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Model #2881-20

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M18 FUEL 18-Volt Lithium-Ion Brushless Cordless 4-1/2 in./5 in. Grinder with Slide Switch (Tool-Only)

$19900
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  • Angle grinder with slide switch generates 11A corded power
  • Battery powered grinder: up to 135 cuts in 3/8" rebar per charge
  • Part of the M18™ System, featuring over 200 solutions
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$19900

Product Overview

The MILWAUKEE® M18 FUEL™ 4-1/2" / 5" Grinder SlideSwitch, Lock-On is the next advancement in power and performance, generating 11A corded power, fastest cutting, and delivering up to 135 cuts per charge. The M18 FUEL™ 4-1/2" / 5" Grinder generates 11A corded power allowing users to complete the toughest grinding and cutting applications, all on the M18™ cordless system. The POWERSTATE™ Brushless Motor delivers maximum sustained power and 8,500 RPM to remove material faster and increase productivity. REDLINK PLUS™ Intelligence ensures unmatched levels of performance, protection, and compatibility. The M18 FUEL™ 4-1/2" / 5" Grinder includes an electronic clutch for kickback protection, as well as overload protection to maximize motor life. The M18™ REDLITHIUM™ HIGH OUTPUT™ XC6.0 Batteries (not included) deliver 50% more power while running 50% cooler than our M18™ REDLITHIUM™ XC Batteries and are compatible with 200+ Tools in the M18™ System. With tool-free accessory and guard adjustments, users will experience faster accessory changes, and less downtime, while remaining fully compatible with the most common accessories in the market. The M18 FUEL™ 4-1/2" / 5" Grinder takes cordless grinders to the next level in performance and run-time.
  • POWERSTATE™ Brushless Motor: Purposely built for the M18 FUEL™ 4-1/2" / 5" Angle Grinder delivers 8,500 RPM to provide the power to complete the toughest grinding and cutting applications.
  • 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.
  • REDLITHIUM™ HIGH OUTPUT™ Battery Pack (Not Included): Provides 50% more power and runs 50% cooler versus standard REDLITHIUM™ Battery. Superior pack construction, electronics and performance deliver more work per charge and more work over pack lifespan than any battery on the market.
  • Slide Switch Designed to Reduce User Fatigue
  • Tool-Free Guard Adjustment for faster guard installations and adjustments
  • Tool-Free Accessory Changes with Integrated FIXTEC Nut Technology
  • Electronic Clutch for Kickback Protection
  • 5/8"-11 Spindle for Use with Common Grinding Accessories
  • Overload Protection to Maximize Motor Life
  • Anti-Vibration Side Handle for Increased User Comfort and Safety
  • Compatible with all M18™ Batteries
  • Includes: (1) M18 FUEL 4-1/2" / 5" Grinder Slide Switch, Lock-On (2881-20), (1) T27 Guard, (1) T1 Clip-On Guard, (1) Side Handle, (1) Spanner Wrench, (1) Back Flange, (1) Flange Nut
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M18 FUEL 18-Volt Lithium-Ion Brushless Cordless 4-1/2 in./5 in. Grinder with Slide Switch (Tool-Only)
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BrandMilwaukeeMilwaukeeMilwaukeeMilwaukee
NameM18 FUEL 18-Volt Lithium-Ion Brushless Cordless 4-1/2 in./5 in. Grinder with Slide Switch (Tool-Only)M18 FUEL 18-Volt Lithium-Ion Brushless Cordless 4-1/2 in./5 in. Grinder w/Paddle Switch (Tool-Only)M18 FUEL 18-Volt Lithium-Ion Brushless Cordless 4-1/2 in./5 in. Braking Grinder With Paddle Switch (Tool-Only)M18 FUEL 18-Volt Lithium-Ion Brushless Cordless 4-1/2 in./5 in. Braking Grinder with Slide Switch (Tool-Only)
Price
$19900
$19900
$21900
$21900
Ratings
(36)
(138)
(19)
(12)
Cordless/ CordedCordlessCordlessCordlessCordless
Wheel Diameter (in.)5 in4.5 in4.5 in4.5 in
Power Tool FeaturesNo Additional FeaturesAdjustable Handle Position,Blade Guard System,Side HandleNo Additional FeaturesAdjustable Handle Position,Blade Guard System,Electric Brake,Side Handle
Amperage (amps)0 A0 A0 A0 A
Voltage (volts)18181818
Battery Amp HoursNo BatteryNo BatteryNo BatteryNo Battery
Motor TypeBrushlessBrushlessBrushlessBrushless
Battery/ChargerTool OnlyTool OnlyTool OnlyTool Only
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Specifications

