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Splined pulley (sheave)

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Ron from IL

11-15-2002 13:10:51




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Hey!

Does anyone know where I might get a V- or B-belt pulley (around 4" O.D.) with a splined hub to fit the PTO (1-1/8") shaft of my 2N? I have a BIG one for my Woods belly mower, but I'd like to get a smaller one for a project. I've surfed to find one (Google), but came up short. Any ideas?

TIA

Ron




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jack nc

11-15-2002 20:02:26




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 Re: Splined pulley (sheave) in reply to Ron from IL, 11-15-2002 13:10:51  
you can buy splined sleeves that are straight on the outside. not sure where,some industrial supply i would guess. then get a pulley with taper lock bushing to fit the outside of splined sleeve
hope this helps



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Jim, S.E. Mich

11-15-2002 14:36:11




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 Re: Splined pulley (sheave) in reply to Ron from IL, 11-15-2002 13:10:51  
Ron:
If you have a scrap hub or pully or anything with the spline in it, which you need for a start, it should not be very difficult to make a pulley and mate it to the spline either with a shrink fit & pin, or bolt pulley and spline together or whatever.
If you have someone with a metal Lathe it would be quite easy to make. I have done this many times but I love to work in my shop. About what diameter are you interested in? Jim

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Ron from IL

11-15-2002 14:43:28




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 Re: Re: Splined pulley (sheave) in reply to Jim, S.E. Mich, 11-15-2002 14:36:11  
Jim,

About 4" O.D. The sheave I already have is a tapered hub type.

Ron



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Jim, S.E. Mich

11-15-2002 18:01:16




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 Re: Re: Re: Splined pulley (sheave) in reply to Ron from IL, 11-15-2002 14:43:28  
Ron;
You need a piece of metal with the proper spline to fit your 1-1/8" shaft.
If I had the piece to fit the spline shaft I would turn the O.D. to a known size. Then I would bore out another piece about .005" smaller than the O.D. of the first piece. Then I would heat up the piece to about 300-400 degrees and press it over the first piece. This would give you a shrink fit and when cool would be like one solid piece. (Of course what you would do would depend on the dimensions of the pieces you started with.) If the piece with the female spline was large enough in diameter you would not need to screw around with this shrink fit thing.
Anyway then I would turn the O.D. of the piece to mate with the taper lock sheave you were mentioning that you have.
There is another way that you could accomplish this and that is if you have a taperlock sheave, you could bore the I.D. to the minor dia. of the spline (probably around 7/8") and actually cut the spline with a drill press, or better yet metal Lathe, one chip at a time. You make a tool similair to a slotter tool or broach tool.
Many ways one could do it when machining/manufacturing has been your whole life.
Jim
jspencer1@comcast.net

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