Tool Time Discussions here pertain to the use of tools you use while fabbing and wrenching in the garage

In the market for an air compressor...what size?

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Old Aug 30, 2007 | 09:50 PM
  #1  
UKMyers's Avatar
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From: Solano Co, CA Originally a North Idaho Hick
In the market for an air compressor...what size?

Been looking at Craftsman Air compressors lately. I'm a newb to these things. What size would suffice for garage use and running basic air tools??? I don't want to go overkill. There's lots of good deals on craigslist I just need a model to search for.
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Old Aug 31, 2007 | 12:08 AM
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From: Tempe, AZ
depends on the kind of tools you are looking to use.

If you are looking to use an impact wrench/air rachet than you dont need a big thing.

If you are looking to use angle grinders, sanding tools, rotary cutters, paint guns, or anything else that uses a large volume of air you will need something 30gal plus imo.

I have a 30gal and it has to click on a good amount when using a rotary cutting tool but i never have to stop because im running out of air.
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Old Sep 1, 2007 | 09:54 AM
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I have some compressor/tank sizing information on the web page below:
- http://www.4crawler.com/4x4/CheapTri...tml#HowMuchAir

In short, size to match the anticipate tool requirements. I run a 12CFM.20 gallon Campbell Hausfield compressor, it is adequate for all the air tools I use, might be a bit small for sand blasting.
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Old Sep 1, 2007 | 11:37 AM
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Go as big as your budget allows. It will run less and you will find ways to use the air.
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Old Sep 1, 2007 | 12:23 PM
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From: Vancouver, BC
A belt-drive compressor will be a lot quieter. oil-less, direct drive compressors will drive you nutz with the noise.

240v motors don't have to work as hard as 120v motors.

Bigger reservoir is better. I'd rather have a 60gal tank with a 5hp motor vs a 20gal tank with a 10hp motor.

Drain the moisture from the tank every time you use it. Dry air is better for your tools, and water in the bottom of the tank will rust it out.

At home I run an 80gal tank with a 18cfm@90psi belt-drive compressor. It is wired directly to the 240v in the sub-panel with BX wiring. Our tank sits at 125psi, and I run high-flow couplers, and top of the line professional air tools.

If you're doing serious mechanical work, consider getting a 3/4" impact wrench for removing the big rusty bolts.

HTH.
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Old Sep 4, 2007 | 07:22 AM
  #6  
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From: the '307'
Originally Posted by WATRD
Go as big as your budget allows. It will run less and you will find ways to use the air.
I completly agree... Bigger is almost always better for a compressor [volume]. Nothing is more irritating than waiting around for the compressor to regain pressure
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Old Sep 4, 2007 | 07:49 AM
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From: Solano Co, CA Originally a North Idaho Hick
Thanks for the input. I only plan on running an impact gun, air ratchet ect.
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Old Sep 4, 2007 | 09:13 AM
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CJM
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Home depot has a husky branded one I been looking at for awhile for about 350 bucks. Sometimes they run a deal and you get the tools with it too. Its a 5hp model with I think a 30 gallon tank.
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Old Sep 4, 2007 | 10:10 AM
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From: Austin Texas
there is a problem though--most air ratchets do 6cfm at 90psi. Most 110v wont do this volume. Mine used to run short all the time--now i have upgraded to a 14.5 @ 90psi 220v from Harbor Freight (330$). Quiter and air to spare--use for lots of stuff now and have never had a problem with it.

Buy what you can--it always sucks to have to go back and upgrade--it has happend i cant tell you how many times.....

Just .02$
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Old Sep 9, 2007 | 01:52 AM
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From: Colorado
Does your compressor location have 220V or 110v?
Whats your max~ estimated budget?
Need more info...
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