11x vibration frequency
11x vibration frequency
(OP)
I have just done some noise measurements of a bench grinder mounted on a pedestal just to try out analysing frequencies using a microphone ( Just because I got my hands on one). I picked the grinder because it is quite noisy and didn’t have a gearbox.
It rotates at 2918 rpm circa 50 Hz however the largest peak is at 11x. I don’t know the number of balls in the bearing this could be 11 and could account for it. The next largest peak is at 7x.
My question is if the stand has a natural frequency of 11x the forcing frequency will this show up as a higher peak than the forcing frequency.
It rotates at 2918 rpm circa 50 Hz however the largest peak is at 11x. I don’t know the number of balls in the bearing this could be 11 and could account for it. The next largest peak is at 7x.
My question is if the stand has a natural frequency of 11x the forcing frequency will this show up as a higher peak than the forcing frequency.





RE: 11x vibration frequency
A well balanced rotatry machine might have no first order in its spectrum.
Cheers
Greg Locock
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RE: 11x vibration frequency
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RE: 11x vibration frequency
RE: 11x vibration frequency
Walt
RE: 11x vibration frequency