Milwaukee M18 Fuel Grinder, 4-1/2"-6" Braking, Paddle Switch (Bare Tool)

Milwaukee M18 Fuel Grinder, 4-1/2"-6" Braking, Paddle switch (Bare Tool)

The Milwaukee 3670-20 M18 FUEL™ 4-1/2"–6" Braking Grinder is a high-performance cordless grinder built to deliver corded-level power with advanced safety and control. Designed to match the output of a 13A corded grinder, it runs at 9,000 RPM and handles everything from grinding to cutting with ease. Featuring the RAPID STOP™ brake, which stops accessories in under 3 seconds, along with tool-free adjustments and a paddle switch design, this grinder is built for efficiency, durability, and serious jobsite performance—because when sparks are flying, control matters.

Country of Origin
Varies by production batch

Key Features / Specifications

• Model / Part Number: 3670-20
• Brand / Series: Milwaukee M18 FUEL™
• Product Type: Cordless small angle grinder (bare tool)
• Wheel Compatibility: 4-1/2 in to 6 in accessories
• Motor: POWERSTATE™ Brushless Motor
• Speed: 9,000 RPM
• Power: Equivalent to a 13A corded grinder
• Brake: RAPID STOP™ braking system (stops accessories in under 3 seconds)
• Switch Type: Paddle switch (no-lock) for increased safety
• Technology: REDLINK PLUS™ Intelligence for overload, overheating, and over-discharge protection
• Accessory Changes: Tool-free FIXTEC™ nut system
• Guard Adjustment: Tool-free guard positioning
• Ergonomics: Designed for improved handling and reduced fatigue
• Battery System: M18™ REDLITHIUM™ compatible (battery not included)
• Durability: Built for heavy-duty grinding, cutting, and surface prep applications

Ideal For

• Grinding, cutting, and surface prep in metalworking and construction
• Professionals needing corded power without the cord
• Jobs requiring fast stopping for increased safety
• Users who value quick adjustments and minimal downtime
• Anyone who wants a grinder that works hard—and knows when to stop just as fast