Reply by MatthewW

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Posted on New here with a few table saw motor Qs...

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23 posts in 2423 days

#1 posted 09-01-2011 01:38 AM

Thanks for the info Minorhero. There are probably a few thousandths of clearance between the motor shaft and pulley. I think this is because the saw ran without a key installed for some time. It was missing when I bought it and the set screw was tightened into the keyway. I’ve replaced it, but I think the pulley has worn slightly, I doubt the motor shaft wore as much. It’s enough clearance to wiggle around by hand a little. The runout on the motor pulley is close to .009” on the inside edge, is that too much? The shaft and arbor have less than .001” runout so I know I’m good there. If I have to get new pulleys I’ll probably get the machined steel upgrades unless I shouldn’t for some reason.

I’m replacing the motor bearings with the sealed version as you suggested. The gentleman at the bearing supply store also confirmed that this is probably the better option, even though there shouldn’t be too much difference in this case. I’ll call around to see how much a shop would charge to press them on and off, but if it’s more than I paid for the bearings, I’ll probably just rent the tool from an auto parts store and try myself.

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