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DCG402B

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

A close-up view of a DEWALT cordless angle grinder with a black and yellow design. The tool features a textured side handle for grip and a battery compartment at the back.

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Product details

Complete high-powered applications in tight spaces using the ATOMIC™ 20V MAX* Die Grinder with Lanyard Ready™ Attachment Point (battery, charger, and lanyard sold separately). This tool 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. Featuring a Lanyard Ready™ Attachment Point, up to 445 MWO, and a maneuverable design, this grinder is ideal for working at height. Replace pneumatic die grinders with the ATOMIC™ 20V MAX* Die Grinder with Lanyard Ready™ Attachment Point that delivers untethered performance, productivity, and pneumatic-like power“ .

* *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

NA556885_DCG400_DCG402_T1_NA.pdf
PDF

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ATOMIC™

WHERE SIZE MEETS POWER™

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

A DEWALT cordless angle grinder is placed on a metal workbench in a workshop. A person wearing dark clothing and gloves is holding a metal pipe, with various metal parts and tools visible on the table.
A worker using a DEWALT angle grinder to cut a metal pipe, producing sparks in an industrial workshop setting.
A person wearing a face shield, gloves, and a brown apron is using a DEWALT angle grinder to work on a metal piece, generating sparks. Another DEWALT tool is resting on the table nearby. The scene takes place in an industrial workshop.

Ergonomic design

Up to 29% smaller†† for access into ultra tight spaces.

A person wearing a face shield, gloves, and a brown apron is using a DEWALT angle grinder to work on a metal piece, generating sparks. Another DEWALT tool is resting on the table nearby. The scene takes place in an industrial workshop.
A person wearing protective gloves and clothing is using a DEWALT cordless angle grinder to cut through a metal pipe, creating sparks in a workshop setting.

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.

Graphic with a yellow background stating 'BATTERY AND CHARGER NOT INCLUDED' in bold black and white text.

Bare tool notice

This item does not include a battery or charger. Compatible batteries and accessories can be found within the ATOMIC™ 20V MAX* system.

Graphic with a yellow background stating 'BATTERY AND CHARGER NOT INCLUDED' in bold black and white text.
A collection of DEWALT yellow and black power tools arranged in rows against a concrete wall, including drills, saws, grinders, and cordless tool batteries.
Centered on a white background, there is a small DEWALT logo.
Logo for the ATOMIC COMPACT SERIES by DEWALT, featuring bold white and yellow text on a black background.

ATOMIC™

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

Explore systemBatteries & chargers

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