DEWALT 20V MAX Cordless 4.5 in Paddle-Switch Grinder Bare Tool DCG408B

Overview

Meet the DEWALT 20V MAX Brushless Cordless 4.5 in Paddle-Switch Grinder, model DCG408B. This bare tool handles complete grinding applications on site with a steady speed under load. The efficient brushless motor works with overload protection to maintain performance through tough metalwork and maintenance tasks. It supports 4- to 5-inch wheels and ships with both Type A and Type B guards to help meet 62841 compliance. A mesh screen helps keep debris from entering internal components, extending tool life in harsh conditions. The paddle switch enables straightforward start and stop, so you can focus on positioning and control rather than wrestling with a trigger.

Key performance details include a brushless motor capable of up to 850 MWO and a no-load speed up to 9,000 RPM, plus the ability to preserve speed under load for a more consistent grind. The tool weighs 3.55 lb in bare tool form, which contributes to reduced fatigue during extended use. The design emphasizes versatility and durability for demanding daily tasks on the jobsite.

What makes this grinder practical on site

• Run time and performance: constant speed under load with high torque output
• Protection features: overload protection, Kickback Brake, and E-Clutch anti-rotation
• Guard compatibility: includes both Type A and Type B guards for 62841 compliance
• Debris protection: mesh screens help prevent debris intrusion
• Control: paddle-switch operation for easy start and stop
• Wheel compatibility: supports 4 in. to 5 in. discs and wheels

On the job, cordless convenience shines through without sacrificing control. The mesh screening, dual guards, and anti-rotation safety features are designed to support varied tasks from material prep to deburring, allowing you to adapt to different workpieces and angles while maintaining a comfortable grip and posture.

Real-world use and endurance

Real-world use cases include fabricating and preparing metal parts, deburring welds, and finishing edges on scaffolds or racks. The device is designed to handle repetitive, demanding grinding sessions, with the stated capability of up to 56 cuts of 1/2 inch rebar under typical conditions. The 4 to 5 inch wheel range provides flexibility for light material removal or more aggressive stock removal as needed.

Designed for durability and user comfort, the DCG408B is intended to pair with your existing 20V MAX battery stock (battery and charger sold separately). Its lightweight form, balanced feel, and easy access to the paddle switch are aimed at helping you stay productive through long days on site. While results vary by material and disc choice, this grinder offers a capable option for professionals who need a cordless solution without compromising performance.