Dimensions

Product Depth (in.)
12.71 in
Product Height (in.)
4.05 in
Product Width (in.)
2.78 in
Wheel Diameter (in.)
5 in

Details

Amperage (amps)
0 A
Arbor Size
0
Batteries Included
No
Battery Amp Hours
No Battery
Battery Power Type
Lithium Ion
Battery Size
18-volt
Battery/Charger
Tool Only
Battery/Charger
Tool Only
Charger Included
Charger Not Included
Color Family
Red
Condition
New
Cordless Tool Type
Angle Grinder
Cordless/ Corded
Cordless
Electronic Speed Control
Yes
Grinder Switch Type
Paddle
Included
No Additional Items Included
Maximum Speed (rpm)
8500
Motor Type
Brushless
Number of Total Batteries Included
0
Power Tool Features
No Additional Features
Product Weight (lb.)
3.1 lb
Returnable
90-Day
Tools Product Type
Power Tool
Variable Speed
Yes
Voltage (volts)
18

Warranty / Certifications

Certifications and Listings
UL Listed
Manufacturer Warranty
5 Year (Tool), 3 Years (Battery)

Questions & Answers

Typical questions asked about products:

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Customer Reviews

  • 5
    out of 18 reviews
  • 100%recommend this product
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Showing 1-10 of 18 reviews
Great grinder with nice weight to power ratio. I love this thing. I love the two batteries that...
Great grinder with nice weight to power ratio. I love this thing. I love the two batteries that it comes with and the charger and of course the grinder. Everything fits nicely into the bag and the weight is perfect. Its got a nice guard on it to protect you from the disc but it can be removed if necessary. The handle can be mounted on either side and it appears to have a shock absorber to reduce vibration or at least that's what it looks like. Noise level is nice in that it seems to be quieter than my other Milwaukee plug-in grinder. All in all this is a nice, versatile grinder that can go anywhere you need it to go! Truly love it.
by
  • Recommended
I have a paddle switched corded grinder and debated between getting this Milwaukee cordless grind...
I have a paddle switched corded grinder and debated between getting this Milwaukee cordless grinder with the slide switch or the paddle switch. I elected to go with the slide switch and it has worked out great. I no longer have to keep my hand firmly on the switch. That gives me a bit more flexibility in hand positions while using it. Being cordless has been great. I don’t have to mind the cord and the power hasn’t been an issue. The kit comes with two 6AH batteries and a charger. I can also swap in batteries from my other tools if I run through the charge on one before the other is fully recharged. It is about as heavy as my corded grinder, but the batteries balance the tool nicely. The protective shroud can be rotated to protect from sparks in multiple positions. Overall I really like this tool. I haven’t found a flaw in it.
by
  • Recommended
I've become a big fan of cordless tools, and I'm a huge fan of Milwaukee products, so when I got ...
I've become a big fan of cordless tools, and I'm a huge fan of Milwaukee products, so when I got the chance to try out this Milwaukee M18 FUEL 18-volt Lithium-Ion Brushless Cordless 4 1/2 in/5 in. Grinder, I jumped at the chance. Can't say I'm disappointed in the least - this is one powerful grinder. With the proper cutting wheels, it made quick work of everything I threw at it. Ceramic tile, masonry, steel, concrete block, all no problem. And with the 6.0 AH battery, you have plenty of cutting time. The weight of the grinder is well balanced and the tool handles easily. And the shield adjusts quickly to change the cutting field, something my old corded grinder couldn't do. No more hot metal shards flying off where they don't belong. 2 batteries and the charger are included, as is a carrying bag to keep things organized. I'm very happy with this tool. Another fine effort from Milwaukee and highly recommended!
by
  • Recommended
1 person found this helpful
The Milwaukee M18 FUEL 18-volt Lithium-Ion Brushless Cordless 4 1/2 inch to 5 inch Grinder is a v...
