Super low speed rotation IKO self-aligning ball bearing fault feature analysis

IKO bearing fault diagnosis method basically has two kinds: one kind is through resonance demodulation method for early fault of shock pulse. This approach is widely used, almost all the self-aligning ball bearing fault diagnosis instrument using this method. Due to the resonance frequency band selection is different, the sensitivity of various instruments to ask is not the same. Due to the severity and impact energy of IKO bearing failure is not a linear relationship, when the fault is serious impact energy sometimes can reduce misdiagnosis and appear instead. Another method is to directly on the bearing fault signal spectrum analysis, analysize ring, outer ring and roller failure frequency. This method only in the self-aligning ball bearing failure is serious to diagnose. Usually combine two methods can obtain the better diagnostic results. For low-speed heavy-duty bearing diagnosis method is limited by the above. Calculated IKO bearing failure frequency is low, usually in a fraction of Hertz to a few Hertz. Such unfavorable use frequency spectrum analysis method. Combined with the different failure forms and enter the bearing area and not bearing area. A comprehensive analysis of the fault. 3, shock response of low frequency, IKO bearings of low speed and heavy loading speed is low and its structure characteristics, so the shock response frequency is lower than other devices. Rotating platform axis bearing is a key component of the implementation platform function. Limited rotation Angle. Working Angle range of 0 ~ 180 degrees. Normal open and closed time is about 3 minutes. And beyond by statistics. Thus traditional self-aligning ball bearing fault diagnosis methods, such as resonance demodulation method, the acoustic emission method, does not apply to this type of bearing. So this kind of bearing has no characteristic frequency can be reference. Its frequency domain information cannot be used directly. Is a new field.