Correct judgment KOYO clutch bearing under the rules of the determination of the rated dynamic load

KOYO bearing showed a strong regularity in the process of its use, and the repeatability is very good. Normal quality clutch bearings, 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 into the use of late, after 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 that the bearing is closely monitoring, 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 clutch bearing fault, has entered the late should be timely maintenance equipment, replace the bearing. Investigate its role should be to support, but that is only part of its role in supporting the essence of which is to be able to bear radial load. Can also be understood as it is used for a fixed axis. Is make it can only achieve a fixed axis rotation, and to control the movement of the axial and radial. The consequence of motor without bearing is can't work at all. Because axis movement in any direction, and when the motor work should make rotation shaft only. Theoretically impossible transmission effect, not only that, the bearing can also affect the transmission, in order to reduce the impact on the clutch bearing must implement good lubrication, itself has some KOYO bearing lubrication, called pre lubricated bearing, and most of the bearings must be lubricating oil, is responsible for running at high speed, not only because of friction increases energy consumption, more terrible is easy to damage the bearings. The sliding friction into rolling friction is one-sided, because there is a thing called sliding bearing. Clutch bearing ring grinding burn and grinding cracks are not allowed to exist, especially the inner ring to taper of the mating surfaces shall not be burned. If ring should be full inspection after pickling, picking burns products, severe burns can't repair or repair the unqualified should be scrapped, grinding burn is not permitted in the ring into the assembly process. After steel storage to the front of the ferrule grinding, each working procedure must be strictly management, strictly distinguish GCr15 and GCr15SiMn two kinds of materials and products made of different materials. KOYO bearing is whether can can be judged according to various needs to consider the extent of the damage, and in this respect main consideration is the effect of damage, for mechanical performance, with the importance of the conditions of the installation is need to consider, to the next overhaul period and the effect of the decision, but in the case of defects is not in use, must be replaced new bearing, for the inner ring and outer ring, rolling element and cage has a crack on any gap is to note that this is keep a effect in this respect. KOYO bearing show late fault feature to severe fault ( General for the clutch bearing damage, such as holding shaft, 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.