How small of a compessor I can use?.

by George Parrish
(Canton, Ohio 44706)

Im not sure how small of a compessor I can use for a 1in CP air gun.


What Im doing is running a small roadside tire service. And Im going to be running a one inch impact gun to install and remove semi tires. And money right now is everything, I need to know how small of a compressor I can use to run this gun.

Im going to be using a gas powered compressor and I know the gun at minimum needs a constant 90 psi, whats the minimum scfm Im kind of confused!
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Hi George. I have to tell you that impact guns use an awful lot of compressed air. Different models have differing requirements in PSI and CFM.

So, you need to look at the actual wrench specifications to see what that tool needs to run properly.

Based on that info, you can then estimate the compressor size, expecting to generate about 4 CFM of compressed air at 90 PSI for each HP of motor size.

But first, find out what the gun needs. Without that info you are not going to be able to select a correctly sized compressor.

If money is tight (and when is it not, my friend?) maybe start with finding a good used air compressor?

Cheers,

Bill

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Can I run an air nailer?

by G.Harlow
(Windsor Canada)

Can I run an air nailer with my 5.1 iron horse air compressor.
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Hello G. Harlow.

When you say yours is a 5.1 Iron Horse compressor, does the 5.1 refer to the HP?

If so, then you must be running it on 220 Volts as you cannot run a 5 HP motor with a 120 VAC power supply.

Having said that, a 5 HP compressor should generate in the area of 20 CFM of compressed air at 90 PSI.

What you haven't said is what the compressed air demand of your air nailer is.

However, even a small compressor putting out 90 PSI or so will fire a nailer. Since nailers use spurts of air, a small compressor is usually sufficient.

That is, of course, unless it's a framing nailer and you are working continuously. With a smaller air compressor, if there isn't enough compressed air flow, you may not be able to nail quickly enough for your needs.

Cheers,

Bill

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Brad nailers and SCFM

I recently purchased a small 2 gallon compressor capable of 100 PSI but the SCFM at 90 PSI is a mere 0.7.

I have looked at several brad nailers and most when rated, require 4.5 SCFM at 90 PSI. These were sometimes called 3 in 1 nailers. All I need is a brad nailer that is capable of driving 3/8 to 2 inch brads bearing in mind the limitations of the compressor I currently have. Thanks in advance, Kern Smith
smith.langer@nf.sympatico.ca
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Kern, you have to understand both PSI and CFM in that the air tool requires both to operate correctly.

Your compressor has, when the tank is full, about two gallons of air at 100 PSI. What's that in cubic feet of air? See: www.about-air-compressors.com/gallons-to-cubic-feet.html for information on that.

If your compressor cannot deliver the flow necessary, and you don't have enough air in the tank to deliver enough air, then your air tool will not work. Simple as that.

When you check out the link above, I think the answer to your question will be clear.

Also, you might find that this page on a custom brad nailer tank of interest. See: www.about-air-compressors.com/brad-nailer-tank.html .

He says that the amount of air in his portable nailing tank will give him 40-50 shots of his brad nailer using 3/4" brads.

Cheers,

Bill

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Dec 30, 2009
re brad nailer
by: Ken

For what it's worth, I bought a Campbell Hausfeld
2 in 1 staple/brad nailer. It has no SCFM rating or mentioned requirement but it will drive about 16 staples and/or 12-15 2 inch brads at a starting PSI of 100, before the compressor starts again. It cuts in at about 70 PSI. All I needed it for was to put some baseboartd/trim in place and the stapler works fine for putting carpet on stair treads. The nailer/stapler is also adjustable for controlling the depth. Thanks for the additional info regarding the conversion of gals to Cubic Ft. Have wondered about that and know a couple of people who will be interested in that info as well. Regards, Ken

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Farmhand air compressor run impact wrench?

by jeremy stevens
(round rock tx)

Impact wrench and 17 gal farmhand air compressor

will a 17 gal farmhand compressor remove semi truck tires
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Jeremy, no it won't. You'll need a tire mechanic to do that! :-)

All kidding aside, what you are asking is will your air compressor provide enough force and flow to run the impact wrench, yes?

In order to answer that, you need to know what the force and flow requirements of the impact wrench are, and then you can figure out if your air compressor can deliver that.

I expect that your air compressor has the force necessary (probably 125 PSI output or thereabouts) but what I don't know is if it has the flow necessary for your wrench.

Please see the Sizing pages on this site for more info.

Cheers,

Bill

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Feb 01, 2012
Follow-Up Comment to 12/31 posting
by: Anonymous

Jeremy,

My 17 Gal. Farmhand Compressor is for sale, if you're interested, please let me know & we can discuss it offline.

Thanks,
Mike

Jan 31, 2012
17 Gallon Farmhand Air Compressor Question
by: Anonymous

Jeremy,

Yes, it will. I own one & bought it to do just that. I re-plumbed it to bypass the tiny outlet line they had on it to run to the guages & quick disconnects, which severely restricted cfm. I straight plumbed it right out of the tank with 3/4" galvanized plumbing elbow, and put a quick disconnect straight into that for a 1/2 or 3/4 inch hose. My 1" gun then worked great; would bust 2-3 nuts before I'd have to let the tank catch up for 30 seconds or so. Works perfect for the application and it's portability is second to none for its size & capability!

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