Impact Wrench Specs

IH8Wood · 09-02-05, 11:48 PM

I'm looking at the specs for an IR 213C impact wrench here:
http://www.irtools.com/IS/modelComp_...61,862,311,219

It shows that the "Av. Air Consump. cfm" to be 4.2, and the "Min. @ load cfm" to be 22. What's the 22cfm? It seems like it would take a lot of compressor to sustain that flow.

ff347 · 09-03-05, 04:56 AM

To get the potential use out of it, I would say that a two stage 80 gallon compressor is what you would want. IR T30, something in that neighborhood, of course the use/duration matters alot.
scott

FJ60Cam · 09-03-05, 08:47 AM

I wouldn't worry about the 22 cfm spec, I think that might just be the cfm used for the 1/2 second that you are breaking the bolt free, or the last 1/2 second of tightening it. I think the important spec is the avg. cfm. How often are you going to use it? Occasionally, or all day/everyday? I've got the 2131QT http://www.sears.com/sr/javasr/produ...tive+Air+Tools that I run off a Dewalt framing compressor that's only 4 gal, but has 4.5 cfm @ 100psi. The compressor has no problem keeping up, but it will run alot since it's only a 4 gal tank. I only use the wrench occassionally, so that doesn't bother me, I just put the compressor around the corner and run a long hose, so I don't go crazy from the noise. Hope this helps.

Cameron

Tools R Us · 09-03-05, 01:28 PM

Impacts are used intermittently, unlike sanders, grinders, etc., the full load CFM is provided to setup airline and fittings, they must have enough flow to deliver the burst of air needed to break bolts loose. IR 1/2" impacts will work, but won't make full power on 3/8" line and 1/4" quick disconnects. If you use this setup, use the shortest line possible and the fewest 1/4" disconnects possible, preferably only one at the tool, if you need a disconnect on the other end of the hose a 1/2" one is better.

IH8Wood · 09-03-05, 10:30 PM

Thanks for alll the info. Use will be occasional, so as much as I'd love to run a T30 compressor, I'm going for something smaller.

09-02-05, 11:48 PM	#1
IH8Wood IH8MUD Regular Join Date: Dec 2004 Location: Altadena CA TLCA# 15015 Posts: 391	Impact Wrench Specs I'm looking at the specs for an IR 213C impact wrench here: http://www.irtools.com/IS/modelComp_...61,862,311,219 It shows that the "Av. Air Consump. cfm" to be 4.2, and the "Min. @ load cfm" to be 22. What's the 22cfm? It seems like it would take a lot of compressor to sustain that flow.

09-03-05, 04:56 AM	#2
ff347 IH8MUD Regular Join Date: Nov 2004 Location: UPSTATE SOUTH CAROLINA TLCA# 16921 Posts: 369	To get the potential use out of it, I would say that a two stage 80 gallon compressor is what you would want. IR T30, something in that neighborhood, of course the use/duration matters alot. scott __________________ And the plot thinnens....................... In four seconds everything is gonna look a little different 100 and a 60

09-03-05, 01:28 PM	#4
Tools R Us IH8MUD Lifer Join Date: Jul 2004 Location: Chandler, AZ Posts: 6,162	Impacts are used intermittently, unlike sanders, grinders, etc., the full load CFM is provided to setup airline and fittings, they must have enough flow to deliver the burst of air needed to break bolts loose. IR 1/2" impacts will work, but won't make full power on 3/8" line and 1/4" quick disconnects. If you use this setup, use the shortest line possible and the fewest 1/4" disconnects possible, preferably only one at the tool, if you need a disconnect on the other end of the hose a 1/2" one is better. __________________ Kevin Patterson '96 LX450 '84 4x4 Mini '73 FJ40 Copper State Cruisers #007 "We have come to the conclusion that we can run our car over any road that a man can take a team of horses and a wagon, providing we can get traction." Dr. Horatio Nelson Jackson, 1903

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09-03-05, 08:47 AM	#3
FJ60Cam IH8MUD Addict Join Date: Nov 2004 Location: Memphis, TN TLCA# 16341 Posts: 960	I wouldn't worry about the 22 cfm spec, I think that might just be the cfm used for the 1/2 second that you are breaking the bolt free, or the last 1/2 second of tightening it. I think the important spec is the avg. cfm. How often are you going to use it? Occasionally, or all day/everyday? I've got the 2131QT http://www.sears.com/sr/javasr/produ...tive+Air+Tools that I run off a Dewalt framing compressor that's only 4 gal, but has 4.5 cfm @ 100psi. The compressor has no problem keeping up, but it will run alot since it's only a 4 gal tank. I only use the wrench occassionally, so that doesn't bother me, I just put the compressor around the corner and run a long hose, so I don't go crazy from the noise. Hope this helps. Cameron

09-03-05, 10:30 PM	#5
IH8Wood IH8MUD Regular Join Date: Dec 2004 Location: Altadena CA TLCA# 15015 Posts: 391	Thanks for alll the info. Use will be occasional, so as much as I'd love to run a T30 compressor, I'm going for something smaller.