Correct judgment TIMKEN bearing operation rule and troubleshooting

TIMKEN bearing showed a strong regularity in the process of its use, and the repeatability is very good. The normal high quality bearing ( Bearing) , at the beginning of the use of vibration and noise are relatively small, but there are some scattered of spectrum amplitude is small, may be due to some defects in the process of manufacturing, such as surface caused by burrs, etc. Movement after a period of time, maintain a certain level of vibration and noise, frequency spectrum is very single, only one or two times the frequency. More than three times the power frequency spectrum, seldom appears bearing condition is very stable, steady working period. Continue to run after the late into use, TIMKEN bearing vibration and noise began to increase, sometimes a different sound, but the change of vibration increase is relatively slow, at this point, the bearing kurtosis value began suddenly reaches a certain value. We believe that the bearing is characterized by the early failure. At this time, requires the TIMKEN bearing is monitored closely, pay close attention to the change. Since then, bearing kurtosis value began falling fast, and is close to normal, and significant increase in vibration and noise, it began to accelerate the increase, when the vibration more than standard ( Such as ISO2372 standard) , its bearing kurtosis value also began to increase rapidly, when more than vibration standard, and kurtosis value is more than normal ( Available kurtosis relative standard) When we think of bearing fault has entered the late production, should be timely maintenance equipment, replace the bearing. Late show bearing fault feature to severe fault ( For bearing damage, such as holding shaft commonly, burns, sand spallation, raceway, wear beads, etc. ) Most of time not more than a week, the bigger the equipment capacity, the faster the speed, the shorter the time interval. Therefore, in the actual bearing fault diagnosis, once found late fault characteristics, should be decisive judgment is bearing fault, arrange inspection as soon as possible. A, bearing the rumbling of the sound device is adopted to the size of the rolling sound of bearing in operation and the quality inspection, bearing even with slight stripping damage, such as would an exception and irregular, and with the sound of the measuring device can distinguish. Two bearing vibration, the vibration of the bearing is sensitive to TIMKEN bearing damage, such as peeling, indentation, rust, crack and wear will be reflected in the bearing vibration measurement, therefore, through the use of special bearing vibration tester ( Frequency analyzer, etc. ) Can measure the size of the vibration, through frequency points cannot deduce the abnormal situation. Measured values of bearing or sensor installation position and different using conditions, thus requiring prior to each machine is analyzed by the measured value of the determined after judgment standard. Three, the temperature of the bearing temperature of bearing, generally have a bearing on the surface of the outdoor temperature can be predicted, if using the oil hole can directly measure temperature of bearing outer ring, is more appropriate. Usually, TIMKEN bearing temperature with operation began to slowly rise, 1 - After 2 hours to reach steady state.