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Pneumatic Impact Wrench

Cobra Jet

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If you want air impacts get an IR 231, they just work. Add a drop of oil in the air fitting once every so often and they last a lifetime.

https://www.amazon.com/Ingersoll-231C-Super-Duty-Impact-Wrench/dp/B0002SRM3I
I have an IR similar to that, it’s at least a good 25+ years old and still operates as if it’s new… it’s been dropped many times, only maintenance is like you noted, just a drop of oil every so often…. It’s definitely a workhorse though, never an issue using it.

I’d like to get one of the newer battery powered impact wrenches for ease of use and being able to use one without the whole compressor/air for small jobs, but I’m still researching. Seems like Milwaukee has some good offerings…?
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Vlad Soare

Vlad Soare

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In the meantime I decided to bite the bullet and go for a more powerful cordless impact wrench.
While we can get Milwaukee here if we want to, DeWalt and Makita seem to be a bit more wide-spread, and I figured that in case of problems, warranty issues, need for accessories or spare parts, etc. I would be better off long-term with something that's a bit more present in the local market. Besides, as far as I can work out, the choice between these three seems to be more about personal preference than performance.
So I went with DeWalt.
The model I picked has a maximum torque of 1355 Nm, which should be more than enough for anything I might conceivably throw at it, ever. It's certainly much more than my air impact gun, which I believe is rated at 600 Nm or thereabouts.

Well, I tried it on a Mustang lug nut. I didn't even hear the impact, it just unscrewed it instantly, as if it hadn't been tightened to begin with. :shock:
Tried it again on another lug nut. The same.
For an instant I thought that my torque wrench may have been broken, and that maybe the lug nuts hadn't been torqued down correctly. :giggle:

I'm sold. It's cordless for me from now on. :inlove:

But still, there's something I don't quite get. The battery-powered gun is supposed to be maintenance-free. OK, I understand that the electric motor doesn't need any maintenance, as opposed to the air motor which needs a few drops of oil from time to time. Fair enough. But the actual impact mechanism, the hammer, is still the same regardless of how the motor is powered. If an air impact gun needs oil or grease added and/or changed from time to time inside the main chamber, in order to lubricate the hammer, how come an electric one doesn't?
 
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