Milwaukee 3670-22 M18 Fuel Angle Grinder Paddle Switch Kit

Product Description

The MILWAUKEE 3670-22 is an 18-volt M18 FUEL cordless angle grinder designed for heavy-duty grinding and cutting in trade and industrial applications. It runs on the M18 battery platform and delivers 9,000 RPM through a POWERSTATE brushless motor, generating performance equivalent to a 13-amp corded grinder. The RAPIDSTOP brake brings disc rotation to a stop in under 2 seconds, reducing idle time and improving jobsite safety. An electronic clutch provides kickback protection, and overload protection is built in to extend motor life. The paddle switch configuration requires deliberate activation, which is standard for angle grinder safety. At 5.30 pounds with a glass-filled nylon and aluminum housing, it balances durability with manageable weight for overhead and positional work.

The 3670-22 is suited for metal fabrication, structural steel work, mechanical contracting, and general trade use where a corded power source is impractical. The kit includes two M18 REDLITHIUM FORGE XC8.0 battery packs and a charger, providing runtime sufficient for sustained production cutting and grinding. The 4.5-inch to 6-inch wheel capacity covers the most common disc sizes used in electrical, pipefitting, welding, and ironwork trades. The included bag allows organized storage and transport of the tool, batteries, and accessories on the jobsite.

Key Features

• POWERSTATE brushless motor delivers 9,000 RPM and sustained 13-amp equivalent corded power output
• RAPIDSTOP brake stops abrasive disc rotation in under 2 seconds for faster disc changes and safer handling
• Electronic clutch provides kickback protection during bind-up events
• Overload protection monitors motor load to prevent burnout and extend tool life
• Paddle switch with no lock-on for consistent operator control compliance
• Accepts 4.5-inch and 6-inch diameter wheels with a 5/8-11 UNC arbor
• Glass-filled nylon and aluminum housing for impact resistance and reduced weight

Compatibility

The 3670-22 operates on the M18 18-volt cordless battery platform and accepts any M18 battery pack. The kit is configured with two M18 REDLITHIUM FORGE XC8.0 battery packs. The tool accepts grinding and cutting wheels from 4.5 inches to 6 inches in diameter with a 5/8-11 UNC threaded arbor, which is the standard abrasive disc mount for angle grinders in this size class.

Installation Notes

Angle grinder disc installation and replacement must be performed with the battery pack removed from the tool. Use the spindle lock to immobilize the arbor while threading the flange nut with the supplied wrench. All abrasive disc work should comply with ANSI B7.1 wheel safety standards and applicable OSHA requirements for abrasive wheel machinery. A licensed tradesperson or qualified operator should verify disc rating matches or exceeds the tool maximum RPM of 9,000 before use.

Technical Specifications

• Power Source: Electric - Cordless
• Grinder Type: Angle
• Battery Voltage: 18 volts
• Maximum RPM: 9,000
• Wheel Diameter: 4.5 to 6 inches
• Arbor Size: 5/8-11 UNC
• Switch Type: Paddle, No Lock
• Variable Speed: No
• Side Handle: Yes
• Spindle Lock: Yes
• Overload Protection: Yes
• Handle Type: Straight
• Housing Material: Glass Filled Nylon, Aluminum
• Net Tool Weight: 5.30 pounds
• Length: 14.75 inches
• Number of Batteries Included: 2
• Charger Included: Yes
• Product Storage: Bag
• UL Listed: Yes
• Manufacturer Warranty: 5 Year Limited

Standard Information

• Brand: MILWAUKEE
• Manufacturer Part Number: 3670-22