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Reply by northeaster

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Posted on Zero clearance insert causing blade noise

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northeaster

52 posts in 1215 days


#1 posted 03-17-2012 04:46 AM

It sounds unlikely in your case, but I’d consider the possibility of motor shaft bearings contributing to runout as well.

I mention this because, over several months, I noticed a gradually increasing rattle at startup and shutdown only with my ZCI and not with wider inserts. I readjusted the insert leveling screws and repeated the original setup cut of the ZCI. Got no improvement, so let it go. Wrong…

A few weeks ago, I found that drive belt tension was fine, but had a bearing squeak that I traced to the motor; the arbor bearings were noiseless and without any play I could feel. I replaced the motor only (under warranty) and my noise is now gone.

Looking back, my best guess is there was a certain amount of vibration transmitted to the blade despite belt drive and have added that to my list of things to consider if something sounds awry in the future.


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