Model # 5446-21

Internet #203000513

Store SKU #659014

Milwaukee SDS-MAX Demolition Hammer


SDS-MAX Demolition Hammer

  • Powerful 14-amp 1,300 MWO Milwaukee motor
  • Provides best-in-class power and highest overload protectio
  • 5 year limited tool warranty
$59900 /each
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Frequently Bought Together

Product Overview

Get best-in-class power and the highest overload protection for the toughest demolition jobs. The Milwaukee 5446-21 SDS-MAX Demolition Hammer has a heavy-duty crank piston mechanism that delivers 8.8 ft. lbs. of impact energy for hard-hitting performance in any concrete. For lighter applications, the two-speed impact mode allows you to reduce BPM to 2,200. Advanced Constant Power Technology electronics and a mechanical clutch enhance your control and the rotary hammer’s long-term durability. The Anti-Vibration System and side D-handle ensure safe, comfortable use. The tool comes with a carrying case.

  • 2-speed impact mode: use low (2,200 BPM) for light materials or high (2,840 BPM) for the toughest concrete
  • Powerful 14 Amp 1,300 MWO Milwaukee motor: provides best-in-class power and highest overload protection
  • AVS Anti-Vibration System: minimizes vibration for maximum comfort
  • Mechanical clutch: protects the motor when the bit binds
  • Variable-position chisel stop: fixes the chisel in 12 positions for various applications
  • Specially designed D-handle provides enhanced grip and control
  • Heavy-duty crank piston mechanism: provides 8.8 ft. lbs. of torque for hard hitting performance
  • CPT (Constant Power Technology): delivers consistent performance when the tool is under load
  • Includes: (1) 5446-21 1-3/4 in. SDS-MAX demolition hammer, (1) carrying case, (1) side handle
  • Click here for more information on Electronic Recycling Programs

Info & Guides

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Name 1-1/8 in. SDS-Plus Rotary Hammer SDS-MAX Demolition Hammer M18 FUEL 18-Volt Lithium-Ion Brushless 1 in. SDS-Plus Rotary Hammer and Hammervac Dedicated Dust Extractor Kit 1-3/4 in. SDS-Max Rotary Hammer
Brand Milwaukee Milwaukee Milwaukee Milwaukee
Ratings (14) (4) (2) (2)
Chuck Size 1-1/8 In. 1 In. 1 In. 1-3/4 In.
Power Tool Features Case Included Keyless Chuck,Variable Speed Brushless,Case Included,Depth Guage,Keyless Chuck,Side Handle,Variable Speed Case Included
Cordless/ Corded Corded Corded Cordless Corded
Chuck Type SDS-Plus SDS-Max SDS-Plus SDS-Max
Number of Batteries Included 2
Voltage (volts) 18
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Maximum hole diameter (in.)
Product Depth (in.)
Product Height (in.)
Product Width (in.)


Amperage (amps)
Blow energy (ft.-lb.)
Chuck Size
1 In.
Chuck Type
Clamshell/Jam pot
Color Family
Cord Length (ft.)
Corded Tool Type
Rotary Drill
Cordless/ Corded
Drill/ Driver Type
Hammer Drill/ Driver
Forward/reverse switch
Forward switch and reverse switch
Maximum Speed (rpm)
Power Tool Features
Keyless Chuck,Variable Speed
Product Weight (lb.)
Tools Product Type
Power Tool
Variable Speed

Warranty / Certifications

Certifications and Listings
1-UL Listed,CSA Listed
Manufacturer Warranty
5 Year Limited Warranty

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Customer Questions & Answers

What size are the brushes

Asked by: Juice
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Customer Reviews

SDS-MAX Demolition Hammer is rated 4.0 out of 5 by 4.
Rated 5 out of 5 by from Powerful Demolition Hammer We purchased this demolition hammer to demo floor tiles in our house. This is actually overkill as it's very powerful. However, most Home Depots don't carry the next model down. This equipment works really well and makes removal of floor tiles quick and easy. Just a note: the handle can be swiveled around to make it like straight with the user. For some reason, the Pro Desk at Home Depot and even the customer service people both at the store and over the phone didn't realize that. We figured it out ourselves.
Date published: 2016-08-03
Rated 5 out of 5 by from Fantastic tool Used this tool to demo about 750 sq ft of tiles throughout my house. Using a Bosch tile chisel bit made easy work for removing floor and wall tiles. I have done this job previously using hammers and pry bars and this cut the work load by 75%. Took longer to clean-up then to demo.
Date published: 2016-10-18
Rated 1 out of 5 by from You get what you pay for ... Quick HD stop to keep a job rolling and replace an old Hilti that finaly bit the dust. I read the other review on here and think it must have been written by Milwaukee's PR team. The joy of saving a few bucks was short lived after I started to use it. Fatigued and frustrated I retired this drill after 1 week and replaced wit anot her Hilti. Booooooo
Date published: 2016-03-31
Rated 5 out of 5 by from This tool is AMAZING!! I have had the opportunity now to use this SDS-MAX Hammer from Milwaukee on several jobsites and in various applications. Having said that, I can honestly say that this thing is, without a doubt, the best money I've spent on any tool that I have ever purchased. It was made to perform at such a high level that I'm really quite amazed that it isn't more expensive. This rivals tools that are 2-3 times more money, and I find myself actually excited when I have a day in which I know I will be breaking it out for use. Word of caution, however. Be careful if ever lending out a tool. Others will try and hang onto this one, usually wearing out any welcome for getting it again in the future. All said and done, at the end of the day this tool has never disappointed. Something that I can rarely say with conviction. Great Job Milwaukee Tools!
Date published: 2016-03-18
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