Spindle Noise at start up

Onefinity Spindle Kit by Redline CNC
1

Hello. I have had my spindle for a week now. I did the break in routine as directed by the manual. It squealed a bit at first but then quieted down. I wrote the g code for the warm up routine and use it before cutting at the beginning of the day or if it has been more than an half hour since last cut. When I run the warm up routine, I still get a bit of squealing at the beginning of the warm up. It does quiet down as the warm up continues, and is gone by the end.

Is this OK? Or do I have a problem?

2

Redline FAQ says this normal for ceramic bearings

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3

That does not sound normal to me, I would expect premature failure with this.
Pat

4

My Redline spindle squeals during warmup too. Not during the entire warmup - just occasionally, for a minute or two, at certain speeds.

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