Dewalt DCG408B 20V MAX Brushless Cordless 4 1/2″ Paddle Switch Grinder, Tool Only

The DEWALT DCG408B 20V MAX Brushless Cordless 4-1/2″ Paddle Switch Grinder is built for grinding, cutting, and surface preparation tasks where control, mobility, and reliable output are important. Designed for use with 4-1/2″ wheels, this cordless angle grinder delivers the performance needed for metalworking, construction, maintenance, and repair applications. Its brushless motor is engineered to maintain constant speed under load, helping users stay productive during demanding work while reducing maintenance because there are no brushes to replace. With power output up to 850 MWO and a no-load speed of up to 9,000 RPM, this grinder is designed for common jobsite and shop tasks that require steady cutting and grinding performance.

As part of the DEWALT PERFORM & PROTECT lineup, the DCG408B includes ANTI-ROTATION features such as Kickback Brake and E-Clutch to help improve user control during stall or bind-up conditions. The paddle switch design adds another level of practical jobsite control by helping reduce accidental startups and allowing users to shut the tool off quickly when needed. Overload protection supports durability during heavy use, while mesh screens help block debris from entering internal components. With cordless operation and a compact handheld design, this 20V MAX grinder is a practical choice for contractors, fabricators, repair technicians, and advanced home workshop users who need a dependable cordless grinder for everyday use.

Dewalt 20V MAX Brushless Cordless 4 1/2″ Paddle Switch Grinder At a Glance

• Brushless Motor: Maintains constant speed under load and eliminates brush changes.
• Up to 850 MWO: Provides strong output for demanding grinding and cutting work.
• 9,000 RPM No-Load Speed: Supports efficient material removal and surface preparation.
• Paddle Switch Operation: Helps reduce accidental startups and allows quick shutoff.
• Kickback Brake: Helps stop the wheel quickly during pinch or bind-up events.
• E-Clutch System: Helps improve control during stall conditions.
• Overload Protection: Helps protect the tool in demanding applications.
• Mesh Debris Screens: Helps reduce internal wear from dust and debris.

Markets

• Construction and Renovation: Used for cutting metal, smoothing welds, and preparing surfaces on active jobsites.
• Metal Fabrication: Useful for weld cleanup, edge grinding, and general steel preparation in fabrication shops.
• Automotive Repair: Helps technicians remove rust, cut hardware, and grind metal parts during repair work.
• Facility Maintenance: Practical for crews repairing rails, brackets, fasteners, and building equipment.
• Municipal Workers: Suitable for public works departments handling repairs on fences, gates, and site fixtures.
• Trade Schools and Educational Institutions: Supports training in grinder operation, metalworking, and jobsite safety practices.
• Advanced DIY and Home Workshops: A dependable cordless grinder for metal repair, restoration, and fabrication projects.

Contractors and maintenance teams benefit from a cordless angle grinder that offers strong cutting and grinding performance without the limitations of a cord. The DEWALT DCG408B is useful for jobs that require mobility, especially when working around steel framing, rebar, mechanical equipment, and metal fixtures. Fabricators and automotive technicians can rely on the brushless motor for steady speed under load, which helps during repeated grinding passes, weld cleanup, and general metal prep.

The paddle switch design is especially valuable for users who want quick control over activation and shutoff during fast-moving tasks. Combined with Kickback Brake, E-Clutch, and overload protection, this grinder is built for real working conditions where safety and durability matter. Municipal crews, facility departments, and trade training programs also benefit from a grinder that is compact, portable, and designed to hold up in dusty work environments.

Dewalt DCG408B 20V MAX Brushless Cordless 4 1/2″ Paddle Switch Grinder, Tool Only Features

• Brushless Motor: Maintains constant speed under load and reduces maintenance because no brush changes are required.
• Up to 850 MWO Output: Delivers power for tough cutting, grinding, and material removal tasks.
• 9,000 RPM No-Load Speed: Supports fast grinding and efficient surface preparation.
• Paddle Switch Design: Helps reduce accidental startups and allows quick tool shutoff when needed.
• Kickback Brake: Helps stop the wheel during pinch, stall, or bind-up events.
• E-Clutch: Anti-rotation feature designed to improve control in stall conditions.
• Overload Protection: Helps protect the grinder during demanding use.
• QUICK-CHANGE™ Guard Removal: Allows tool-free guard changes for faster setup adjustments.
• Mesh Screens: Helps block debris from entering internal components.
• 4-1/2″ Wheel Acceptance: Sized for common grinding and cutting applications.
• Cordless 20V MAX Platform: Offers portability for jobsites, service vehicles, and workshops.

Dewalt DCG408B 20V MAX Brushless Cordless 4 1/2″ Paddle Switch Grinder, Tool Only Includes

• (1) DCG408B 4-1/2″ Paddle Switch Grinder
• (1) Side Handle
• (1) Clip-On Guard
• (1) Type B Guard
• (1) Inner Flange
• (1) Outer Flange
• (1) Hex Wrench

Dewalt DCG408B 20V MAX Brushless Cordless 4 1/2″ Paddle Switch Grinder, Tool Only Specifications

• Brand: DEWALT
• Model: DCG408B
• Product Type: Cordless Angle Grinder
• Power Source: Cordless
• Battery Platform: DEWALT 20V MAX
• Battery Type: 20V MAX Lithium-Ion
• Battery Included: No
• Charger Included: No
• Battery/Charger: Tool Only
• Motor Type: Brushless
• Wheel Size: 4-1/2″
• Maximum Speed: 9,000 RPM
• Power Output: Up to 850 MWO
• Run Time: Up to 56 cuts of 1/2″ rebar
• Switch Type: Paddle
• Brake System: Kickback Brake
• Clutch System: E-Clutch
• Overload Protection: Yes
• Guard Change System: QUICK-CHANGE™ Tool-Free Guard Removal
• Assembled Length: 12.0″
• Assembled Width: 6.5″
• Assembled Height: 5.0″
• Assembled Weight: 4.528 lbs
• Packaged Length: 13.0″
• Packaged Width: 6.75″
• Packaged Height: 5.1″
• Packaged Weight: 4.828 lbs
• Number of Speeds: (1)
• Handheld or Stationary: Handheld
• Voltage: 20V

Dewalt DCG408B 20V MAX Brushless Cordless 4 1/2″ Paddle Switch Grinder, Tool Only Warranty

• Dewalt’s Guarnateed Tough 3 Year Limited Warranty, 1 Year Free Service, 90 Days Satisfaction Guaranteed

Why Customers Choose the Dewalt 20V MAX Brushless Cordless 4-1/2″ Angle Grinder with Paddle Switch

Contractors, metalworkers, and repair technicians choose the DEWALT DCG408B because it combines cordless grinder mobility with the power needed for daily cutting and grinding work. The brushless motor helps maintain speed under load, which matters when cleaning welds, cutting metal stock, or removing rust from steel parts. With up to 850 MWO and 9,000 RPM, this 4-1/2″ angle grinder is built for common jobsite and shop applications where steady output and easy movement around the work area are important. The paddle switch also gives users more direct control when starting and stopping the tool during active work.

Crews also choose this cordless angle grinder because its safety and durability features match real field conditions. Kickback Brake and E-Clutch help improve control when the wheel binds, while overload protection helps support longer tool life during harder use. Mesh screens help keep damaging debris away from internal components, making this grinder a practical option for construction, fabrication, maintenance, and automotive repair.