Dewalt has launched new 20V Max cordless grinders that they say were built to change the way you work.
There are four new Dewalt Atomic 20V Max grinders, all with brushless motors: 4″ angle grinder, 4-1/2″ angle grinder, die grinder, and right angle die grinder
Dewalt says “stop being limited by cords and air hoses,” and that their new Atomic series cordless grinders feature a compact size and more power than pneumatic grinders.
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The brand says that these are “a major industry breakthrough,” and that they “are changing the game with innovative cordless control and consistency.”
Here’s what’s launching soon:
Dewalt DCG400 4″ Angle Grinder
Dewalt says that the new 4-inch angle grinder delivers up to 44% more power compared to 0.7 HP air angle grinders.
Dewalt DCG402 4-1/2″ Angle Grinder
Dewalt says that the new 20V Max Atomic 4-1/2″ cordless angle grinder is 29% smaller than their non-XR brushless angle grinder, model DCG408, which launched earlier this year.
Dewalt DCG420 Die Grinder
Dewalt says their new Atomic cordless impact driver is 45% smaller than Milwaukee’s M18 die grinder.
If you look at the fine print, Dewalt says that their new DCG420 die grinder is 45% smaller than the Milwaukee 2784-20 die grinder.
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The 2784 launched nearly 9 years ago – see New Milwaukee M18 Fuel Brushless Die Grinder.
Milwaukee replaced that model 3 years ago – see New Milwaukee M18 Fuel Gen-2 Cordless Die Grinders.
Dewalt also says that their new Atomic 20V Max die grinder delivers up to 2X the power compared to Milwaukee’s M12 Fuel model (see New Milwaukee M12 Fuel Straight Die Grinder).
Dewalt DCG422 Right Angle Die Grinder
Dewalt says that their new DCG422 delivers up to 53% more power compared to the Milwaukee M12 3485-20.
The 3485 is the latest M12 Fuel right angle die grinder, which launched this year – see Milwaukee M12 Fuel Right Angle Die Grinder got an Upgrade.
Common features across all of the models include:
- Dewalt Perform & Protect anti-rotation
- Electronic brake
- Variable speed trigger switches
- Fast guard and wheel changes (DCG400, DCG422 only)
- Air tool-like paddle switch
- Forward exhaust system
- LED light (DCG420, DCG422 only)
- Tool Connect Chip Ready
Pricing and availability details are not yet available for any of the new tools.
Jared
Excellent. Those seems like very handy additions to the lineup to me. They’re obviously an alternative to a 12v tools.
I bought the Bosch 12v right angle die grinder because Dewalt didn’t have one. I probably would have chosen this one if it existed at the time – and now that I’m working on replacing my cordless tools after my garage fire… I imagine I will.
Doresoom
I found SB&D’s patent for this type of motor earlier this year: https://patents.google.com/patent/US20250219493A1/en
They’ve been developing it for quite a while – their first related filings were back in 2022!
EBT
About the DCG422, I wish Dewalt would fix their load times (cache hardware, Dewalt hosting!) of their product site, and that there is no information on the weight. Used a neighbor’s M12 rightangle die grinder with the smaller battery and it was a no-brainer to use. But with the larger battery, you fatigue before the battery runs out. So, I don’t care about the 53% more run time than the competition…I care about specs and missing is weight w/o battery and with (XR 20V 3.5Ah).
(Dewalt lists the B version which is the non-kit version – B for Bare tool)
NoDak Farming
I’m really liking the form factor and compactness of these tools. Especially that die grinder. I hope every single other cordless tool manufacturer see’s these, and notices what Dewalt has done. And then I hope those companies try to compete with these tools. (Not over night obviously. But eventually)
MM
Nice to see these hitting the market finally. I am very interested in the DCG422.
fred
“Dewalt says that the new 4-inch angle grinder delivers up to 44% more power compared to 0.7 HP air angle grinders.”
That sounds impressive – but then I looked at the specs for the Cleco 4.5-inch angle grinder we used – and Cleco claims 1.7HP – not 0.7HP. There are many pneumatic angle grinders in the 0.7 to 0.8HP class – so the comparison is still valid – just not compared to a heavy-duty air grinder. The price is certainly attractive compared to a Cleco – and I can certainly see the Dewalt getting used for field work and smaller shop jobs where full-production mode of an air grinder is not needed.
fred
Since price is not yet announced – I should have said that the price is likely to be attractive compared to a $1200 Cleco
Matt_T
Pretty sure these are targeted towards mechanics so I’d say the 0.7HP comparison is fair.
For shop use Dewalt have several corded brushless grinders. They’d be way cheaper to run than industrial air grinders, and probably quieter too. Unlikely they’d last as long as air though….