The Milwaukee M18 FUEL 18-volt Lithium-Ion Brushless Cordless 4 1/2 inch to 5 inch Grinder is a very nice tool to have in your arsenal. It is pretty heavy and measures 12 1/2 inches long without the battery or 16 inches long with the XC6.0 battery attached. When you first get it, you need to charge your batteries before using it. It comes with 2 – XC 6.0 batteries and a battery charger that charges both the 18 volt and 12-volt Milwaukee batteries. As stated, this is not a lightweight tool. It requires both hands to use it. It is single speed with a locking on/off switch. One major issue I had with the switch is that it’s too easy to turn it on. While using the tool it slipped in my hand and my thumb slid over the switch. The tool turned on and the switch automatically locked. It almost cut my arm but I dropped it and got out of its way. The wheel guard is not attached when the tool arrives but is easily assembled and can be swiveled and locked into 5 pre-set positions. The battery slides into the end of the grinder and locks into position. Easily removed by simultaneously squeezing 2 side buttons and slide the battery off. The battery slides into the battery charger but doesn’t lock into place. The lights on the battery light up to indicate the level it is charged. This tool is an M18 (18 volt) but the charger will also charge M12 (12 volt) Milwaukee batteries. Also included is a side handle that can be screwed into either side of the grinder for more support and control during operation. This grinder can be used with any 4 1/2 inch or 5-inch grinding wheel, cutoff wheel, wire brush wheel, or any disk normally used on a side grinder. None are included with this kit but easily available at any Home Depot. A spanner wrench is included to assist in installing or removing the wheels. The tool and accessories come with a large, zippered Milwaukee tool bag that easily holds everything in this kit plus a large assortment of several wheels and disks. Instructions are provided for both the grinder and charger in English, French, and Spanish. A 5-year warranty is provided on the tool and 3-year warranty on the batteries. The tool and charger are made in Vietnam and the guard is made in China. This is a very durable and powerful portable grinder and is very handy without having to drag out power extension cords.
by
  • Recommended
The Milwaukee M18 FUEL 18-Volt Lithium-Ion Brushless Cordless 4-1/2 in./5 in. Grinder, Slide Swit...
The Milwaukee M18 FUEL 18-Volt Lithium-Ion Brushless Cordless 4-1/2 in./5 in. Grinder, Slide Switch Kit with Two 6.0 Ah Batteries is awsome! The kit has pretty much all the things you need to do most any grinding job. As always, the Milwaukee batteries seem to last forever. The grinder is well balanced in your hands. And the power seems to be better than my corded grinder. Great tool. And I firmly recomend it.
by
  • Recommended
1 person found this helpful
This Milwaukee M18 Fuel grinder tool easily tops the scale in power, quality, durability and craftsmanship. I have a number of the Fuel brushless tools and have never been disappointed in their performance. While these tools may be more expensive than other tool brands, there is no comparison - as the saying goes, you get what you pay for. In addition to the grinder itself, the kit comes with two M18 RedLithium High output 6Ah battery packs providing extended run time. Also included are a combination 18v and 12v rapid charger, type 1 and type 27 disk guards, spanner tool, and a large soft-sided carrying bag. The grinders guard has six detents and is quickly adjustable. The motor air vents at the base of the handle has a filter screen which is easily detachable for cleaning – prevents metal dust and debris from damaging the motor. The screw-in side handle has a vibration dampening construction which works very well and is a welcomed feature for large jobs. The tool and battery weigh-in at 6.8 pounds – heavier than a corded grinder but with much more job-site flexibility. Overall, very happy with this tool and highly recommend it for the professional or DIYer.
by
  • Recommended
Great tool for the job! The large 6 ah batteries are big and offer a lot of power and cutting tim...
Great tool for the job! The large 6 ah batteries are big and offer a lot of power and cutting time between charges. I like that the motor is brushless so I expect a long life for this grinder. The tool is balanced well but and a little heavier than other grinders I have used. However, I expect that from a tool that is required to perform very well, all the time, as do all of my other Milwaukee tools. The recharge time of the batteries from dead to full is about 20 minutes. So it is very handy if you have the backup battery ready. I do not use the tool enough that I will see a need for my standby battery but who knows as it is better to be prepared than waiting. I did not read that the tool did not come with at least one wheel. That's on me but it would have been nice to have a starter wheel included. I would still give the tool 10 stars if I could.
by
  • Recommended
I didn't have a lot of prior experience with grinders but I had some metal to cut and I was told ...
