air compresser for sandblasting

charlespretzer · Apr 13, 2013

Has anyone ever tryed to hook up a compressor to the pto or belt drive of a tractor?That wood make one less motor to keep running!!

old · Apr 13, 2013

Could be done but a PTO spins ate around 545 RPM and that is to slow for most compressors s you would need to gear it up a good bit. I have a compressor mounted under the hood of my pick up so I can use it when I need to air up a tire in the field etc

Royse · Apr 13, 2013

John Deere and probably others, used to sell small PTO driven compressors.
They were more for airing up tires, no air tank on the ones I've seen.
It takes a much larger compressor than these to run a sand blaster, but it
probably could be fabbed up.

rustyfarmall · Apr 13, 2013

Doing a direct drive most likely would not spin the compressor fast enough, but if you were to mount a belt pulley on the PTO shaft it could be made to work. You would need to do some math to determine the proper sizes of pulleys. Most likely would need to use a jackshaft with more pulleys to achieve the desired results.

Anonymous-0 · Apr 13, 2013

You used to able to buy a hydrovane that ran off the
PTO from Massey Ferguson.

Maxgussam · Apr 13, 2013

RPM and pulley size calculator:
www.temecularodrun.com/ref/rpm_calc.asp

Fritz Maurer · Apr 13, 2013

Forget it!!

gene bender · Apr 13, 2013

Belt pulley only runs around 1500 and electric compressors use a 3450 rpm motor. You also would need a system for the tractor engine to shut down when pressure is reached then to cut in when pressure goes down. It can be done with a bunch of stuff added to the engine to make it run at high throttle when under load then dropping back to idle when pressure is reached.
Untitled URL Link

Anonymous-0 · Apr 13, 2013

Lots of commercial compressors use 1800 RPM motors but even then the compressor is slowed down. It's better to have a larger compressor slowed down than have a smaller one sped up for the same CFM. A good compressor only needs about 700 RPM but cheap compressors need a lot more than that. I think if you could keep it under 1200 RPM would give good life.

Paul from MI · Apr 13, 2013

You may be able to pick up a large stationary compressor for not much more than scrap value. If you have a suitable tank you should be able to make up a system that will provide lots of air at a reasonable cost. You will need to include an "unloader" valve to allow the compressor to "unload"(not pump air) when your set pressure is reached and "load" (start pumping air) when the pressure drops. Of course you will need a belt and jackshaft set-up to get the compressor to run at its rated rpm when the tractor PTO is running 540rpm. There is no need to idle the tractor down or speed it up, the unloader valve does that function by turning the compressor "off or on".

Anonymous-0 · Apr 14, 2013

I have a big Westinghouse 3 cyl. compresser I run with the pto as it had a 25hp 3 phase motor that didn't come with it and I have no 3ph anyway. I used a jackshaft off of a Habco corn drier. It runs about 1 to 1 which is ok for a 1/4" tip, I'd like to speed it up a little someday and go to a bigger tip.

air compresser for sandblasting

charlespretzer

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old

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Royse

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rustyfarmall

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Anonymous-0

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Maxgussam

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Fritz Maurer

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gene bender

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Anonymous-0

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Paul from MI

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Anonymous-0

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