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Model #2981-20

Store SKU #1004157090

Store SO SKU #1004157090

M18 FUEL 18-Volt Lithium-Ion Brushless Cordless 4-1/2 in./6 in. Grinder with Slide Switch with Lock On (Tool-Only)

$22900
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  • Generates 13A corded power
  • Rapid stop braking feature brakes accessories in under 3 seconds
  • Fully compatible with the M18 system, featuring over 200+ tools
  • View More Details
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Price:
$22900

Product Overview

This 8-Volt Lithium-Ion Brushless Cordless 4-1/2 in./6 in. Grinder is a small angle grinder that's big on performance. It has a 6 in. grinding capacity and generates the same power as a 13 amp corded grinder. The POWERSTATE brushless motor delivers 9,000 RPM. REDLINK PLUS intelligence provides maximum use and protects the grinder from overload, overheating and over discharge. The rapid stop brake feature stops all accessories in under 3 seconds to maximize safety. This cordless grinder tackles your toughest grinding, surface preparation and cutting applications. The M18 REDLITHIUM HIGH OUTPUT XC6.0 battery delivers more material removed per charge and unmatched run-time in all applications. It also offers tool-free accessory changes using the FIXTEC nut and tool-free guard adjustments, so you experience less downtime as you work. The grinding wheel is sold separately.
  • POWERSTATE brushless motor: purposely built for the M18 FUEL 4-1/2 in.- 6 in. braking grinder to provide the power and performance of a 13 Amp corded grinder
  • REDLINK PLUS intelligence: ensures optimal performance and provides overload protection to prevent damage to the tool and battery during heavy applications, while still maintaining compatibility across the entire M18 system
  • REDLITHIUM HIGH OUTPUT XC6.0 battery pack: provides 50% more power and runs cooler versus M18 REDLITHIUM XC battery packs
  • Superior pack construction provides the industry's best protection against jobsite conditions
  • Rapid stop braking feature stops all accessories in 3-seconds or less
  • Metal housing and gearing system provides legendary durability
  • 100% tool free: make all accessory changes and guard adjustments without a wrench for increased productivity
  • Compatible with all M18 batteries
  • Includes: 2981-20 M18 FUEL 4-1/2- 6 in. grinder, slide switch, lock-on, type 27 6 in. guard, side handle, FIXTEC nut, backing flange, wrench
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BrandMilwaukeeMilwaukeeMilwaukeeMilwaukee
NameM18 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./6 in. Grinder with Slide Switch with Lock On (Tool-Only)M18 FUEL 18-Volt Lithium-Ion Brushless Cordless 4-1/2 in./6 in. Braking Grinder with Paddle Switch (Tool-Only)M18 FUEL 18-Volt Lithium-Ion Brushless Cordless 7/9 in. Angle Grinder W/ HIGH OUTPUT XC 8.0Ah Battery
Price
$21900
$22900
$22900
$46900
Ratings
(17)
(95)
(227)
(202)
Cordless/ CordedCordlessCordlessCordlessCordless
Wheel Diameter (in.)4.5 in669 in
Power Tool FeaturesNo Additional FeaturesBlade Guard System,LED Light,Variable SpeedAdjustable Handle Position,No Tool Wheel Change,Spindle Lock,Variable SpeedAdjustable Handle Position,No Tool Wheel Change,Spindle Lock
Amperage (amps)0 A0 A0 A0 A
Voltage (volts)18181818
Battery Amp HoursNo BatteryNo BatteryNo Battery8 Ah
Motor TypeBrushlessBrushlessBrushlessBrushless
Battery/ChargerTool OnlyTool OnlyTool Only(1) 8 Ah Battery Included
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Specifications

Dimensions

Product Depth (in.)
12.45 in
Product Height (in.)
11.41 in
Product Width (in.)
7.08 in
Wheel Diameter (in.)
6

Details

Amperage (amps)
0 A
Arbor Size
0.625
Batteries Included
No
Battery Amp Hours
No Battery
Battery Power Type
Lithium Ion
Battery Size
18-volt,M18
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
No
Grinder Switch Type
Sliding Switch
Included
No Additional Items Included
Maximum Speed (rpm)
9000
Motor Type
Brushless
Number of Total Batteries Included
0
Power Tool Features
Blade Guard System,LED Light,Variable Speed
Product Weight (lb.)
4.5 lb
Returnable
90-Day
Tools Product Type
Power Tool
Variable Speed
No
Voltage (volts)
18

Warranty / Certifications

Certifications and Listings
UL Listed
Manufacturer Warranty
5 Year Warranty

Questions & Answers

Typical questions asked about products:

  • Is the product durable?
  • Is the product easy to use?
  • What are the dimensions of the product?

