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Electric impact guns - any good?

Old 02-11-2020, 09:11 AM
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Default Electric impact guns - any good?

After having to change another tire on my old truck with frozen lug nuts, I am now ready to shell out for an impact gun to it easier.

Question: Are the battery operated ones any good? I am thinking specifically of this one, since I already have the batteries/charger:





Will this work? Or is it just going to prove to be a frustrating way to not be able to get off lug nuts, or not be able to properly torque them back on?

I assume if this doesn’t work then I need an air operated version.

Any advice appreciated, thanks.
Old 02-11-2020, 09:15 AM
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Really good. I've used the 1/2" & 3/4" Dewalt 20V, and also own the 18V Riobi. Both work really well for vehicle/trailer tires. Dewalt 3/4" drive will change tractor trailer tires with ease. For a regular pickup & boat trailer, I would go 1/2" personally.

If this will be your only cordless and you aren't matching up to an existing battery platform, the Milwaukee fuel series is the best on the market, but hardly necessary for occasional use.
Old 02-11-2020, 09:18 AM
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Ive got that exact one and its a beast! Def go with this hog ring style instead of the detent pin style for longevity.
Old 02-11-2020, 09:39 AM
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There’s no way that would work on all of the rusted out bolts I work on here in the northeast.

“high torque” huh. What’s the specs? and for how long? I have a 1070 ft-lb. air impact wrench that sometimes takes 30 seconds of hammering to get a bolt unstuck.

So I guess it all depends on what you’re going to use it for. Projects around the house? Fine. Automotive? Hell no.
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Old 02-11-2020, 09:44 AM
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Unless you have a lot of DeWalt battery stuff get the Milwaukee Fuel. I run those tools in a construction environment daily and they hold up. The 3/8 and 1/2 impacts will wring a bolt off if you don’t pay attention. As for rusted nuts, I’d be sure to put some penetrating lube on them first and let it soak in good.
Old 02-11-2020, 09:45 AM
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They work great, even if u have to break the frozen ones loose first with a breaker bar. I always use never seize on all my trucks and trailers. Never had a problem since.
Old 02-11-2020, 09:48 AM
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Have a Dewalt DCF 896P2 20V 1/2" impact, works well.
Have not had any issues removing wheel nuts, from time to time I have to use an air impact for things like crankshaft bolts etc.
It is a little different than an air impact, it pounds the nut a little slower, so you have to be a little patient at times.
Keep it in your truck with the appropriate sockets and some day you will be really glad you bought it.
Good luck.
Old 02-11-2020, 10:00 AM
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I've got a Milwaukee I bought refurbished from their factory store and it's superior to my air impact, it hits hard.
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Old 02-11-2020, 10:12 AM
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Guy at the tire store used a battery unit to put my wife's tire back on after patching a hole. I watched him do it. He didn't even hit it that hard, actually I thought in my head, man I'm not sure those are tight.... A few weeks later after changing her oil I go to rotate her tires... My air impact would NOT take the lugs off of that tire. I had to get a breaker bar to loosen them.... This is in the south, so no rust/salt...etc, good clean lugs.

I love my air tools but I was REALLY impressed with the torque his battery unit put out.
Old 02-11-2020, 10:34 AM
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I have a 2 craftsmen 1/4" hex drive, a Milwakee 1/4" hex and 3/8" and a Snapon 3/8" love them all and work the piss out of them all.
Old 02-11-2020, 10:37 AM
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Originally Posted by rustybucket View Post
Guy at the tire store used a battery unit to put my wife's tire back on after patching a hole. I watched him do it. He didn't even hit it that hard, actually I thought in my head, man I'm not sure those are tight.... A few weeks later after changing her oil I go to rotate her tires... My air impact would NOT take the lugs off of that tire. I had to get a breaker bar to loosen them.... This is in the south, so no rust/salt...etc, good clean lugs.

I love my air tools but I was REALLY impressed with the torque his battery unit put out.
And that guy is an ass hat. All wheels should be hand tightened with a calibrated torque wrench. Period!

I have to repair so many wheel studs for the tire shop around the corner for me al the time... They can warp rotors too...
Old 02-11-2020, 10:43 AM
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Originally Posted by Misterfu02 View Post
There’s no way that would work on all of the rusted out bolts I work on here in the northeast.

“high torque” huh. What’s the specs? and for how long? I have a 1070 ft-lb. air impact wrench that sometimes takes 30 seconds of hammering to get a bolt unstuck.

So I guess it all depends on what you’re going to use it for. Projects around the house? Fine. Automotive? Hell no.
1200 ft/lb breakaway torque on that particular model
Old 02-11-2020, 10:49 AM
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Originally Posted by FL Bill View Post
And that guy is an ass hat. All wheels should be hand tightened with a calibrated torque wrench. Period!

I have to repair so many wheel studs for the tire shop around the corner for me al the time... They can warp rotors too...
This is very true. Nothing wrong with gently running lugs down with the impact to seat them, but they should be torqued by hand with a torque wrench.
Old 02-11-2020, 10:50 AM
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Originally Posted by kawakx125 View Post
1200 ft/lb breakaway torque on that particular model
Yeah, but it’s only rated for 700 ft lbs max. The air impact I have is almost 1100.

How long will that torque figure exist on a single charge when changing four tires with rusty lugs?
Old 02-11-2020, 10:53 AM
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The bigger problem is the frozen lug nuts. If they are getting froze up regularly, then you need to make a habit of cracking them loose and lube them on a schedule. Water getting in the threads causing rust?
Old 02-11-2020, 10:59 AM
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Originally Posted by Misterfu02 View Post
Yeah, but it’s only rated for 700 ft lbs max. The air impact I have is almost 1100.

How long will that torque figure exist on a single charge when changing four tires with rusty lugs?
Lithium Ion doesn't lose power like older NiCad batteries. Basically works full tilt, then dies.

Yes, air, particularly once you step up to 1" stuff is stronger. But a 3/4" cordless is plenty sufficient for most needs, and a whole heck of a lot faster/more convenient for doing general maintenance. They have no issue with lugs on a properly maintained tractor trailer. Large size battery can pull all 8 drives and put them back on with no issue on a single charge if you have one of the bigger batteries.
Old 02-11-2020, 10:59 AM
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Originally Posted by Misterfu02 View Post
Yeah, but it’s only rated for 700 ft lbs max. The air impact I have is almost 1100.

How long will that torque figure exist on a single charge when changing four tires with rusty lugs?
With a 5ah battery it’ll do it and not break a sweat. Most tools come with the 2ah batteries but those are for light duty. The 5 and 9ah batteries will do work and last. I’d rather have the 5’s though, Milwaukee has had issues with the 9ah lifespans.
Old 02-11-2020, 11:54 AM
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Originally Posted by Misterfu02 View Post
Yeah, but it’s only rated for 700 ft lbs max. The air impact I have is almost 1100.

How long will that torque figure exist on a single charge when changing four tires with rusty lugs?
for tightening. 90% of my impact usage is to remove bolts/nuts, not to tighten them. I may seat them with one, but final torque is not left up to the impact
Old 02-11-2020, 04:37 PM
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1/2" M18 fuel is 700 ft/lbs tighten, 1100 ft/lbs loosen, last week I picked up a factory recond with 2 Red 5.0 XC batteries for $279. Haven't had anything really rusty yet, but standard SUV lugs are easy.
Old 02-11-2020, 05:01 PM
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To the OP, yes they r worth it
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