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FAG spherical roller bearing damage prevention maintenance maintenance method - bearing knowledge

by:Waxing     2020-05-27
1 cut heart roller bearings, bearings cleaning remove repair, first recorded appearance FAG bearing, confirm the residual stock of lubricant, sampling inspection with lubricant, bearing. Common use gasoline, kerosene as a cleaning agent. Tear open come down to the bearing cleaning, coarse and fine fine cleaning cleaning, respectively in the container, put a metal mesh bottom first, FAG bearings from direct contact with dirt from the container. Coarse when cleaning, if to spin bearing with dirt, can damage the bearing rolling surface, should be pay attention to. In coarse clean oil, use a brush to remove grease, adhesive, after clean, roughly into fine cleaning). Fine cleaning, spherical roller bearing in the cleaning of oil side spin, side carefully cleaned. In addition, the clean oil is always kept clean. 2, bearing inspection and judgment to determine whether removed self-aligning roller bearing can be used again, check after bearing clean, carefully check the raceway surface, rolling surface, cooperate with the state, the abrasion of cage, FAG bearing clearance increases, and presence of dimensional precision, abnormal falling damage. Not separated type ball bearing, the inner ring with one hand support levels, rotate the outer ring confirm whether smooth. Separation of spherical roller bearings and bearing, rolling body, the outer ring raceway surface can be respectively. Because of large bearing not rotate with the hand, pay attention to check the rolling element and raceway and the appearance, such as, cage, guard FAG bearing the importance of high must check carefully. Whether can be used to determine, is considering bearing damage degree, mechanical properties, importance, and operating conditions, to the next overhaul period. However, if you have the following defects can't use, must be replaced new spherical roller bearings: ( a) Inner ring and outer ring, rolling element and cage have crack or gap on any one; ( b) On any one ring, rolling body fracture; ( c) Raceway surface, guard, with significant roller card injury; ( d) Maintains a significant wear and tear, or rivet significant relaxation; ( e) Raceway surface, there are rust on rolling element and injury; ( f) On the raceway surface, rolling body has serious indentation and mark; ( g) Inner ring diameter or outer diameter surface has obvious creep; ( h) Discoloration caused by thermal obvious; ( i) The bearing grease sealed, sealing ring or dust cover breakage is obvious. If there is no error and can be used correctly, to FAG bearing before the end of life, can be used for a long time, in this case, the general spherical roller bearing damage status to stripping. On the other hand, there are early damage by accident, and yield to the early damage of use, as the cause of early damage. Specific reasons to use and the consideration on the lubrication is not enough, and foreign invasion, the error of the bearing assembly and axis deflection of big, not enough research on shaft and bearing box and so on, can say, these reasons the situation more overlap each other. So we recommend that you on the basis of FAG bearing life formula to choose the size of the bearing, and in the full understanding of the machine of spherical roller bearing used, conditions of use, of the outer bearing structure, on the basis of if we can make clear before and after the accident situation, again according to the damage of the bearing and a variety of reasons, can prevent the similar accidents from happening again.
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