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DCG402B

ATOMIC COMPACT SERIES™ 20V MAX* 4.5 in. Angle Grinder (Tool Only)

A close-up view of a DEWALT cordless angle grinder with a black and yellow handle, shown without a grinding disc attached.

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Product details

Complete high-powered applications in tight spaces with the ATOMIC COMPACT SERIES™ 20V MAX* 4.5 in. Angle Grinder (battery and charger sold separately) that delivers optimized maneuverability and up to 760 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.

  • 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 1.25 seconds** after the on/off trigger is released
  • Ergonomic Design - Complete applications with a slim, ergonomic design that has a smaller gripping diameter†† for access into ultra tight spaces
  • Fast Guard Changes - Quickly convert your standard Type B guard into a Type A guard with a clip on guard
  • Easy Wheel Changes - Change wheels quickly with the spindle lock, removing the need for multiple wrenches
  • Brushless Motor Performance - Take on demanding applications with up to 760 MWO and 11,000 RPM (no-load)
  • Paddle Switch - Designed with lock off paddle and no-lock on feature
  • Forward Exhaust System - Direct air away from the user with an exhaust system that helps prevent overheating from the motor
  • TOOL CONNECT™ CHIP READY™ - Pair the TOOL CONNECT Chip (sold separately) and DEWALT TOOL CONNECT app‡ for data on jobsite asset management and tool location
  • Where Size Meets Power™ - ATOMIC COMPACT SERIES™ power tools are part of the expanding DEWALT 20V MAX* system, offering size without compromise

Product Type
Angle Grinder
Voltage
20V
Cordless or Corded
Cordless
Power Source
Cordless
Tool Only
Yes

  • (1) DCG402 ATOMIC COMPACT SERIES™ 20V MAX* 4 .5 in. Angle Grinder
  • (1) Type B Guard with Type A Clip-on Guard
  • (1) Type 27 Grinding Wheel
  • (1) Wrench
  • (1) Side Handle

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

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

* **On average, using .045 T1 (DW8062) wheel (sold separately).

* ††Tool only based on volume vs. DCG408B Angle Grinder.

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

Downloads and manuals

Instruction Manual, Type 1
NA556885_DCG400_DCG402_T1_NA.pdf
PDF
Exploded Diagram, Type 1
NA701145_DCG402_T1_20250728.svg
SVG
Exploded Diagram, Type 1
NA701145_DCG402_T1_20260302.299944.svg
SVG

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