Source for a part

The first place I would look is a farm supply store. Look for where they sell big electric motors first, then maybe around where they sell sprockets, bearings, etc.

Dave

Yes, pulley is fine, "sheave" sometimes.

Cast iron? Unlikely you'll find one. Search for industrial supply, those that specialize in transmission (gears, belts, pulleys, bearings).

McMaster Carr is sure to have some.

On Thu, 11 Dec 2003 17:54:59 GMT, Absinthe put forth the notion that...

Try asking for a sheave.

Yes, sheave or a motor pulley. An appliance repair store will have a few too.

JohnF

Sorry, I am an idiot. I just meant to just say "cast" aluminum or zinc or whatever. Not cast-iron.

What you want is a "fixed bore sheave". In smaller sizes they are usually die-cast zinc alloy. You need to know 3 dimensions. First is the outer diameter. Then the bore size to fit the motor shaft which is usually 3/8", 1/2" or 5/8" for that size sheave and finally the belt type. V-Belts come in (from smallest to largest)3L, 4L, 5L, A, B, C and several others. A 3/8" wide belt is probably a 3L.

There is a fourth dimension called the "pitch diameter" which is used for calculating the ratios between two sheaves. For 3L belts this is about 1/2" less than the OD.

So what you need is a 1 1/2" 3L sheave with a bore of what ever size your shaft is. Not likely you will find it at Ace or the Home Despot. In fact if you asked a clerk he would avoid you next time to keep his ignorance hidden. If you have a Grainger in your town they can fix you right up. If they don't have it in stock they can have it in the next day or two.

Abs> I am looking for a part. It is a "pulley" as far as I know to call it. It is

Or look under bearings in the phone book. They often have pulleys or would know who does.

I would go to True value or Ace hardware stores.

Richard W.

Yes. Try

and look under the "Power Transmission" heading for "V-belt Pulleys". David