Milwaukee

Milwaukee M18 FUEL™ 4-1/2"–6" Braking Grinder, Paddle Switch (3670-20)

$229.00 USD

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Product Description

The Milwaukee M18 FUEL™ 4-1/2"–6" Braking Grinder, Paddle Switch (3670-20) delivers exceptional power, cutting speed, and safety for demanding grinding and cutting applications. Powered by a POWERSTATE™ Brushless Motor, this cordless grinder produces the equivalent of 13-amp corded performance with a maximum speed of 9,000 RPM. The RAPIDSTOP™ Brake quickly stops the wheel in under two seconds, while the electronic clutch, paddle switch, and REDLINK PLUS™ Intelligence provide enhanced protection and control. Compatible with all Milwaukee M18™ batteries, the 3670-20 is built for professional metal fabrication, construction, industrial maintenance, and welding applications.

Key Features

Genuine Milwaukee Product
POWERSTATE™ Brushless Motor
Delivers 13-Amp Corded Performance
RAPIDSTOP™ Brake
4-1/2"–6" Wheel Capacity
Up to 9,000 RPM
Paddle Switch
Electronic Clutch for Kickback Protection
REDLINK PLUS™ Intelligence
Tool-Free Guard Adjustment
Compatible with All Milwaukee M18™ Batteries
Professional Cordless Performance

Ideal For

Perfect for:

Metal Fabrication
Welding
Structural Steel
Pipe Fabrication
Industrial Maintenance
General Construction
Surface Preparation
Cutting and Grinding Applications

Technical Specifications

Specification	Details
Brand	Milwaukee
Model	3670-20
Tool Type	Braking Grinder
Series	M18 FUEL™
Motor	POWERSTATE™ Brushless
Battery Platform	M18™
Wheel Capacity	4-1/2"–6"
No-Load Speed	9,000 RPM
Switch Type	Paddle Switch
Brake	RAPIDSTOP™
Arbor Size	5/8"-11
Battery Included	No
Charger Included	No
Warranty	5-Year Limited Tool Warranty

What's Included

Milwaukee M18 FUEL™ 4-1/2"–6" Braking Grinder, Paddle Switch (3670-20)
Side Handle
T27 Guard
T1 Clip-On Guard
Flange Nut
Back Flange
Spanner Wrench

Battery and charger sold separately.

Why Choose This Model?

Maximum Power for Heavy-Duty Grinding

The 3670-20 delivers the equivalent of a 13-amp corded grinder with a maximum speed of 9,000 RPM, providing the power needed for demanding cutting, grinding, and surface preparation applications.

Enhanced Safety and Control

Featuring a RAPIDSTOP™ Brake, electronic clutch, and paddle switch, this grinder offers improved user protection while maintaining excellent control during operation.

Built for Professional Productivity

Powered by a POWERSTATE™ Brushless Motor and REDLINK PLUS™ Intelligence, the 3670-20 delivers outstanding durability, longer tool life, and reliable cordless performance across the entire Milwaukee M18™ System.

Compare Before You Buy

Feature	Milwaukee 3670-20
Tool Type	Braking Grinder
Motor	POWERSTATE™ Brushless
Wheel Capacity	4-1/2"–6"
Maximum Speed	9,000 RPM
RAPIDSTOP™ Brake	✔
Paddle Switch	✔
Electronic Clutch	✔
Battery Platform	M18™
Our Recommendation	⭐ Best M18 FUEL 4-1/2"–6" Braking Grinder

Industry Applications

Ideal for professionals working in:

Metal Fabrication
Welding
Structural Steel
Pipe Fabrication
Industrial Maintenance
Construction
Mechanical Contracting
Surface Preparation

Compatible Accessories

For the best performance, pair this grinder with:

Milwaukee M18™ REDLITHIUM™ FORGE™ Batteries
Milwaukee M18™ Battery Chargers
4-1/2" Grinding Wheels
5" Grinding Wheels
6" Grinding Wheels
Cut-Off Wheels

Packaging Notice

This product may not include the original retail packaging. However, every order is carefully inspected, securely packaged, and protected to ensure it arrives safely and in excellent condition.

Why Buy from Mike Resells?

When you shop with Mike Resells, you're getting more than just professional tools.

We proudly offer:

Genuine Products
Competitive Prices
Secure Checkout
Carefully Packaged Orders
Free U.S. Shipping
Fast Shipping to Most Countries

Frequently Asked Questions

1. Is this Milwaukee grinder genuine?

Yes. Mike Resells sells only genuine Milwaukee products sourced from trusted suppliers.

2. Does this tool include a battery or charger?

No. Model 3670-20 is the bare tool only. Batteries and chargers are sold separately.

3. What wheel sizes does the 3670-20 support?

The grinder is designed to use 4-1/2-inch, 5-inch, and 6-inch grinding and cutting wheels, making it suitable for a wide variety of professional applications.