Introducing the 40mm SDS-Max Brushless Rotary Hammer DH40MEY2(H1Z) from HiKOKI, a powerhouse for concrete work.

With a 40mm drilling capacity, it offers high-speed drilling and efficient chiseling in 2 Modes. Weighing 1.3kg less than its predecessor, it ensures optimal control and ease of handling. The brushless motor enhances durability, while UVP minimizes vibrations for comfortable extended use. RFC guarantees user safety by halting rotation during tool overload. The lock-on function simplifies continuous chiseling, and the 4-stage electronic speed switch ensures precision. Elevate your construction projects with this lightweight, powerful rotary hammer from HiKOKI.

Product Features:

  • 9.2J high impact energy value, ensuring rapid drilling speed and exceptional chiseling performance.
  • Enjoy easy handling and precise control with its lightweight design, 1.3kg lighter than its predecessor model.
  • Experience extended comfort and reduced risk of vibration-related injuries thanks to UVP (User Vibration Protection).
  • Benefit from a longer tool life and low maintenance with the durable and potent AC brushless motor.
  • Ensure user safety and smooth operations with RFC (Reactive Force Control), which detects tool overload and halts rotation.
  • Facilitate continuous use and simplify chiseling operations with the convenient lock-on function.
  • Attain precision and optimal control through the 4-stage electronic speed switch and constant speed control.



  • Drilling holes in concrete and drilling anchor holes.
  • Demolishing and chiseling concrete, edging, gravel road digging, compacting and tamping, grooving, cutting, stripping, roughing and more.



  • Includes 3 Years Standard Warranty with an additional 3 Years when registered online. Click here to register.


Power Supply

AC 240V

Bit shank



Concrete - drill bit

Concrete - core bit



Input power


No load speed

250~500min -1 (times/min)

Full load impact

1,400 ~ 2,800min -1 (stroke/min)




6.8kg (with side handle) / 6.5kg (without side handle)

Dimensions (L x H x W)

471 x 252 x 107mm

Standard accessories

Side handle, stopper, grease, plastic case

Related Documents

DH40MEY2(H1Z) - Hi res image
DH40MEY2(H1Z) - Product Specification Sheet
DH40MEY2(H1Z) - Product Card
DH40MEY2(H1Z) - User Manual
DH40MEY2(H1Z) - Parts Diagram