Please see items 40529, 114210, and 6599931 for compatible chargers that can charge three or more M18 batteries at one time.
Free Gift Card Details
- The promotion will be automatically applied on the Shopping Cart page.
- To qualify for this offer, your order subtotal must equal $100 or more. Excludes gift cards, free item offers, warranties, Advantage memberships, tax and shipping.
- Free gift cards will be issued in the form of e-gift cards only, not physical gift cards.
- E-gift cards will be sent to the email address used in your billing address when your order ships or is picked up.
- Free e-gift cards expire 10/01/26.
- Promo code not valid on prior purchases or on Honda and STIHL products and cannot be combined with other promotional offers.
- Valid online and in participating retail stores.
- Limited-time offer. Subject to change without notice.
Milwaukee M18 FUEL 4-1/2in./6in. Handheld Concrete Grinder, Paddle Switch, Model# 3670-20

This is a carousel with one large zoomable image and a track of thumbnails on the left. Select any of the thumbnail buttons to change the zoomable image on the right. If a thumbnail is a video or 360 degree image thumbnail, or the last thumbnail in the list, the button will open the product media modal.

Click or Tap image to Zoom
Shipping:
Available nowStore Pickup:
Not Available
- POWERSTATE™ Brushless Motor: Delivers 9,000 RPM to provide the power to complete the toughest grinding and cutting applications.
- M18™ REDLITHIUM™ FORGE™ XC8.0 Battery Pack delivers you HIGH OUTPUT™ HD12.0 power in a smaller size and the longest life vs. REDLITHIUM™ batteries.
- RAPIDSTOP™ Brake stops most wheels in less than 2 second
- Electronic Clutch for Kickback Protection
- REDLINK PLUS™ Intelligence: Most advanced system of electronics in the industry, enabling communication between batteries and tools, allowing for unmatched levels of performance, protection, and compatibility.
See full description
Description
Key Specs
Reviews
Q & A
Warranty
Compare
Product Summary
What's Included
- (1) Grinder
Features + Benefits
- POWERSTATE™ Brushless Motor: Delivers 9,000 RPM to provide the power to complete the toughest grinding and cutting applications.
- M18™ REDLITHIUM™ FORGE™ XC8.0 Battery Pack delivers you HIGH OUTPUT™ HD12.0 power in a smaller size and the longest life vs. REDLITHIUM™ batteries.
- RAPIDSTOP™ Brake stops most wheels in less than 2 second
- Electronic Clutch for Kickback Protection
- REDLINK PLUS™ Intelligence: Most advanced system of electronics in the industry, enabling communication between batteries and tools, allowing for unmatched levels of performance, protection, and compatibility.
- Overload Protection to Maximize Motor Life
- Anti-Vibration Side Handle for Reduced User Fatigue
- Steamlined Handle Grip Size for Increased Control and Ease-Of-Comfort
- Paddle Switch Design for Increased Comfort and Ease-Of-Use when Operating in Various Positions
- 5/8"-11 Spindle for use with common grinding accessories
- Compatible with all M18 batteries
Key Specs
| Attribute | Specification |
|---|---|
item# | 6148233 |
Brand | Milwaukee |
Manufacturer's Warranty | 5 year limited warranty |
Ship Weight | 6.8 LB |
Wheel Diameter | 6 in |
Volts | 18 |
| Attribute | Specification |
|---|---|
Cordless | Yes |
Battery Type | Lithium-ion |
Product Category | Concrete Power Tools |
Batteries Included | No |
Dimensions L x W x H (in.) | 14.75 x 3.0 x 4.5 in |
Product Weight | 5.3000 lb |
Reviews
Questions & Answers
Questions
-
· a month ago
I need 3 charging stations for this grinder. What do you suggest?
1 answer-
ProductExpert12· a month ago
Helpful?
-
-
· a month ago
What battery does this take
1 answer-
ProductExpert12· a month ago
This grinder is compatible with M18 batteries. Item 6650768 is the recommended battery and charger kit for this tool.
Helpful?
-
-
· 4 months ago
So can this run a 4.5in or 6in wheel?
1 answer-
ProductExpert6· 4 months ago
The grinder is designed to handle both 4.5" and 6" wheels.
Helpful?
-
-
· 9 months ago
Does this tool come with a battery?
1 answer-
ProductExpert12· 8 months ago
This grinder does not include a battery or charger. Item 6650768 is the recommended battery and charger for this tool.
Helpful?
-
Warranty
Manufacturer's Warranty
5 year limited warranty
Compare with Most Popular in Handheld Grinders
See All Handheld Grinders
See All Milwaukee Handheld Grinders
Currently Viewing This Product
Item # 6148233
$279.00Shipping:
Available nowStore Pickup:
Not Available
- $149.00
Shipping:
Available nowStore Pickup:
Not Available
Item # 5880158
$369.99Shipping:
Factory shippedStore Pickup:
Not available - online only
- $54.99Reg $69.99Save $15.00
Order today to get this price.
Shipping:
Free shipping (lower 48 states) - Available nowStore Pickup:
Not Available
Specifications
6 in
9 in
4.5 in
-
18
-
120
20
Yes
Yes
Yes
Yes
Lithium-ion
-
Lithium-ion
-
Concrete Power Tools
Concrete Power Tools
Power Tools Regular
Power Tools Regular
No
-
Yes
-
14.75 x 3.0 x 4.5 in
12.45 x 7.08 x 11.41 in
17.0 x 11.125 x 5.4 in
15.8 x 3.0 x 3.8 in
5.3000 lb
4.5000 lb
10.4500 lb
2.8000 lb
-
-
5
-
-
-
8,000 rpm
26,000 rpm
-
-
No
-
-
-
5/8 in
-
-
-
2
-
-
-
5
-
See All Handheld Grinders
See All Milwaukee Handheld Grinders
Recently Viewed Items
This is a carousel with auto-rotating slides. Activate any of the buttons to disable rotation. Use Next and Previous buttons to navigate, or jump to a slide with the slide dots.