Customer Reviews

  • 5
    out of 82 reviews
  • 100% recommend this product
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Showing 1-10 of 82 reviews
This grinder works really nice, just as good as a...
This grinder works really nice, just as good as a corded grinder. I am particularly enjoying the rapid stop. Usually I'll have to wait till it stops then rest it down or put it on the side with the disc facing up but no more.... Loving this grinder....
by
  • Verified Purchase
If you need an all-in-one kit for a medium sized cordless grinder, look no further. This Milwauke...
If you need an all-in-one kit for a medium sized cordless grinder, look no further. This Milwaukee M18 grinder is versatile in that it can be used with 4-1/2 up to 6" blades and attachments. It comes with a XC 6.0Ah battery, rapid charger, toolless guard and a wrench to tighten and loosen the main nut. It offers plenty of power with the XC6.0 and will accept smaller and larger M18 batteries as well, if you have them or desire them. It all comes in a nice soft zippered canvas bag for storage. I used to like the hard cases but these bags care now my favorite. Besides being portable and versatile in size, another feature I love is the Rapid Stop system that stops the grinder from spinning in under three seconds after the switch is released. Not only does that save time from holding the grinder, waiting for it to stop spinning, it helps prevent an accident if someone happened to set it down while it was still spinning. I added a dollar bill in the picture for size reference. I wanted to do so because this is a slightly bigger grinder than the other 4-1/2" grinders because it is designed for up to 6" accessories. While that is versatile it may require some to use two hands when using the grinder, something that should be done anyway for safety. But worth mentioning. Whether you need a portable grinder for home use or need to use one professionally in the building trades, this grinder is for you.
by
  • Recommended
2 people found this helpful
This is a powerful, rugged grinder that can handle up to 6" wheels/discs. This model has the sli...
This is a powerful, rugged grinder that can handle up to 6" wheels/discs. This model has the slide switch on top for keeping the grinder on for continuous use. This model has the newer "FIXTEC nut", which allows for tool-free wheel changes. It also has the newer spring-loaded clip design for the guard, which will work with the newer attachments, such as the "Surface Grinding Dust Shroud" (part 49-40-6101) vacuum attachment. The construction is solid and heavy duty, with a comfortable rubberized grip. The motor is very powerful, and you can feel the torque when the tool is turned on. This 6" model is noticeably larger and heavier than the 5" model. If you don't need the 6" capacity, I find the lighter and smaller 5" model easier to work with, particularly for small or quick jobs. But if you need the 6" capacity, need to cut larger material, or are doing heavier work or larger projects, this 6" model provides the extra capacity and power. The Rapid Stop Brake feature is nice, as it reduces braking time, allowing me to put the tool down quicker. This kit comes with a fabric carrying case, which is much more compact and more convenient for me than the large plastic case from my older model. It also comes with a side handle. The included XC6.0 battery pack is pretty large (only slightly smaller than the XC9.0 packs), but it helps to balance the tool. I now have quite a few of the excellent M18 batteries for my other Milwaukee tools, and they have all worked perfectly. Also, the Milwaukee warranty service is excellent. I've only had to have one Milwaukee tool repaired, but I was able to drop it off at a local service center, and they shipped the repaired tool to me, no charge.
by
  • Recommended
I love this grinder. I mostly use an angle grinder for wood carving. That usually means walking a...
I love this grinder. I mostly use an angle grinder for wood carving. That usually means walking around the piece a lot. Which with a traditional grinder also means tripping over cords or constantly moving them out of the way so I don't cut them. However my favorite feature here is the brake. I use chainsaw disks to carve. It's fairly dangerous even when used safely. There is a constant kickback risk. The brake really mitigates that risk. I almost don't feel safe using my corded Milwaukee grinder anymore. It has all the power of corded for sure, and comes with the 6ah XC battery. Because I am already invested heavily in the M18 ecosystem, I have a lot of batteries (including the big 9ah) at the ready so long carving sessions and running out of juice isn't an issue. I also really like the tool-less arbor nut. The soft case is nice, but I'd personally opt for a hard case and will probably custom fit some foam in a Milwaukee Packout for this. This is a game changing tool. Especially for those who need a good, powerful grinder in the field away from a power source
by
  • Recommended
2 people found this helpful
This Milwaukee grinder features a 9000 RPM brushless motor with electronic braking that stops the...
