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Pulley for treadmill motor question

I already googled and came up empty. I have a 2.5HP DC motor and controller that I want to put on my drill press but I can't find a pulley to fit it. The shaft is 17MM (0.669") by 1" length with an additional section 1/2-13 LHT on the end. The original treadmill pulley/flywheel takes a flat ribbed belt which I can't adapt to the DP.

So what to do? Does anyone know of a source for a V-belt(4L) pulley with a 17MM bore? Alternatively would turning the shaft down to 5/8 be feasible? Or maybe boring out a 5/8 pulley? Any suggestions or ideas on how to solve this are welcome.

Art

Reply to
Artemus
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Bore or ream pully to fit shaft.

Reply to
clare at snyder.on.ca

Do you owna lathe? Easy job to bore a pulley on the lathe. Don't even think about working on the motor shaft.

Karl

Reply to
Karl Townsend

Reply to
William Noble

If the stock pulley bore is too big, you make a collar on a lathe (example:

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If the stock pulley bore is too small, you enlarge it on a lathe.

And if just right, then like Goldilocks, you are happy.

Reply to
Richard J Kinch

Oops. Make that 0.672.

Reply to
Artemus

I don't own a lathe nor do I know anyone in the Portland OR area with one. I did find a 43/64 drill bit at my hardware store which is 0.472 or about 3 thou over. Is it feasible to use it and then use shim stock to take up the difference? Or am I just begging for a wobbly pulley? Art

Reply to
Artemus

Don't do it. Find a lathe and do it right. Or find a local hobby machinist and spring for a 6-pack of his choice.

Reply to
Rex

Yes to what Rex says. A drilled hole will not be very round (they're trilobal, but don't worry about it), and it will be oversize. It will have other problems. That's why we use a drill to make a rough hole and a boring tool or a reamer to finish it. A boring tool on a lathe is best.

-- Ed Huntress

Reply to
Ed Huntress

Dang, I wish I had this many choices in used machines as the OP does in Portland!

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Contact one of these guys and see if he'll do you a quicky Or buy a lathe. Some of these look like pretty good deals.

Reply to
Rex

Reply to
Artemus

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