The grinder would not accept a 6" cutting wheel. It can only be used with a 4.5" or a 5" cutting wheel.
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 4-1/2in./5in. Brushless Concrete Cut-Off Grinder, Tool Only, 18V, Model# 2686-20

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
Order today to get this price.
Shipping:
Free shipping (lower 48 states) - Available now
$19.99 Same DayStore Pickup:
2 in stock at Fredericksburg VA - Pickup in under 1 hr
- Milwaukee brushless motor: optimized for efficiency, this motor delivers more run-time and longer life than a brushed motor
- REDLINK™ Intelligence: Advanced overload protection defends against abusive applications and monitors the temperature to prevent damage and ensure maximum tool & battery life.
- REDLITHIUM™ batteries (not included) deliver more work per charge and more work over the life of the battery
- Paddle Switch Design for Increased Comfort and Ease-Of-Use when Operating in Various Positions
- Tool-Free Guard Adjustment for faster guard installations and adjustments
See full description
Description
Key Specs
Reviews
Q & A
Accessories
Warranty
Compare
Product Summary
What's Included
- (1) (1) 2686-20 M18™ Brushless 4-1/2" / 5" Cut-Off Grinder, (1) Type 1 Guard, (1) Type 27 Clip-On Guard, (1) Side Handle, (1) Back Flange, (1) Flange Nut, (1) Wrench
Downloads
Features + Benefits
- Milwaukee brushless motor: optimized for efficiency, this motor delivers more run-time and longer life than a brushed motor
- REDLINK™ Intelligence: Advanced overload protection defends against abusive applications and monitors the temperature to prevent damage and ensure maximum tool & battery life.
- REDLITHIUM™ batteries (not included) deliver more work per charge and more work over the life of the battery
- Paddle Switch Design for Increased Comfort and Ease-Of-Use when Operating in Various Positions
- Tool-Free Guard Adjustment for faster guard installations and adjustments
- 5/8"-11 Spindle for Use with Common Grinding Accessories
- Overload Protection: Maximizes motor life
- Electronic Clutch for Kickback Protection
- Compatible with all M18™ batteries
Key Specs
| Attribute | Specification |
|---|---|
item# | 5344321 |
Brand | Milwaukee |
Manufacturer's Warranty | 60 months parts/60months labor |
Ship Weight | 4.6 LB |
Wheel Diameter | 4.5 in |
Volts | 18 |
Max. Speed | 11,000 rpm |
Cordless | Yes |
Battery Type | Lithium-ion |
| Attribute | Specification |
|---|---|
Variable Speed | No |
Spindle Size | 5/8 in |
Power Cord Length | 0 ft |
Product Category | Concrete Power Tools |
Batteries Included | No |
Batteries (qty.) | 0 |
Dimensions L x W x H (in.) | 12.25 x 10.0 x 4.75 in |
Product Weight | 3.6000 lb |
Reviews
Questions & Answers
Questions
-
· 7 months ago
Will this grinder use a 6 inch cutting wheel?
1 answer-
ProductExpert6· 7 months ago
Helpful?
-
-
· 7 months ago
What is the grinder use for. Can it cut a 4" steel pipe?
1 answer-
ProductExpert6· 7 months ago
The cutoff grinder would be used for cutting and surfacing applications, such as cutting rebar, metal, tile and concrete. It could be used to cut 4" steel pipe with the correct abrasive cutoff wheel.
Helpful?
-
-
· 7 months ago
Is this a variable speed or one speed grinder?
1 answer-
ProductExpert13· 7 months ago
This is the non-variable speed model with a fixed 11,000 RPM.
Helpful?
-
-
· 11 months ago
Is this tool brush or brushless?
1 answer-
ProductExpert29· 11 months ago
The 2686‑20 model is a brushless grinder.
Helpful?
-
-
· a year ago
4 1/2” with 5/8 arbor cutting disc is difficult to find
1 answer-
ProductExpert11· 11 months ago
The grinding wheel item number 1599753 will be a 4.5" disc with a 5/8" arbor.
Helpful?
-
-
· 3 years ago
What size of batt pack will this tool use
1 answer-
ProductExpert23· 3 years ago
This is compatible with all M18™ batteries.
Helpful?
-
Accessories We Recommend
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.
Milwaukee M18 REDLITHIUM XC5.0 Battery, Model# 48-11-1850
Item # 51491
Order today to get this price.
Warranty
Manufacturer's Warranty
60 months parts/60months labor
Compare with Most Popular in Handheld Grinders
See All Handheld Grinders
See All Milwaukee Handheld Grinders
Currently Viewing This Product
Item # 5344321
$159.00Reg $179.00Save $20.00Order today to get this price.
Shipping:
Free shipping (lower 48 states) - Available now
$19.99 Same DayStore Pickup:
2 in stock at Fredericksburg VA - Pickup in under 1 hr
- $149.00
Shipping:
Available now
$19.99 Same DayStore Pickup:
2 in stock at Fredericksburg VA - Pickup in under 1 hr
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 now
$19.99 Same DayStore Pickup:
4 in stock at Fredericksburg VA - Pickup in under 1 hr
Specifications
4.5 in
9 in
4.5 in
-
18
-
120
20
11,000 rpm
-
8,000 rpm
26,000 rpm
Yes
Yes
Yes
Yes
Lithium-ion
-
Lithium-ion
-
No
-
No
-
5/8 in
-
5/8 in
-
0 ft
-
-
-
Concrete Power Tools
Concrete Power Tools
Power Tools Regular
Power Tools Regular
No
-
Yes
-
0
-
2
-
12.25 x 10.0 x 4.75 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
3.6000 lb
4.5000 lb
10.4500 lb
2.8000 lb
-
-
5
-
-
-
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.
Milwaukee M18 4-1/2in./5in. Brushless Concrete Cut-Off Grinder, Tool Only, 18V, Model# 2686-20
Item # 5344321
Order today to get this price.






