How to determine whether roller bearings need to change

Roller bearing manufacturer availability check, mainly considering the one-way bearing damage degree, mechanical properties, importance, and operating conditions, to the next overhaul period. If there are the following defects can't use, need to change the new composite roller bearing. The inner ring and outer ring, rotating body, keep any one have crack or gap. Most of the bearing damage for many reasons - — Than the original estimate of load, the effective sealing, tight fit is too small, as a result of roller bearing clearance, etc. Any of these factors factors there is its special damage forms and will leave a special signs of deterioration. Examine damaged shaft bearing, therefore, in most cases can find its possible causes, Outlines, one-third of the one-way bearing damage resulting from the fatigue damage, a third of the other resulting from poor lubrication, a third of the other resulting from pollutants into the bearing improper handling or installation. Roller bearing has burn injury refers to: wheel bearing raceway, the rotating body and maintains a sharp heat until discolored in reverse, softening, deposition and damaged. The second is probably too much load. Speed is too large. Clearance is too small. With water or other foreign matter invasion. If the above two cases are not hot or shaft, the accuracy of bearing box, shaft deflection. See here, I think everyone wants to know the solution, to study lubricants and lubrication method, choose the right roller bearing lubricant, and its dosage, and to select the correct bearing. Study to cooperate, bearing clearance, and preloading, and improve the sealing device. 1, bearing maintenance: for as long as possible to maintain the performance of the bearing was on good condition and must be maintenance, repair, in order to Hyman disorderly arrangement to ensure the reliability of operation, productivity and economy progress. Maintenance conditions of mechanical operation of the corresponding operation standard, on a regular basis. Contents include monitoring operation condition, supplement or replacement of lubricants, remove the check on a regular basis. In the operation maintenance item, a one-way bearing torsional sound, vibration, temperature, the condition of the lubricant and so on. 2, maintenance of roller bearing, bearing of clean: remove the bearing maintenance, record the appearance of the 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, rough washing and fine washing, respectively in the container, put a metal mesh bottom first, make the bearing is not direct contact with dirt from the container. Coarse when cleaning, if make the bearings with dirt, can injure the rotation of the bearing 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, roller bearing in cleaning the oil in reverse, carefully clean. In addition, the clean oil is always kept clean. 3, maintenance and calibration of roller bearing: in order to check whether the bearing is removed can use, check after wash composite roller bearing. Check the raceway surface, turn the plane, with the situation, the abrasion of cage, the increase of the one-way bearing clearance and has nothing to do with dimension precision falling damage, abnormal. Non separation of small ball bearing, the inner ring with one hand support level, reverse confirm whether smooth outer ring.