M18 FUEL 4-1/2"-6" Braking Grinder with Paddle Switch - Milwaukee Electric Tools

The Milwaukee Electric Tools M18 FUEL 4-1/2"-6" Braking Grinder with Paddle Switch (model 3670-20) delivers performance comparable to a 13A corded grinder within the M18™ FUEL™ cordless system, offering powerful grinding and cutting capabilities for professional automotive, fabrication, and industrial settings. This tool integrates advanced safety features and robust construction for demanding tasks and consistent operation.

Key Features

• Versatile Wheel Capacity: Accommodates wheel sizes from 4-1/2" to 6", enabling a single tool to handle a wide range of grinding, cutting, and material removal applications, from intricate work to aggressive material shaping.
• RAPIDSTOP™ Braking System: Enhances safety and productivity by stopping the wheel in under two seconds upon trigger release, which is particularly beneficial when working near sensitive vehicle components or during accessory changes.
• Paddle Switch Design: Provides precise control and a secure grip, making the tool suitable for overhead applications, undercar service, and maneuvering in confined spaces around vehicle frames or suspension. Its no-lock design further contributes to user comfort and control.
• POWERSTATE™ Brushless Motor: Delivers a sustained 9,000 RPM, preventing bogging down during challenging tasks such as heavy grinding, weld cleanup, and cutting through thick steel.
• REDLINK PLUS™ Intelligence: This advanced hardware and software system provides thermal and overload monitoring, protecting both the tool and its battery for reliable performance in high-demand industrial environments.
• Integrated Safety & Durability: Features an electronic clutch for kickback protection and includes an anti-vibration side handle to reduce user fatigue during extended operation. The metal housing and gearing system contribute to its legendary durability.

Applications

This Milwaukee M18 FUEL braking grinder is well-suited for professional automotive and truck repair, metal fabrication, and plant maintenance. Specific applications include grinding welds on vehicle frames and control arms, cutting exhaust systems and rebar, trimming brackets and plate steel, and preparing surfaces prior to welding or coating. The cordless design offers operational flexibility for use on lifts, in busy service bays where trip hazards are a concern, and for mobile mechanics or field service technicians.

Specifications

• Model: 3670-20
• Wheel Size Range: 4-1/2" to 6"
• RPM: 9,000
• Spindle Size: 5/8"-11
• Weight (bare tool): 5.3 lbs
• Dimensions (L x H x W): 14.75" x 4.5" x 3"
• Platform: M18™ FUEL™ cordless system