Turning Archive 2007

Subject:
Question about Jet mini motor pulley.

Phil Joines Krum, TX
>I'm retrofitting a treadmill motor to a Jet mini. When I checked the pulley prior to boring it to 5/8" I found the existing hole to be off center by 0.015" at the large end and 0.007 at the small. The boss inside the large end isn't concentric either. Anyone else ever check one?

I think I'll mount the pully on a mandrel and true the boss. Then mount by the boss in a 3 jaw to rebore. I'd get a spindle pulley and bush it but they may not be true either.

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