This Milwaukee grinder features a 9000 RPM brushless motor with electronic braking that stops the disc within 3 seconds (Milwaukee claims 1.5 seconds for cutting discs, 2 seconds for flap discs and 2.5 seconds for grinding discs). While it is bigger than a corded grinder, it is well balanced and feels good in hand. I like the ability to change between 6 inch discs and 4-1/2 inch discs. Unfortunately, only the 6 inch type 27 guard is included and nothing in the manual or Milwaukee’s site indicates the part number to order the 4-1/2 inch or 5 inch compatible guards. Finding 6 inch cut off wheels was fairly easy. However a type 27 grinding wheel in 6 inch was very difficult to find. Most grinding wheels are 5 or 7 inches. The grinder features a FIXTEC nut for tool free disc changes but I found they nut gets tight and I had to revert to the included bi-pin wrench to break it loose. Another feature of this product is the tool free guard adjustment. It has five different positions it can lock into. A simple press of a small spring loaded lever allows one to twist the guard to the various positions. Unfortunately, on my product, the guard was incorrectly installed and would not move. I had to loosen a Phillips screw on the guard, install it to its proper location and then tighten the screw. A simple process to correct but it is something that should have been caught on the assembly line. The included charger is a Rapid Charge model which will charge the battery in about half the time of the standard charger. The kit includes a durable bag, the grinder, a type 27 six inch guard, side handle, dust screen, wrench, two M18 XC6.0 high output batteries and the rapid charger. There are two models of this grinder. The one I used has a locking slide switch on the top. The switch is plastic and the locking point is also plastic. I worry the locking point may wear out over time. The switch is fairly small but activates without issue and unlocking is a simple press at the back of the switch. The other model of this product has a paddle switch on the bottom which is not lockable. Everything else is the same between the two models. In my testing I used a 6 inch cut off wheel with a 5/8 inch arbor hole as well as a 6 inch grinding wheel with a threaded mount to cut and grind on a 1/2 inch thick steel bar. I could tell no difference in power between this battery operated model and a corded model. Overall this is an outstanding product and recommended if you have a need for a battery based grinder. However, I did knock off one star because of the improperly installed guard lock mechanism. Not providing information for alternate size guards is disappointing.
by
  • Recommended
5 people found this helpful
This has a lot of power and the 2 XC6.0 batteries provide it with good run time. Kit includes the...
This has a lot of power and the 2 XC6.0 batteries provide it with good run time. Kit includes the grinder, 2 batteries, charger, side handle, accessory nut wrench and carry bag. It uses the FIXTEC nut which allows you to change accessories without using tools. Flip the black half circle ring up and you can use your hand. Works well even when using gloves. This has been around for a while but it's the first time I'm seeing it. The switch locks in the on position which is nice since it sometimes feels uncomfortable to use. The brake is a welcome feature. It stops the blade spinning within 3 seconds. Blade guard is easy to adjust without tools. It's easy to forget you're using a cordless tool when you see how much power this has. The Milwaukee M18 batteries with REDLITHIUM batteries and the REDLINK Plus Intelligence perform incredibly well and last a long time. I haven't had one fail yet and I've tried to make them overheat and overload.
by
  • Recommended
2 people found this helpful
The Milwaukee Brand, M18 FUEL 18-Volt Lithium-Ion Brushless Cordless 4-1/2 in./6 in. Grinder with...
The Milwaukee Brand, M18 FUEL 18-Volt Lithium-Ion Brushless Cordless 4-1/2 in./6 in. Grinder with Slide Switch and Kit, plus (1) 6.0 Ah Battery is a tool for the professional tradesman and avid DIY home owners alike. Really, there is absolutely no need for a corded angle grinder except for the biggest jobs that might be encountered with this Milwaukee, M18 FUEL 18-Volt Lithium-Ion Brushless Cordless angle grinder. The lithium battery powering this grinder is big and long lasting. While not the largest battery Milwaukee offers, it is a good match for this angle grinder based on weight and balance verses battery life. This is such a versatile angle grinder, for cutting stone, cutting concrete roof tiles, grinding metals and sanding wall surfaces, it is likely the only grinder a contractor or DIY home owner may ever need. To say it is impressive, is to say it is just another good angle grinder. This grinder is really outstanding with one little frustration. Due to the very efficient and powerful permanent magnet motor of this grinder, it makes the spindle lock a bit difficult to use. Not impossible, just somewhat difficult. A very strong permanent magnet motor is employed in this grinder for power and efficiency, but moves past the internal magnets quickly and with force, making the spindle lock somewhat difficult to engage. Not impossible, just more difficult than a non-permanent magnet motor. The grinder comes with a storage bag, that I really like. Some DIY home owners might prefer plastic storage cases, however as a handy man, I prefer a bag as I can usually fit the other tools I need in the bag for a customer’s job. I am not a contractor, yet still I would prefer a bag if I were. I wish every tool in my tool box were “Milwaukee Red,” really, Milwaukee makes some of the finest tools anyone will ever own.
