Ingersoll Rand W7150 1/2 In. 20 V High-Torque Impact Wrench – King of the Nut Busters


A few years back at SEMA we got our first glimpse of the new IQ20 cordless line and the W7150 from Ingersoll Rand.  While we didn’t get to test it, we did get to touch and feel it.  It stood out as a quality tool from its polished aluminum casing to its stout overall feel.  I can sum up the W7150 with one word “Power”.  It easily has the power of most pneumatics and is the most powerful cordless impact ever tested here at TIA.

When you first open the case of the W7150 you notice how nice everything is laid out. Secondly, you notice the shiny aluminum hammer housing.  It glows out at you like the suitcase in Pulp Fiction. The 7150 may not contour to your hand like the DeWALT 20V MAX line but it sure does feel nice.  The overall ergonomics of this tool are very comfortable and better than any pneumatic I have used.  It absorbs almost all the impact forces so your hand doesn’t have to. This will result in less user fatigue and better control.  Rubber over-mold was put in the right places and when you lay the tool down on its side you won’t mar the surface.

  • Max Forward Torque: 780 ft-lbs
  • Max Reverse Torque: 780 ft-lbs
  • Nut Busting Torque: 1100 ft-lbs

The 20v battery pack is a 3.0 Ah with a fuel status gauge on it. The battery release consists of squeezing the two side buttons and pulling.  The fit was tight and there was no sloppy rattling of the pack, it felt solid.  The charger is large which takes up bench space but also adds stability.  It has one of the coolest features we have seen on a charger, a USB charge port.  You can charge all your 5V USB devices like tablets and smart phones right from the charger.  The charger has a simple LED system to notify you the status of the charge and also beeps when finished.  Charge time is roughly 1 hour.

My only gripe with the W7150 is the lack of an LED light.  Light is a mechanics friend and is always needed.  The W7150 screams quality and is the top dog in the 18/20V market right now.  It is a quality tool that is built to last in the destructive automotive environment. It took on every nut and bolt that we threw at it.  If I were to only have one impact this tool would be my choice.

Length: 9.4″

Weight: 6.8 lbs

Warranty: 3 year

Pros – Most powerful in its class, rugged, 3 year warranty

Cons – No LED light, no 4.0 AH battery option





  1. Another cool tool to drool over Dan. Late in August I spent some money on the DeWalt Impact Wrench DCF889HM2) which is also a 1/2 in. drive monster. I went with this wrench for some fence work I did, plus mechanical stuff. Removing wheel nuts is fun with this tool, but I’m always iffy about tighting them up again. This thing is powerful, but heavy (12 lbs I think). The ergo’s are great & you’re right about the LED helping a lot. This wrench looks a lot lighter & light is not a big deal for me. I have the DeWalt 12v flashlight that goes under the cars with me everytime. Like always, thanks giving us options for every tool out there. Laters TIA

  2. Might be the king in claimed tq, but when tested against the Milwaukee 2763 on a torque measuring machine both put out the same 900ftlbs in forward.

    • The Milwaukee has the same power in forward and reverse, but the IR is reverse-biased. It’s more powerful in reverse than forward which is probably what most mechanics are after. I image most guys are using these guns for bolt removal rather than installation so reverse power is more important to IR.


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