing ring; the maximum limit satisfies the influence of the tooth size deviation; it not only depends on the elasticity of the sealing elastic body; The elasticity and strength effect; the capping rate is improved; and the machine can be pressed; it can be pressed.
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Analysis of the damage of rolling bearings
Source: China Bearing Network Time: 2013-12-04