I HAVE EDITED THE TITLE TO RELFECT A NEW FOCUS OF THE THREAD. 1/8/08.
Can anyone give me the fault frequencies for the following bearing:
Torrington 240BA51 or 240BH51, MRC 148R
I have a the following for MRC 148R
What we are seeing on this machine appears to be harmonics of 12.38 orders with running speed sidebands. Although the sidebands seem often higher than the main harmonic peak.
I can't really pick ou the periodicity in the time waveform (even though I suspect it should be 12.38 orders).
The machine is 324rpm. True pk/pk accleration (from TWF) is 25 g's. The ringdown frequency of the impacts on the TWF is around 100,000cpm which is around where the harmonics of 12.38 orders reach their highest level.
It sure sounds like a bearing fault, but I would be more comfortable if I could match it up with bearing frequencies.