by
  • Recommended
This thing is a beast! This battery powered braking grinder kit made by Milwaukee completely out ...
This thing is a beast! This battery powered braking grinder kit made by Milwaukee completely out performs every A/C powered angle grinder I have ever used. It doesn’t seem to spin as fast but the torque of the brushless motor in this grinder is amazing and more than makes up for it. The battery life is outstanding. This grinder seriously cuts twice as fast as my A/C powered one, and with this one, I don’t have to worry about cutting the cord off, or setting it down to fast because it stops spinning almost immediately after letting go of the push button. My one complaint with this grinder is the slide switch can be cumbersome to operate when using the grinder in certain positions. Milwaukees grinder kit will hold accessories from 4 1/2 to 6 in. I am currently using 5 in. The position of the guard can be rotated or removed tool free. The disks can also be changed tool free but if they happen to get to tight, Milwaukee provides the wrench to loosen it. The included charger is a fast charger that will charge both the M18 and M12 batteries. This kit also comes with a red lithium high output XC6.0. Everything included in this kit fits nicely into the tough bag it comes with.
by
  • Recommended
This Milwaukee FUEL M18, 18-Volt 4-1/2 in. - 6 In. Grinder with Slide Switch Kit is GREAT! I prefer the slide switch over a paddle for working in various positions, where the paddle can be a bit difficult to operate safely. This kit includes 2 XC6Ah battery packs, a 18V/12V Rapid Charger, accessory nut wrench and a good bag. I’ve had several 4/4-1/2 in. corded grinders, as well as a Milwaukee Industrial duty 7 in. grinder over the years. However, this will be my go-to grinder from now on. The first thing I noticed when I charged the battery packs was that the Rapid Charger “sings” while charging, due to the high amp output. It charges much faster than the other chargers. The grinder is well-balanced and easy to handle, with plenty of power. The Rapid Stop Brake is very good, stopping in <3 seconds from switch release. The very convenient FIXTEC nut works well and means no tools needed to change “most” accessories. The guard is very easy to adjust to 5 different positions with the press of a lever, again with no tools needed. Unfortunately, no one in Tucson has ANY 6 in. grinding wheels, or Milwaukee 6 in. cutoff wheels, so I used a 4-1/2” grinding wheel, and flap wheel to grind a couple of old weld beads off my bench, where someone decided to check their welder settings. Worked great, but 6 in. wheels would have been better to reach into the bottom of the 4 in. angle iron, not to mention that more surface area removes more metal faster. I went to HD and bought another brand of 4-1/2 in. sanding pad backer and pads for finishing that area (the nut for this required a different wrench). I bought two other branded 6 in. cutoff wheels for use in cutting the welds from the old axle and spacers off of my old tiller because the replacement wheels require a smaller diameter axle. All told, I fabricated several new pieces, as well as spacers to raise the engine, to make the axle work. In addition to the 5/8 in. axle and washers, I made a number of cuts in 1/8 in. x ½ in. angle iron and several cuts in 1/8 in. x 1 in. flat stock, and used the grinding wheel to square things up. This grinder worked quite well. I found that the XC6Ah battery packs run for about 30 minutes, and having the second one was good. In all, I went through 3 full charges. Given the 30 minute run time of the battery packs, I don’t think this grinder would be ideal for large industrial or fabricating work, but it sure is great for smaller jobs. Again, 6 in. grinding, wheels, flap wheels, and sanding disks would make the work go faster, and probably get more done on each charge. Hopefully HD will be stocking them soon.
by
  • Recommended
I received my Milwaukee fuel 18-volt brushless grinder today, and it comes with two 6.0 Ah batter...
I received my Milwaukee fuel 18-volt brushless grinder today, and it comes with two 6.0 Ah batteries. I like that this cordless grinder will accept 4-1/2 inch or 6-inch accessories. The brake is another nice feature, and the grinder stop s in 3 seconds when you let off the slide switch. This Milwaukee grinder has a tool-free design in that you do not need any tools to change any accessories or the guard. After trying this grinder on some angle iron, I can say it is just as powerful as any of my corded grinders, and with the 6.0 Ah batteries, it will last a long time. Overall all this cordless Milwaukee grinder is more powerful and will accept a larger grinding wheel (6- inch) than my other brand of cordless grinders. This Milwaukee grinder will now be my go-to grinder for everything from welding to sharping mower blades. Another nice feature is it comes in a heavy duty large tool bag that is capable of carrying additional accessories.
by
  • Recommended
Showing 1-10 of 82 reviews