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DCG400S2

DEWALT® ATOMIC™ 20V MAX* 4-in. Angle Grinder Kit

A DEWALT tool kit including a black and yellow carrying bag, a cordless power tool, a battery charger, and two batteries displayed in front.

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Product details

Complete high-powered applications in tight spaces with the ATOMIC™ 20V MAX* 4 in. Angle Grinder Kit that delivers optimized maneuverability and 755 MWO. This unit is equipped with the DEWALT® ANTI-ROTATION System to help maximize control. This feature quickly stops the wheel when a pinch, stall, or bind-up event is sensed, reducing reactionary torque. An ergonomic design allows this tool to access ultra tight spaces, while the clip-on guard can quickly convert a Type B guard into a Type A guard. Featuring (2) XR® batteries, this cordless solution delivers untethered performance, productivity, and pneumatic-like power“ .

  • DEWALT's First Cordless 4 In. Angle Grinder - Get cordless convenience and unprecedented performance from our first cordless 4 in. angle grinder compatible with standard 4 in. x 3/8 in. and 4 in. x 5/8 in. accessories (sold separately).
  • Help Maximize Control - Equipped with the DEWALT® ANTI-ROTATION System. This feature quickly stops the wheel when a pinch, stall, or bind-up event is sensed, reducing reactionary torque. The switch needs to be cycled (turned on and off) to restart the tool.
  • Electronic Brake - Help maintain control with the electronic brake designed to stop the wheel within 1.15 seconds** after the on/off trigger is released.
  • Ergonomic Design - Complete applications with a slim, ergonomic design that's 13% lighter than a competitive pneumatic angle grinder in use“ “  for access into ultra tight spaces without sacrificing power.
  • Fast Guard Changes - Quickly convert your standard Type B guard into a Type A guard with a clip on guard.
  • Up To 44% More Power Than 0.7 HP Rated Pneumatic Angle Grinders“  - Work fast and help optimize productivity.
  • Easy Wheel Changes - Change wheels quickly with the spindle lock that removes the need for multiple wrenches.
  • Brushless Motor Performance - Take on demanding applications with 755 MWO and 12,500 (no load) RPM.
  • Paddle Switch - Replicate the power performance of 0.7 HP rated pneumatic angle grinders with this 4 in. angle grinder that has a lock off paddle and no-lock on features.
  • Forward Exhaust System - Direct air away from the user with an exhaust system that helps prevent overheating from the motor.

Product Type
Angle Grinder
Voltage
20 V
Cordless or Corded
Cordless
Power Source
Battery
Tool Only
No

  • (1) DCG400 ATOMIC™ 20V MAX* 4 in. Angle Grinder
  • (1) DCBP320 20V MAX* XR® 3.5Ah Batteries
  • (1) DCB118 Charger
  • (1) Type B Guard with Type A Clip-on Guard
  • (1) 1/16 in. Type 1 Wheel
  • (1) 1/8 in. Type 1 Wheel
  • (1) 3/8 in. and 5/8 in. Outer Flanges
  • (1) Reversible Inner Flange
  • (1) Wrench
  • (1) Kit Bag

  • 3 Year Limited Warranty, 1 Year Free Service, 90 Days Satisfaction Guaranteed

We take extensive measures to ensure all our products are made to the very highest standards and meet all relevant industry regulations.

Customer Support

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

* ** On average using 1/16“ T1 DW8716 wheel.

* †Based on MWO using DCBP320 battery

* ††Measured with DCBP320 battery vs. PATCO GAL-1340-1 with 4“ of connected 1/2“ diameter hose and equal accessories. PATCO™ is a trademark of Patco Air Tools, Inc., which has not endorsed, approved, or sponsored this comparison.

* ‡Additional subscription charge and third-party data charges may apply.

Downloads and manuals

NA556885_DCG400_DCG402_T1__NA.pdf
PDF

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WHERE SIZE MEETS POWER™

Discover compact tools engineered for maximum performance. DEWALT® ATOMIC™ tools deliver the strength you demand without the bulk.

A person wearing protective gloves and a face shield is using a yellow DEWALT cordless angle grinder on a green metal pipe in an industrial workshop setting.
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A person wearing protective gloves using a DEWALT cordless angle grinder to work on a metal surface, with sparks visible from the grinding process.

Ergonomic design

Up to 13% lighter and 28% shorter length than a competitive pneumatic angle grinder in use†† for access into ultra tight spaces without sacrificing power.

A person wearing protective gloves using a DEWALT cordless angle grinder to work on a metal surface, with sparks visible from the grinding process.
A person wearing protective gloves and a work jacket is using a DEWALT cordless angle grinder to cut or grind a large metal pipe, with sparks flying from the tool.

Help optimize productivity

Replace pneumatic angle grinders with this cordless solution that delivers untethered performance, productivity, and up to 44% more power than 0.7 HP rated pneumatic angle grinders†

A worker wearing protective gear and a face shield is using a DEWALT cordless tool, possibly a grinder, at an outdoor industrial site. There is a DEWALT tool case on a table nearby and several steel beams in the background.

Tools on the move

Keep moving and go from jobsite to jobsite with lightweight tools that maximize portability.

A worker wearing protective gear and a face shield is using a DEWALT cordless tool, possibly a grinder, at an outdoor industrial site. There is a DEWALT tool case on a table nearby and several steel beams in the background.
A collection of DEWALT yellow and black power tools arranged in rows against a concrete wall, including drills, saws, grinders, and cordless tool batteries.

ATOMIC™

Designed to be compact and powerful for a wide range of applications, our ATOMIC™ 20V MAX* tools are WHERE SIZE MEETS POWER™.

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