I didn't have a lot of prior experience with grinders but I had some metal to cut and I was told this was the tool to do it. That was no lie. This grinder by Milwaukee is a powerhouse that goes through metal like butter. This is an incredible tool... with a multitude of functions that I haven't even tried yet. The cutting is only the beginning. This tool polishes, grinds, and - of course - cuts like nothing I've ever used before. The people at Milwaukee provide a rapid charger, TWO batteries, and a heavy duty bag to carry it all in. They do NOT include any wheels, which - I presume - is because there simply ARE so many accessories that perform so many vastly different functions that they figure it's best to let you select your own rather than supplying many that you might not want, need, or use. I do recommend caution. This is a 'two hand' tool, so secure your work before you begin. And there's little need to add the obvious caution of protective eyewear and any other normal safety norms. All in all, this is a dynamic tool that I look forward to getting better at using. This is likely to become one of those tools that you didn't see an absolute need for... then you get and find you can't do without it! I love that it's battery operated to keep it completely mobile. And I love that it comes from a company - Milwaukee - that I've come to totally trust!
by
  • Recommended
I have several Milwaukee tools in my arsenal of cordless power tools and this grinder is a much n...
I have several Milwaukee tools in my arsenal of cordless power tools and this grinder is a much needed addition. Ive used a corded grinder for years and have been fortunate that I can bring my work piece to the tool but this is a game changer. As with all of my Milwaukee tools, this grinder is quality made and little heavier that I expected. The kit I got comes with 2x 6ah batteries that one of should get me through most of my projects. Also came with a heavy duty bag and charger to lug everything around in. Milwaukee makes great tools that will hang in with you for the long haul!
by
  • Recommended
Another high quality grinder added to Milwaukee’s lineup of power tools. Quick overall of the se...
Another high quality grinder added to Milwaukee’s lineup of power tools. Quick overall of the set, you get the grinder, handle that has reduced vibration technology, type 27 guard for your angle grinder, the disc change tool, 2 6.0 xc high output batteries, a rapid charger and the standard medium size contractor bag. The inclusion of the rapid charger is nice since the set comes with the high output batteries. The 6.0 batteries that come with the set are perfect for the tool. The grinder is well balanced with the 6.0 battery but I did try it with the 8.0 and 12.0 batteries, it was a decent balance still but was a little back heavy especially on the 12.0 but was still manageable. The grinder is a slide switch grinder with lock on capabilities. I was originally not thinking I would like that but after using it for awhile really liked the lock on feature that you don’t get with a paddle switch grinder. The grinder itself can take wheels from 4 1/2” to 5” and has a no load rpm of 8,500 rpm. The grinder also comes with that nice tool free guard change that I love, so easy to rotate the guard when you need to change your approach. You also get an anti vibration handle that you can position on the left or right side of the grinder. Still wish that Milwaukee would give you the option to position it on top of the grinder head but not a deal breaker. The grinder also comes with e clutch for kickback protection and overload protection but does not come with the rapid stop like other Milwaukee grinders feature. Wished they would have added that but still stops in a decent amount of time. Performance wise the angle grinder was great and very easy to handle under soft pressure, medium pressure and heavy pressure placed on the tool. I used the grinder to cut through some rebar and would agree that you probably can get around 135 cuts of 1/2” rebar. I also used it to do some sanding on just some hardwood with medium to heavy pressure and would say that you can probably get close to 40 minutes of sanding on a fresh 6.0 battery. I really like the lock on feature when it comes to sanding and if you are into power carving I would think that feature might be very beneficial. Other items of note for the grinder is that you get a 5 year warranty on the tool and 3 year warranty on the battery. Overall I would definitely recommend this grinder. It had a lot of good features, is very easy and smooth to use, and comes Milwaukee’s 5 year warranty on the tool. The tool is well balanced with the battery attached and weighs under 6lbs. You really should consider this grinder if you are in the market for a new one.
by
  • Recommended
Showing 1-10 of 18 reviews