Rotary Hammer DH40MEY2

Rotary Hammer DH40MEY2
  • The stopper and wing bolt are not included as standard accessories in all regions and countries.
  • Brushless motor
  • UVP
  • RFC
  • SDS max

Lightweight and Outstanding Drilling and Demolishing performance

Its lightweight design (0.7 kg lighter than the current model*1) allows for increased maneuverability and less user fatigue.
The high-efficiency brushless motor delivers speedy drilling and the highest demolishing performance in its classs*2.

  1. Compared with HiKOKI DH40MEY.
  2. As of July 1, 2023, among 40mm class corded rotary hammers made by leading power tool manufacturers. (Survey by Koki Holdings)

New Low Vibration Mechanism and Low Vibration Handle

  • 13% lower vibration than the current model*

    The new dynamic vibration absorber and low vibration handle significantly reduce vibrations for less user fatigue and improved operability.

    • Compared with HiKOKI DH40MEY.

Convenient Continuous Operation Function(only available for Hammering mode)

  • Continuous operation button keeps the tool operating even after the trigger switch is released, for less fatigue when chiseling for extended periods.

    Continuous operation button

  • Reactive Force ControlAgainst Sudden Overburdening

    RFC logo

    When the tool bit is suddenly overburdened during operation, the slip clutch works or the built-in controller stops the motor output before the entire tool jerks.

    Depending on the operating conditions, the Reactive Force Control function may not work or provide the specified performance. Please make sure that the workpiece is placed and supported properly, and that the main unit is held firmly during operation.
    RFC explanatory illustration

4-Step Push Button Rotation Speed Selection

  • Four power levels of impact and rotation speed to match versatile applications and improve productivity.

    Rotation Speed Selector Switch
Display Lamp
No Load Rotation Speed 250/min 340/min 420/min 500/min
Full Load Impact Rate 1,400/min 1,900/min 2,350/min 2,800/min


Capacity Drill Bit 40mm
Core Bit 105mm
Bit Shank SDS-max
No Load Rotation Speed 250 - 500/min
Full Load Impact Rate 1,400 - 2,800/min
Type of Motor Brushless motor
Power Input 1,150W
Impact Energy*1 9.2J
Dimensions (L x H x W) 471 x 252 x 107mm
Weight*2,3 6.8kg
Vibration Total Values
(triax vector sum) *4
Hammer Drilling
into Concrete
Vibration emission value ah, HD = 10.9m/s2
Uncertainty K = 1.5m/s2
Chiselling Value
Vibration emission value ah, CHeq = 10.6m/s2
Uncertainty K = 1.5m/s2
Standard accessories*5 Side Handle, Grease, Carrying Case
  1. Impact energy according to EPTA-Procedure.
  2. Weight includes the side handle and excludes the cord.
  3. According to EPTA-Procedure 01/2014.
  4. The vibration total values were determined according to EN62841
  5. Standard accessories vary by country or area.
  • Please contact local dealers for product availability and product details.