The DCG400B is DEWALT's ATOMIC® 20V MAX* 4-in. brushless angle grinder for tight-space applications. It delivers 755 MWO and includes the ANTI-ROTATION System, which stops the wheel when a pinch, stall, or bind-up is detected. The clip-on Type A guard converts from a Type B guard without tools. The compact, ergonomic head accesses ultra-tight spaces. Sold as a bare tool; compatible with all DEWALT 20V MAX* batteries. Carries DEWALT's 3-year limited tool warranty.
What disc size does the DCG400B use?
The DCG400B uses 4-in. grinding and cutting wheels, making it one of the smallest angle grinders in DEWALT's cordless lineup and suited for work in confined areas.
Does the DCG400B have kickback protection?
Yes. The DCG400B includes DEWALT's ANTI-ROTATION System, which detects pinch, stall, or bind-up events and stops the wheel to reduce reactionary torque and risk of injury.
Is the DCG400B sold without a battery?
Yes. The DCG400B is a bare-tool configuration. It ships without a battery or charger. Any DEWALT 20V MAX* battery is compatible.
What is the difference between DCG400B and DCG400BLR?
The DCG400BLR adds a Lanyard Ready™ Attachment Point for working at height. Both share the same grinder body, disc size, and brushless motor. Choose the BLR variant for elevated work environments requiring tool tethering.
What is included with the DCG400B?
The DCG400B ships with the grinder, a wheel wrench, a Type B guard with a clip-on Type A guard, one 1/16-in. Type 1 wheel, and one 1/8-in. Type 1 wheel.
Can the DCG400B replace a pneumatic angle grinder?
DEWALT positions the DCG400B as a pneumatic replacement, citing its 755 MWO output, cordless freedom, and compact ATOMIC® form factor for applications where air hose access is inconvenient.
# DEWALT® 20V MAX* ATOMIC® 4 in. Angle Grinder (Tool Only) **Model:** `DCG400B` **Brand:** DEWALT **Category:** Angle Grinder > The DCG400B is DEWALT's ATOMIC® 20V MAX* 4-in. brushless angle grinder for tight-space applications. It delivers 755 MWO and includes the ANTI-ROTATION System, which stops the wheel when a pinch, stall, or bind-up is detected. The clip-on Type A guard converts from a Type B guard without tools. The compact, ergonomic head accesses ultra-tight spaces. Sold as a bare tool; compatible with all DEWALT 20V MAX* batteries. Carries DEWALT's 3-year limited tool warranty. ## Specifications | Attribute | Value | |---|---| | Product Type | Angle Grinder | | Voltage (V) | 20 | | Cordless / Corded | Cordless | | Power Source | Battery | | Motor Type | Brushless | | Tool Only | Yes | | Batteries Included | 0 | | Charger Included | No | | Piece Count | 1 | | Height (in.) | 4.49 | | Length (in.) | 11.8 | | Weight (lbs) | 4.34 | | Width (in.) | 6.77 | | Country of Origin | China | | Barcode (UPC) | 885911508131 | | Battery Platform | 20V MAX* ATOMIC® | | Disc Diameter In | 4 | | Warranty | 3-year limited (tool) | ## What's Included - (1) DCG400 ATOMIC™ 20V MAX* 4 in. Angle Grinder - (1) Wrench - (1) Type B Guard with Type A Clip-on Guard - (1) 1/16 in. Type 1 Wheel - (1) 1/8 in. Type 1 Wheel Source: https://www.jaspecs.com/dewalt/angle-grinder/dcg400b-dewalt-20v-max-atomic-4-angle-grinder-tool-only/