Correctly judge the cross roller bearings operating rules and fault

Bearing on its use during exhibit strong regularity and repeatability is very good. Normal quality bearings used in the beginning, vibration and noise are relatively small, but some scattered spectrum and amplitude are small, probably due to some flaws in the manufacturing process, such as surface burr due.
    Exercise period of time, to maintain a certain level of vibration and noise, the spectrum is very simple, there is only one or two multiplier. Rarely occurs more than three times the frequency spectrum, bearing condition is very stable, into a stable working period.
    Continue to run late into the use, cross roller bearing vibration and noise begins to increase, sometimes different sound, but the change in vibration increases more slowly this time, bearing kurtosis value starts suddenly reaches a certain value. We believe that at this time cross roller bearings that showed initial failure.
    At this time, it is requested that the cross roller bearings for close monitoring, pay close attention to the changes. Since then, bearing kurtosis values ​​began to decline rapidly, and close to normal, while the vibration and noise begins significantly increased, its growth began to accelerate significantly, when the vibration exceeds vibration standards (such as ISO2372 standard), and its bearing kurtosis value starts Rapid increases, when both exceed vibration standards, and kurtosis values ​​than normal (available kurtosis relative standard), we believe that the bearing has entered the late failure of production, the need for timely maintenance equipment, replacement of cross roller bearings.
    cross roller bearing exhibit advanced fault characteristics to a serious failure (generally axle bearing damage such as burns, sand shelf spallation, raceway, wear beads, etc.) is not more than one week big time, equipment, greater capacity, speed more quickly, and the shorter the interval. Therefore, the actual cross roller bearing fault diagnosis, once found fault with advanced features, should be decisive bearing faulty judgment, as soon as possible overhaul.