Skool me on Gearbelt Pulleys

[plow]

So I'm building this dry cut saw and need a couple of pulleys to drive it. My 3hp motor has a 1-1/8" shaft (1/4" keyway) and she turns 1750 RPM. in order not to increase the blade RPM, I need the smallest Dia. pulley on the motor. I figure a gearbelt type can be smaller Dia. than a V belt type.

My shaft that will drive the blade will be 3/4". I want it to be as big as I can get, without being large enough to exceed the height of the pillow block bearing that the shaft utilizes. Or at least not by much. The idea is to lower the RPMs a bit if possible.

Now my question. Where to find these puppies? The sites I've found are like reading Chinese. Also I want to order them used or close out on line from ebay or the like to save money.

Any help is appreciated.

 

[metaleltr]

Old timing belt pulleys?

 

[CJKaz]

http://www.martinsprocket.com/docs/default-source/catalog-synchronous/timing-pulleys.pdf?sfvrsn=4

Other documents on Martin's site describing the design requirements.

Available at industrial suppliers such as Grainger, Applied Industrial, Kaman etc

 

[arsco]

a jack shaft might make things a bit easier

 

[plow]

a jack shaft might make things a bit easier

I'm trying not to go that route if I don't have to. Thanks tho.

 

[plow]

http://www.martinsprocket.com/docs/default-source/catalog-synchronous/timing-pulleys.pdf?sfvrsn=4

Other documents on Martin's site describing the design requirements.

Available at industrial suppliers such as Grainger, Applied Industrial, Kaman etc

That helps alot! at least I can talk more intelligently about them. Looks like I need a couple 16H100's that are plentiful AND cheap on flea bay . Do you know if the end user bores and broaches them or do you order them with the bore size needed? I see them at 5/8" bore with a max of 1-1/4". Seams like an azz load of trouble to go through for an end user.

 

[plow]

Old timing belt pulleys?

Kinda. Check the link below. Very informative.

 

[LJZ]

Hi Plow:
Say ya might have already checked but in case not.
Bando is a huge supplier of drive systems. They make a lot of stuff.
http://www.bandousa.com/html/pdfs/bu-200_power_trans.pdf

Also we do business with McMaster Carr everyday. Never let us down and they have a very nice website.
http://www.mcmaster.com/#

If you are trying to go improvise - used stuff. Maybe Check out external drives for pumps on race cars. Used stuff on racing junk, fle bay all the time.
Good luck
Luke

 

[plow]

Hi Plow:
Say ya might have already checked but in case not.
Bando is a huge supplier of drive systems. They make a lot of stuff.
http://www.bandousa.com/html/pdfs/bu-200_power_trans.pdf

Also we do business with McMaster Carr everyday. Never let us down and they have a very nice website.
http://www.mcmaster.com/#

If you are trying to go improvise - used stuff. Maybe Check out external drives for pumps on race cars. Used stuff on racing junk, fle bay all the time.
Good luck
Luke

Thanx for the tips Brother.