The practical Rolling spectrum analysis and diagnostic skills

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Data acquisition uses have been relatively common. However, in practical attention skills. Little vibration, bearing kurtosis complex spectrum of the vibration signal in the field is difficult to judge whether the fault condition vibration signal acquis ition back spread computer precision analysis. In this case, the first routine analysis, check the vibration velocity spectrum and bearing kurtosis is close to the standard, and then examine whether the vibration energy excessive power spectrum, power spectrum, the observed spectrum of frequency components. If the spectral lines corresponding to the frequency of workers frequency of aneuploidy, you should focus on to find the structure of the unit failure; power frequency scores times more decimal places frequency, you should focus on to find the bearing offerings frequency, and if so, bearing exist failure, in the absence of excluded after the failure of other components need to cause alarm, to strengthen the monitoring. Actually found many vibration is not excessive, the emergence of the examples of bearing failure. Once the bearing characteristic frequency or close to the bearing characteristic frequency spectrum should be determined bearing fault, then, according to the amplitude of the size, can be used for trend analysis or arrangements for maintenance. slim bearings