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1x, 2x,..., 30x Rpm

1x, 2x,..., 30x Rpm

1x, 2x,..., 30x Rpm

(OP)
Hello,

      I just caught a signal with 1x to 30x rpm harmonics on a spindle. This is the first time I see that. I suspect that the spindle housing is loosened in its fit (this is a cartridge spindle). Have someone already seen this before?

Thanks for your help,

RE: 1x, 2x,..., 30x Rpm

(OP)
Answer to myself or anyone else...

It appeared that the spindle was vibrating in its cartridge. The play was probably over 0.010'' creating 1x...to 30x rpm harmonics.

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