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

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.

Usage

• Metal Grinding

• Metal Cutting

• Surface Preparation

• Weld Grinding and Cleanup

• Fabrication Work

• Construction

• Mechanical Work

• Industrial Maintenance

• Professional Metalworking

Genuine Milwaukee Product

M18 FUEL™ Cordless Platform

POWERSTATE™ Brushless Motor

Generates 13A Corded-Equivalent Power

Up to 9,000 RPM

Compatible with 4-1/2" to 6" Grinding and Cutting Accessories

RAPIDSTOP™ Brake Stops Most Wheels in Less Than 2 Seconds

Electronic Clutch for Kickback Protection

REDLINK PLUS™ Intelligence

Overload Protection

Paddle Switch Design

Anti-Vibration Side Handle

Removable Dust Screen

Spindle Lock

5/8"-11 Spindle

Compatible with All Milwaukee M18™ Batteries

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

(1) T27 Guard

(1) T1 Clip-On Guard

(1) Flange Nut

(1) Back Flange

(1) Wrench

(1) Side Handle

Battery, charger, grinding wheel, and carrying case are not included.

Brand: Milwaukee

Model: 3670-20

Series: M18 FUEL™

Tool Type: Braking Grinder

Motor: POWERSTATE™ Brushless

Battery Platform: M18™

Wheel Capacity: 4-1/2"–6"

Maximum Speed: 9,000 RPM

Power Equivalent: 13A Corded Power

Switch Type: Paddle Switch

Brake: RAPIDSTOP™

Kickback Protection: Electronic Clutch

Spindle: 5/8"-11

Side Handle: Anti-Vibration

Overload Protection: Yes

Battery Included: No

Charger Included: No

Carrying Case Included: No

Metal Grinding

Metal Cutting

Surface Preparation

Weld Grinding and Cleanup

Fabrication Work

Construction

Mechanical Work

Industrial Maintenance

Professional Metalworking

Orders are carefully inspected before shipping.
Most orders ship within one business day.
Items are securely packaged to help prevent damage during transit.
Original retail packaging is included when available. If unavailable, the item will be professionally packaged to ensure safe delivery.
Tracking information is provided once your order ships.

Covered by Milwaukee's manufacturer warranty where applicable.
Please refer to Milwaukee's official warranty policy for complete terms and coverage.

1. Do you sell genuine products?
Yes. Every product we sell is 100% authentic.

2. Does the Milwaukee 3670-20 include a battery or charger?
No. The 3670-20 is sold as a tool-only model. Battery and charger are sold separately.

3. What wheel sizes can the Milwaukee 3670-20 use?
The 3670-20 is designed for compatible 4-1/2" through 6" grinding and cutting accessories.

4. What is the maximum speed of the Milwaukee 3670-20?
The POWERSTATE™ Brushless Motor delivers up to 9,000 RPM for demanding grinding and cutting applications.

5. How quickly does the RAPIDSTOP™ Brake stop the wheel?
The RAPIDSTOP™ Brake is designed to stop most wheels in less than 2 seconds.

6. Does the Milwaukee 3670-20 have kickback protection?
Yes. It features an electronic clutch designed to provide kickback protection during operation.

7. Does the Milwaukee 3670-20 have variable speed?
No. The 3670-20 operates at up to 9,000 RPM. For users who need selectable variable-speed settings, Milwaukee offers other grinder models designed with that feature.

8. What type of switch does the Milwaukee 3670-20 use?
It features a non-locking paddle switch designed for comfortable operation and greater control in different working positions.

9. What applications is the Milwaukee 3670-20 designed for?
It is designed for demanding grinding, cutting, surface preparation, weld cleanup, fabrication, and other professional metalworking applications.

10. When will my order ship?
Most orders are shipped within one business day.

11. Do you ship internationally?
Yes. We offer fast shipping to most countries worldwide.

12. What if the original box is not included?
If the original retail box is unavailable, the item will be carefully packaged to ensure safe delivery.