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1-9/16" Cordless Rotary Hammer with Brushless Motor, AWS & AFT
Owners Manual Parts Breakdown Print
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AWS Technology
Anti vibration Technology

Carrying Case

LXT Technology
Active Feedback technology
LXT Technology
Model No: DHR400T2N

Variable Speed

Auto-Start Wireless System (AWS) Technology Features Wireless Dust Collection Technology!

Hammer & Rotation / Hammer Only SDS-MAX Shank

  • AWS (Auto-Start Wireless System) uses Bluetooth® technology to communicate between tool and vacuum and enable wireless control when used with Makita AWS cordless tools
  • Advanced Anti-Vibration Technology (AVTTM) system incorporates vibration absorbing housing, active dynamic vibration absorber and damper spring to actively counteract the vibration of the tool for greatly reduced transmission to the operator
  • eXtreme Protection Technology (XPT) offers maximum protection against dust, debris and liquids for optimal performance in extreme conditions
  • Active Feedback sensing Technology (AFT) automatically shuts down the tool if there is a sudden drop in rotation speed (e.g. kick-back)
  • Brushless DC motor with high power to weight and size ratio
  • Brushless DC motor generates less heat buildup and is ideal for prolonged use in manufacturing / production applications
  • 2 Operating Modes: Rotation / Rotation + Hammer
  • Trigger-lock button prevents accidental start-up for increased safety
  • Torque limiter stops bit rotation if bit jams for increased operator safety and tool protection
  • Soft start feature gradually increases speed to eliminate start up shock
  • No load motor suppression limits vibration and bit deflection when idling
  • Variable speed dial allows operator to adjust speed based on materials or application
  • Constant speed control maintains constant speed under heavy load
  • One-touch SDS-MAX sliding chuck for easy bit installation and removal
  • Dual LED job light with pre-glow and after-glow features illuminates work area
  • Ergonomic soft rubber grip design for vibration absorption and comfortable operation
  • Includes straight (drilling) and D-style (demolition) handles
(Bluetooth® is a registered trademark of Bluetooth® SIG)


INCLUDES: Two 18V (5.0 Ah) Li-Ion Battery BL1850B, Dual Port Rapid Charger (DC18RD), Straight Side Handle (123138-5), D-Style Side Handle (196792-8), Cleaning Cloth (443122-7), Bit Grease (194683-7), Depth Gauge (331955-1), Plastic Carrying Case (821746-3) 


Battery Capacities

Two 18V Li-Ion


Concrete (TCT)

1-9/16" (40 mm)

Concrete (Core Bit)

4-1/8" (105 mm)

Impact Energy

11.4 J (8.4 ft. lbs)

No Load Speed

250 - 500 RPM

Blows Per Minute

1,450 - 2,900 BPM

Vibration Level


Noise Level

91 dB(A)

Overall Length

18-5/8" (473 mm)

Net Weight

15.0 lbs (6.8 kg)

Cordless High-Visibility Fan Jacket with Brushless Motor

Cordless High-Visibility Fan Jacket with Brushless Motor

Cordless or Electric Jobsite Radio with Bluetooth®

Cordless or Electric Jobsite Radio with Bluetooth®

LED Pen Light

LED Pen Light

PREMIUM 6-Cutter SDS-MAX Rotary Hammer Drill Bits

PREMIUM 6-Cutter SDS-MAX Rotary Hammer Drill Bits

Rotary & Demolition Hammer Bit Grease

Rotary & Demolition Hammer Bit Grease

SDS-PLUS HSS-G Bright & Brad Point Drill Bits

SDS-PLUS HSS-G Bright & Brad Point Drill Bits

Tape Measures

Tape Measures

Note: Makita Canada reserves the right to change specification of products without notice. The contents of the parts breakdown and Instruction manuals may be different from current products.


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