Reply by MrUnix

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Posted on Keyed pulley, smooth shaft??

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7402 posts in 2613 days

#1 posted 08-29-2016 08:45 PM

What BBYeti said ^^^^

I have an almost unlimited supply of those motors for free… My BIL has a pool service company, and like most pool service companies, they will replace a bad motor rather than attempt to fix it (faster, easier and larger profit). For 98% of them, it’s either the bearings that have gone bad (causing the motor to squeal) or a bad start capacitor. They ship out the old motors by the pallet load as scrap metal, and I can rummage through them all I want to see if there is anything worth while to snag. Can’t remember the last time I actually had to BUY a start capacitor :)

Point is, the bearings in those motors are standard 62xx series deep groove radial ball bearings. Exact same bearings in just about every other electric motor you will find on a typical wood working machine. They can certainly be used to power a jointer… but they are much longer than a more traditional motor, and as you have noticed, they have a threaded end to engage the impeller rather than a more common keyway/setscrew arrangement. While a keyway could be machined into the shaft, it would be cheaper and easier to just grind a flat.


PS: Those motors are not reversible, so pay attention to how you mount it. A jointer running backwards isn’t going to do you much good :)

-- Brad in FL - In Dog I trust... everything else is questionable

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