Makita DHR400ZK 36-Volt (18V x 2) LXT Lithium-Ion 1-9/16 in. Brushless SDS-Max Rotary Hammer with AWS (Tool Only)

Item No. 27490
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Makita DHR400ZK 36-Volt (18V x 2) LXT Lithium-Ion 1-9/16 in. Brushless SDS-Max Rotary Hammer with AWS (Tool Only) has variable speed, Auto-Start Wireless System (AWS) technology, and Wireless Dust Collection technology.


  • 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
  • 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


  • Straight Side Handle
  • D-Style Side Handle
  • Cleaning Cloth
  • Bit Grease
  • Depth Gauge
  • Plastic Carrying Case
  • Batteries and Charger Sold Separately


Battery CapacitiesTwo 18V Li-Ion
Concrete (TCT)1-9/16" (40 mm)
Concrete (Core Bit)4-1/8" (105 mm)
Impact Energy11.4 J (8.4 ft. lbs)
No Load Speed250 - 500 RPM
Blows Per Minute1,450 - 2,900 BPM
Vibration Level5.0m/s²
Noise Level91 dB(A)
Overall Length18-5/8" (473 mm)
Net Weight15 lbs (6.8 kg)