The typical way of rolling bearing failure is simple rolling contact fatigue spalling. This peeling, flaking area of about 2m square meters and a depth of 0.2 to 0.3 mm. To determine the measured vibration monitoring instruments. The spalling may occur in its seat on the surface of the outer race or rolling element. Wherein the inner race due to high contact stresses, the occurrence of cracking in many cases.
Various diagnostic techniques for rolling bearings, vibration monitors monitoring method is still the most important one. Overall, the time-domain analysis method is relatively simple, suitable for noise is small, simple diagnostic method; diagnostic method in the frequency domain, the resonance demodulation method is the most mature and reliable, suitable for precision bearing failure diagnosis; Time - similar frequency analysis method and the resonance demodulation method correctly identified the failure time and frequency characteristics of the signal, the more advantages.


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