3/4" Impact gun & air supply

[olds442rocket]

Still looking to get a 3/4" impact gun for use in shop but most require a 1/2" air hose. I only have 3/8" air lines. Does anyone else use 3/8" lines on 3/4" impact? Is it preferred to use 1/2" or truly required? I won't use the impact all the time, just when I need it for those sob jobs which seems to be more and more, though.

 

[PAToyota]

If you really need the power of a 3/4" impact, the 3/8" lines are going to limit that power. Personally, my IR2135QTiMax 1/2" impact hasn't failed me yet.

 

[Moose-LandTran]

If you really need the power of a 3/4" impact, the 3/8" lines are going to limit that power. Personally, my IR2135QTiMax 1/2" impact hasn't failed me yet.

Yeah, that's the thing to do. i have two of them and i've yet to come across a bolt (except those on commercial trucks and machinery) that they can't handle. you won't find a bolt on a car/truck that they can't undo.

 

[goodfellow]

I have an old 70's vintage 3/4" impact. To make it work efficiently, I have an additional 3/8" coupler on one of my air drops. I plug a 3/8" hose into the 3/8" coupler and and I'm good to go.

So far I'm pretty happy with the setup -- I use that wrench about a dozen times a year.

 

[Charles (in GA)]

At work our 3/4 impacts that we get from the tool room have standard ******* on them like the rest of the air tools. We use 1/4 and 3/8 hoses. The 3/4 impact works on the 1/4 hose but not real well. Plug a 3/8 hose on it and it works fine. While the ****** and coupler represent a restriction, it is not great as it is short. Long 1/4 hoses create huge restrictions, but you would be surprised at how much air you can shove thru a restriction that is short in length. I have a "doubler" that is made of 1/4 pipe fittings. one coupler and two ******* on it. You hook two air hoses on it and plug it on the impact and it works great. Of course, this is in a huge facility where there are air fittings everywhere and a seemingly endless supply of air.

Charles

 

[blue302stang]

i work on small commercial trucks and we just use a reducer on the impact and use standard 1/4npt air fittings and it seems to work just fine with that

 

[Steve in Mi]

Of course, this is in a huge facility where there are air fittings everywhere and a seemingly endless supply of air.
Charles

Makes me wonder why they don't spring for some 1/2" hose

 

[gofastman]

If you really need the power of a 3/4" impact, the 3/8" lines are going to limit that power. Personally, my IR2135QTiMax 1/2" impact hasn't failed me yet.

same here, best impact tool ever!

 

[crbracing]

same here, best impact tool ever!

2nd If you go with a 3/4 gun and a 3/8 hose i would go with the milton high flow v stile fitings i noticed a difernce with my 2135qtimax and cut off whel and other high demand air tools with the v stile fitings vs a standerd 1/4 air fiting.

 

[Charles (in GA)]

Makes me wonder why they don't spring for some 1/2" hose

Just don't need it. The 3/8 hose supplying standard 1/4 industrial interchange ******* and couplers work fine. 3/8 hoses are not popular in the hangar, they are way too cumbersome to use on screw guns, 3/8 impacts for removing screws, and rivet guns, the main use for the air, so if I cannot find a 3/8 hose, I just grab the two 1/4 hoses (if one won't do the trick) and use my doubler.

We do have 3/4 hose and huge couplers that we use to supply air pigs. The pigs are pieces of about 3" square heavy wall tubing with one end welded closed, the other end has a ****** for that huge coupling and has a couple of rows of standard air couplings along the sides. There is air running everywhere. Our 1" drive impacts use the 3/4 hose, and I've only had to use these a couple of times in the near 20 years I've been doing this work.

Charles