SKU: 17147032484

DEWALT Cordless Angle Grinder DCG400B 20V MAX ATOMIC 4 Inch Brushless Tool (755 MWO 12500 RPM Paddle Switch Metal Cutting Weld Grinding Bare Tool)

Sale price$134.55 Regular price$149.50
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Ships within 48 hours · Estimated delivery Aug 3 - Aug 8

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Description

DEWALT Cordless Angle Grinder DCG400B 20V MAX ATOMIC 4 Inch Brushless Tool (755 MWO 12500 RPM Paddle Switch Metal Cutting Weld Grinding Bare Tool)High Velocity Compact Metal Fabrication and Surface Conditioning The DEWALT DCG400B ATOMIC 20V MAX 4 Inch Angle Grinder is a compact battery powered metalworking tool engineered to deliver 755 MWO and a 12,500 RPM no load speed for heavy duty cutting and grinding. This cordless power tool features an advanced brushless motor that replaces 0. 7 HP pneumatic alternatives while reducing overall tool weight to 4. 34 pounds for enhanced maneuverability.

High Velocity Compact Metal Fabrication and Surface Conditioning

The DEWALT DCG400B ATOMIC 20V MAX 4-Inch Angle Grinder is a compact battery-powered metalworking tool engineered to deliver 755 MWO and a 12,500 RPM no-load speed for heavy-duty cutting and grinding. This cordless power tool features an advanced brushless motor that replaces 0.7 HP pneumatic alternatives while reducing overall tool weight to 4.34 pounds for enhanced maneuverability. The system incorporates an integrated electronic safety brake and an anti-rotation mechanism to protect operators from reactionary torque during wheel pinches or stalls in confined spaces.

**Battery and charger sold separately.

Best Used For:

  • Structural Metal Cutting: Slicing through structural steel angles, rebar, threaded rods, and sheet metal panels with high-speed precision.
  • Industrial Weld Grinding: Smoothing heavy weld beads, removing slag, and beveling pipe edges prior to structural joining.
  • Surface Prep Conditioning: Stripping rust, scale, and paint from metal plates using standard wire cups or abrasive flap discs.

Key Performance & Safety Features

  • Anti-Rotation Safety System: Sensors detect aggressive wheel binding or pinching to immediately cut power, minimizing tool twist.
  • Rapid Electronic Brake: Automatic braking assembly forces the abrasive wheel to a complete stop in less than 1.15 seconds upon trigger release.
  • Convertible Guarding System: Includes a Type B grinding guard alongside a tool-free Type A clip-on guard for rapid cutting transitions.
  • Paddle Switch Architecture: Ergonomic paddle trigger integrates a safety lock-off mechanism without a lock-on option to prevent accidental startup.
  • Forward Exhaust Porting: Vent paths route spent internal cooling airflow and structural debris entirely away from the operator's face.

What's Included

  • (1) DCG400 ATOMIC 20V MAX 4-in. Angle Grinder (Bare Tool)
  • (1) Wrench
  • (1) Type B Guard
  • (1) Type A Clip-on Guard
  • (1) 1/16 in. Type 1 Wheel
  • (1) 1/8 in. Type 1 Wheel

Technical Specifications

Tool Power Type Cordless / Battery Powered
Voltage 20V MAX
Motor Type Brushless
Wheel Diameter 4 Inches
Max Speed (No Load) 12,500 RPM
Max Power Output 755 MWO
Switch Type Paddle Switch with Lock-Off
Brake Engagement Time < 1.15 Seconds
Guard Configurations Type A (Cut) & Type B (Grind)
Assembled Weight 4.34 lbs.
Assembled Length 11.8 Inches
Pro-Tip: Always match the guard to the application; use the Type A clip-on guard for abrasive wheel cutoff tasks to redirect flying sparks and fragments away from yourself, and swap to Type B for surface face grinding.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 17147032484

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★★★★★ 5
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Color: Single Slat Gloss Black, Size: 2019-2022 G20, Color: Single Slat Gloss Black, Size: 2019-2022 G20
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Reviewed in the United States on May 29, 2025
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GKRetired
San Leandro, US
★★★★★ 5
Good quality
The material is very sturdy and came rolled up. Left it on the kitchen counter for a week with weight on it to get it close to flat. When installing there are about 3 predrilled holes in the mat. You have to drill into the floor board to install provided clips which is fine, but I had extra clips so I drilled additional holes in both sides to get the malt flush. I like the mats.
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Reviewed in the United States on March 3, 2026
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Mike M.
Dallas, US
★★★★★ 5
A plus
I am extremely happy with these mats. Perfect fit and well made at a good price.
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Reviewed in the United States on March 3, 2026
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Paul Pryor
Fort Morgan, US
★★★★★ 4
Fit perfectly!
The only complaint was they are shipped rolled up. Have to let them set out in the sun all day to flatten out. They're not rubber! More like a WeatherTech floor mats in a vehicle. Had plastic rivets to mount them to the floor, but wasn't drilling holes in a brand new buggy......
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Reviewed in the United States on May 9, 2023
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victor gonzalez
Louisville, US
★★★★★ 5
Fits like a glove
Style: Gloss Black Single Slat, Size: G20(2019-2022), Style: Gloss Black Single Slat, Size: G20(2019-2022)
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Reviewed in the United States on December 27, 2024

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