broken motor pulley

[T...K21]

I just purchased a 50's vintage Craftsman lathe from a coworker for close to nothing.

Everything seems to function and line up good...I think. Is there any part prone to wear on the lathe I should take a look at that may require maintenance before I use it?

Also... the highest speed on the 4 groove pulley on the motor is broke. It still works on the other speeds and is how the former owner has been using it but I'd like to try to replace it. Any suggestions to where I can look for a replacement pulley? Are pulleys universal or specific to make and model?

Thanks, T

[Daryl]

If you can't get the pulley from Sears, try McMaster Carr or Grainger. If you have a local industrial supply, take the broken pulley there and they will match it.
As for parts that may be worn, look at the bearings, especially if you have the sintered bronze ones.

[cabinetman]

If you can't get the pulley from Sears, try McMaster Carr or Grainger. If you have a local industrial supply, take the broken pulley there and they will match it.
As for parts that may be worn, look at the bearings, especially if you have the sintered bronze ones.

+1. You can match it up by shaft diameter, and how it's keyed or fixed to the shaft. I've had pretty good luck with Grainger.

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[TCOTTLE]

You could also check Tractor Supply for a pulley, if you have one near you.

[LCHIEN]

At Graingers, they have many 4-step pulleys like this one:

http://www.grainger.com/Grainger/CON...560?Pid=search

catalog page with all 3- and 4-step pulleys 1/2" or 5/8" shaft
http://www.grainger.com/Grainger/wwg/catalogPDF.shtml

And sears has these, probably in their local and hardware stores.
http://www.sears.com/chicago-die-cas...1&blockType=G1

[cabinetman]

At Graingers, they have many 4-step pulleys like this one:

http://www.grainger.com/Grainger/CON...560?Pid=search

catalog page with all 3- and 4-step pulleys 1/2" or 5/8" shaft
http://www.grainger.com/Grainger/wwg/catalogPDF.shtml

The pulley pictured in that link appears to be a 3 step pulley. It may be just to illustrate stepped pulleys. This link depicts a 4 step.

.

[T...K21]

Thanks you guys. I'll look this evening when I get a chance.

Also...When it comes to belt tension. The weight of the motor suffice to keep tension or should I add a spring loaded tensioner- pulley to add tension?

The motor was mounted on a separate board from the lathe and attached with a hinge. The belt is the only thing keeping the motor from swinging down. The board doesn't lock and swings freely.

Thanks, T

[cabinetman]

Also...When it comes to belt tension. The weight of the motor suffice to keep tension or should I add a spring loaded tensioner- pulley to add tension?

The motor was mounted on a separate board from the lathe and attached with a hinge. The belt is the only thing keeping the motor from swinging down. The board doesn't lock and swings freely.

Thanks, T

Some are mounted with a slide adjustment. It wouldn't be inordinate to be tensioned by motor weight...contractor saws are done that way.

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