Skip to main content

Built to change the way you work

There are no limits to your job's demands. So, stop being limited by cords and air hoses. ATOMIC™ 20V MAX* grinders give you the freedom to work anywhere in a compact size and even deliver more power than pneumatic grinders**.
DEWALT® ATOMIC™ 20V MAX* Grinders Family Image
ATOMIC™ 20V MAX* 4 in. Angle Grinder completing pipe application

Powerful performance

For various applications, DCG400 delivers up to 44% more power than 0.7 HP rated pneumatic angle grinders***.

User grinding with ATOMIC™ 20V MAX* 4.5 in. Angle Grinder

Compact ergonomic design

Ideal for tight spaces, DCG402 is 29% smaller than the DEWALT® cordless 4.5 in. grinder‡.

ATOMIC right angle die grinder cutting tail pipe

Productivity and control

Part of the DEWALT® 20V MAX* System, the cordless design eliminates hoses for fewer restrictions and has a built-in anti-rotation control feature.

See for yourself how ATOMIC™ grinders are changing the game with innovative cordless control and consistency.

A major industry breakthrough

ATOMIC 20V MAX* GRINDERS TESTIMONIALS

From The Jobsite - ATOMIC™ 20V MAX* Grinders Testimonials

Grinders Testimonials

20V MAX* ATOMIC™ 4.5 in. Cordless Grinder (Tool Only)
DCG402B

DEWALT® 20V MAX* ATOMIC™ 4-1/2-in. Angle Grinder (Tool Only)

The freedom to work anywhere

ATOMIC grinder grinding metal

Weld Processing

Remove excess material, prep, and clean welds with control.

ATOMIC grinder grinding metal

Beveling and Deburring

Smooth plate and pipe edges for seamless welded connections.

ATOMIC grinder cutting metal

Cutting

Cut and prep plate, pipe, sheet, or tacks with precision, every time.

ATOMIC die grinder grinding pipe

Pipe Fabrication

Maneuver with ease to cut, prep, connect, and finish pipe assemblies.

Student using DEWALT ATOMIC grinder at Western Welding Academy

ATOMIC™ in action with Western Welding Academy

The students at Western Welding Academy tried out our game-changing lineup of ATOMIC™ 20X MAX* grinders and experienced the power and performance firsthand. Through hands-on training with our latest innovation, we aim to set the next generation of tradespeople up for success as they start their welding careers.

Learn more

Atomic™ 20V Max* grinders

ATOMIC™ 20V MAX* Die Grinder complete application in autobody shop

Promoting safe jobsites

Perform & Protect™

Designed to provide a high level of one or more of the following: dust containment, control, or low vibration, without sacrificing performance.

Learn more

Demand DEWALT®

Abrasives

DEWALT® offers a range of cutting and grinding accessories engineered to meet your high demands for performance and versatility.

Learn more
7 Elite Grinder Wheels shown in Group

*Maximum initial battery voltage (measured without a workload) is 20 and 60 volts. Nominal voltage is 18 and 54.

**Based on MWO, for the following DEWALT® Atomic™ cordless grinders vs. pneumatic grinders of specified rated HP. DCG400 (using DCBP320 battery) vs. 0.7 HP rated pneumatic angle grinders. DCG402 (using DCBP320 battery) vs. 0.88 HP rated pneumatic 4.5” angle grinders. DCG420 (using DCBP034 battery) vs. 0.5 HP rated pneumatic die grinders. DCG422 (using DCBP520 battery) vs. 0.5 HP rated pneumatic die grinders.

***Based on MWO using DCBP320 battery (sold separately).

‡ Tool only, based on volume vs. DCG408B Angle Grinder.