Dewalt dcg400b 4 Inch Brushless Angle Grinder 20V

Product Description

The DEWALT dcg400b is a cordless angle grinder built around a brushless motor and a 20-volt DC power system. Designed for metal grinding, cutting, and surface preparation, the tool accepts a 4-inch wheel and features a standard head profile with a barrel grip configuration. The brushless motor delivers improved efficiency and longer tool life compared to brushed alternatives, making it a practical choice for electricians, HVAC techs, and general trade professionals who need a compact, battery-powered angle grinder on the job.

This grinder is suited for a range of trade applications including cutting conduit, grinding welds, removing rust, and light fabrication work. The 20-volt platform means it runs on DEWALT 20V MAX compatible batteries, which can also power other tools in the same battery ecosystem. Its compact standard head and barrel grip make it manageable in tight spaces typical of mechanical rooms, rooftops, and rough-in work.

Key Features

• Brushless motor for increased efficiency and extended motor life
• 4-inch wheel diameter for compact grinding and cutting applications
• 20-volt DC cordless operation via DEWALT 20V MAX battery platform
• Standard head profile keeps overall tool length low
• Barrel grip provides secure, two-handed control during operation
• Battery sold separately, compatible with existing 20V MAX tool inventory

Compatibility

Designed for use with DEWALT 20V MAX compatible batteries. The battery platform is shared across compatible DEWALT 20V MAX cordless tools.

Installation Notes

Installation of the wheel requires powering down the tool and removing the battery before mounting or changing any accessory. Wheel guards must remain in place during operation per standard tool safety requirements. Follow applicable OSHA and manufacturer guidelines for abrasive wheel tools, including inspection of the wheel for cracks or damage before each use. This tool should be operated by qualified trade personnel familiar with angle grinder safety procedures.

Technical Specifications

• Wheel Diameter: 4 inches
• Voltage: 20 volts DC
• Motor Type: Brushless
• Head Style: Standard
• Grip Type: Barrel Grip
• Power Source: Cordless (battery not included)

Standard Information

• Brand: DEWALT
• Manufacturer Part Number: dcg400b