Keyway pulley on smooth shaft?

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peterm
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Post by peterm »

I am with JPG! I have used pulleys with keyways and no key, no problem.

Ignore the keyway.
Peter
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rjent
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Post by rjent »

JPG wrote:The 'KB' weld is on the pulley. The set screw 'sets' into the flat on the shaft.

IIWM, I would ignore the keyway in the pulley.
I guess I need to brush up on my reading skills ..... :D

But filling the key is even better ...
Dick
1965 Mark VII S/N 407684
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1950 10 ER S/N ER 33479 Reborn July 2016
1950 10 ER S/N ER 39671
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Ed in Tampa
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Post by Ed in Tampa »

I agree ignore the key way.
The only time it would come into play is if the pulley was revolving on the shaft, but since it is fixed with set screw ignore it.
Ed in Tampa
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JPG
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Post by JPG »

Ed in Tampa wrote:I agree ignore the key way.
The only time it would come into play is if the pulley was revolving on the shaft, but since it is fixed with set screw ignore it.
The keyway(s)/key 'prevent' rotation on the shaft.

That is also the purpose of the flat(as well as to provide an area for the set screw to bite into the shaft without making it impossible to remove due to the burr created.
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Ed in Tampa
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Post by Ed in Tampa »

JPG wrote:The keyway(s)/key 'prevent' rotation on the shaft.

That is also the purpose of the flat(as well as to provide an area for the set screw to bite into the shaft without making it impossible to remove due to the burr created.
DUH!

I was talking about using the pulley that had a keyway cut into it on an axle. I would think the edges of the keyway could cut into the axle or become a low spot on the rotating axis of the pulley.
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JPG
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Post by JPG »

Ed in Tampa wrote:DUH!

I was talking about using the pulley that had a keyway cut into it on an axle. I would think the edges of the keyway could cut into the axle or become a low spot on the rotating axis of the pulley.
That is why they are 'narrow'.;)
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Goldie(Bought New SN 377425)/4" jointer/6" beltsander/12" planer/stripsander/bandsaw/powerstation /Scroll saw/Jig saw /Craftsman 10" ras/Craftsman 6" thicknessplaner/ Dayton10"tablesaw(restoredfromneighborstrashpile)/ Mark VII restoration in 'progress'/ 10
E[/size](SN E3779) restoration in progress, a 510 on the back burner and a growing pile of items to be eventually returned to useful life. - aka Red Grange
docricketts
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Post by docricketts »

Seriously, you guys rock.

I'm going to stick with JPG on this one and, for now, ignore the keyway. However, I may cut a wider thread into the pulley and install a wider set screw with a flattened bottom to maximize contact with the flat on the shaft, just because I'm paranoid.

THANK YOU!!!
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skou
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Post by skou »

JPG wrote:The 'KB' (JB?) weld is on the pulley. The set screw 'sets' into the flat on the shaft.

IIWM, I would ignore the keyway in the pulley.
I'm sticking with JPG on this one. And, since I'm a Parotthead at heart, I'll say, "don't worry, be happy!"

steve
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ldh
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Post by ldh »

Solve this problem the easy way and go to MKC Tools and get a ER headstock or motor pulley that is a perfect fit.
LDH
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