Thanks for the excellent review Travis! I am very surprised to see that Mac has been able to get anywhere near the power of the 2763 or W7150. I do think you are correct when you say that there is no “industry standard” when it comes to torque testing, however I have confirmed with Milwaukee & Ingersoll Rand that they both use calibrated Skidmore-Wilhelm machines to verify torque ratings.

In my testing of both the 2763 & W7150, I believe that the power levels are so close they cannot be differentiated without scientific testing. In the real-world applications that I have put them up against, neither has failed at anything…….including the next-to-impossible Honda Crank Bolts. In the 2 reviews that I did, I showed each removing 2 Honda Crank Bolts with ease…..something that 95% of pneumatic impacts cannot do.

Looking at the numbers you listed for the Mac, it seems that this could be the 3rd impact out there that could achieve that….which is very encouraging, since it will only increase competition and innovation within the tool manufacturing community.

As far as the term “nut busting torque”, I thought this was some marketing scheme when I first heard it…..however, I have confirmed with both Milwaukee & Ingersoll Rand that in their testing of these units, they torque bolts to 1,100 ft-lbs with a calibrated torque wrench & the impacts WERE ABLE to remove those fasteners….so that is where they are coming up with that term.

Also, as far as the “forward torque” goes, I think that is extremely hard to measure in real-life, simply because no normal applications require anything near 700 ft-lbs. In the COPTOOL video, the 2763 & W7150 both hit 900 ft-lbs forward torque…..when I asked Milwaukee why this occurred, they told me flat-out that “the larger the fastener, more torque will be applied until it basically fuses the threads”. I unfortunately confirmed this unintentionally, because when I was testing the 2763 I wanted to see “how tight” I could make the nut on the trailer ball (1″ shank w/ 1 1/2″ nut)…..I hammered on it for 7-8 seconds & the threads literally fused together and ripped off of the shank & stripped out of the nut. So there really IS “too much power” when it comes to power tools. I hope instead of the companies focusing on more power, they switch over to focusing on longer run-times.

Great job Travis!

The Milwaukee is the heaviest at 6.2 lbs.

I think the advantage still goes to the Milwaukee here though. For any brushed tool, performance will diminish as the brushes wear. For a tool like a drill or a sawzall, that’s fine, don’t force the tool as much so while it takes a little longer, it still works a few years down the road. For an impact wrench though, the work you can accomplish with the tool will diminish. When that fastener won’t budge, no amount of extra time on the trigger will break it loose, and you’ll have to break out the breaker bar and some other tool to counteract the force (I’m thinking specifically crank pulley bolts, flywheel bolts, etc here).

I hope more mfgs bring out some brushless impact tools to challenge the Milwaukees, them just sitting on top doesn’t really give them incentive to put more R&D into the tool.