Bearings are burnt and damaged

The so-called burn damage state of INA bearing means that the raceway wheel, rolling element and cage of the bearing heat up rapidly during rotation until discoloration, softening, welding and damage. The main reason for INA bearing burns is due to poor lubrication of tapered roller bearings, irregular lubricants may be used, or too much or too little lubricant is incorrect. Second may be excessive load. Speed ​​is too high. Clearance is too small. Water or other foreign objects have entered. If the above two situations are not the case, then the accuracy of the shaft and bearing housing is poor, and the deflection of the shaft is large. Seeing this, I think everyone wants to know the solution. It is necessary to study lubricants and lubrication methods, choose the right bearing lubricant, and its dosage, and to correct the choice of tapered roller bearings. Investigate fit, bearing clearance and preload, and improve sealing arrangements. Check the accuracy of the shaft and bearing housing. It is recommended that when using INA bearings, attention should be paid to installation, lubrication, clearance and other aspects to be as accurate and in place as possible. The serious failures caused by these flow bearings are often sudden and catastrophic, such as the sudden rupture of the bearing cage, the sudden combustion and rupture of the inner and outer rings of the tapered roller bearing, etc. Now, fake and inferior bearings will inevitably enter enterprises and equipment. These failures will cause the rotor to hold the shaft, and in severe cases, the rotor or equipment will be scrapped. In recent years, I have often encountered such situations in practice. Therefore, in the actual monitoring and diagnosis, it is necessary to diagnose the status of the INA bearing as soon as possible, and replace the fake and inferior bearings in time to prevent the occurrence of major accidents. In a large number of such accidents, some practical skills have also been accumulated, that is, in the early stage of operation of such bearings after installation, monitor their vibration status and conduct spectrum analysis. It is found that the frequency spectrum of the bearing has its unique characteristics in the early stage of operation, that is, the power frequency of the equipment generally does not occupy the main component. However, the total value of vibration is not large, and judging that the vibration is qualified by the vibration standard will arouse my vigilance, at this time. This state is indicated by defects in INA bearing components, etc., and its failure is often very fast and very sudden. It is necessary to pay attention to accumulating the frequency spectrum and vibration time domain of the normal operation of high-quality bearings on the equipment, and when diagnosing the faults of these fake and inferior bearings. It is convenient to judge the fault of full-roller bearing without outer ring in time when such abnormal frequency spectrum occurs, and prevent equipment accident. Secondly, it may be too large load, too large speed, and too small clearance. Water or other foreign objects have entered. If the above two situations are not the case, then the accuracy of the shaft and bearing housing is poor, and the deflection of the shaft is large. Seeing this, I think everyone wants to know the solution. First of all, we must study lubricants and lubrication methods, choose the right bearing lubricant, and its dosage, and correct the choice of tapered roller bearings. Investigate fit, bearing clearance and preload, and improve sealing arrangements. Check the accuracy of the shaft and bearing housing. It is recommended that when using INA bearings, attention should be paid to installation, lubrication, clearance and other aspects to be as accurate and in place as possible. The serious failures caused by these flow bearings are often sudden and catastrophic, such as the sudden rupture of the bearing cage, the sudden combustion and rupture of the inner and outer rings of the tapered roller bearing, etc. Now, fake and inferior bearings will inevitably enter enterprises and equipment. These failures will cause the rotor to hold the shaft, and in severe cases, the rotor or equipment will be scrapped. In recent years, I have often encountered such situations in practice. Therefore, in the actual monitoring and diagnosis, it is necessary to diagnose the status of the INA bearing as soon as possible, and replace the fake and inferior bearings in time to prevent the occurrence of major accidents. In a large number of such accidents, some practical skills have also been accumulated, that is, in the early stage of operation of such bearings after installation, monitor their vibration status and conduct spectrum analysis. It is found that the frequency spectrum of the bearing has its unique characteristics in the early stage of operation, that is, the power frequency of the equipment generally does not occupy the main component.

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