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Timken deep groove ball bearings cleaning, maintenance and damage reason analysis - bearing knowledge

by:Waxing     2020-05-27
First of all, some equipment in using TIMKEN bearing on its own special strict clearance problem, if the clearance is too large, even a little bit big, it will be easy to make the equipment parts wear and tear, so by reducing clearance had to solve this problem, but then another question again, that's clearance is too small, cooling, heat dissipation if improperly, it will be very easy to cause the internal temperature eventually cause bearing overheat and burn! The second is probably too big load ( Preloading is too big) 。 Speed is too large. Clearance is too small. With water or other foreign matter invasion. If the above two cases are not the shaft, the accuracy of bearing box, shaft deflection. See here, I think everyone wants to know the solution, first of all, to study lubricants and lubrication method, choose the right TIMKEN deep groove ball bearing lubricant, and its dosage, and the selection of the bearing must be corrected. Study to cooperate, bearing clearance, and preloading, and improve the sealing device. Check the shaft and the precision of the bearing housing. Of course, if you have any experts beside you, let him follow you learn best operation! 1, the bearing cleaning removing bearing under repair, first recorded appearance of deep groove ball 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, first put on the metal mesh at the bottom of the bearing is not 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, is the deep groove ball bearings 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 judge whether the bearing of the removed can be used again, check after bearing clean, carefully check the raceway surface, rolling surface, cooperate with the state, the abrasion of cage, the increase of the bearing clearance, 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 tapered roller bearings and bearing, rolling body, the outer ring raceway surface can be respectively. Large bearing can't rotate with the hand, pay attention to check the rolling element and raceway and the appearance, such as, cage, guard the importance of bearing high must check carefully. Whether can be used to judge, is to think about deep groove ball 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 bearing: ( 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. Internal factors mainly refers to the structure design, manufacturing process and material quality and so on three major factors in determining the quality of bearing. Deep groove ball bearing materials of metallurgical quality were the main factors influencing the TIMKEN bearing early failure. As metallurgy technology, For example, the bearing steel vacuum degassing, etc. ) Progress, raw material quality is improved. Raw material quality factor in the bearing failure analysis share has declined obviously, but it is still one of the main influence factors of deep groove ball bearing failure. Select material adequacy is still bearing failure analysis factors must be considered.
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