Rotary Hammer DH40MEY 40mm

The product life cycle is significantly extended by eliminating troubles with armature burnout, layer short and commutator wear. Besides, no carbon brush replacement is required.

Fastest drilling speed in its class even at voltage drops
Efficient brushless motor offers higher drilling performance even with an extension cord.

Compatible with engine generators
Designed to be powered by engine generators as well, thanks to Our original compact and high efficiency inverter circuit.

Fastest drilling speed and highest demolition performance in its class

Highest Demolition Performance and Fastest Drilling Speed in its class
Achieved by high efficiency brushless motor and optimised hammering mechanism.

Highest Demolition Performance / Fastest Drilling Speed in its class

User Vibration Protection

Our original, spring-type dynamic vibration absorver with a weight and two springs moves in the opposite direction to the vibration direction of the main body. This results in reduced vibration and improved operating efficiency.

Spring-type dynamic vibration absorber
Vibration-absorbing handle
Vibration-absorbing mechanism with the transatory unit and the Neidhardt spring provides high vibration-absorbing effect.

High durability

The internal double-insulation construction with a very sturdy aluminium die-cast body and a plastic internal stator holder, is incorporated.
This makes the housing more rigid, significantly enhancing durability of the motor unit.

Almimium Housing Body
Improved handling

Push-button, constant speed control with variable speed
Equipped with a built-in electronic control circuit that can adjust the impact rate according to applications. Four-step impact rates can be selected by the rotation speed selector switch.

One push action for quick bit mounting
A bit can be mounted by simply inserting it into the tool holder.

Large change lever
Up-sized mode change lever is located on the top of the tool body for easier operation.

Large trigger switch
Up-sized, easy-to-grip trigger switch for more control.

Specifications

Capacity Drill bit: 40mm (1-9/16")
Core bit: 105mm (4-1/8")
Power Input 1,150W
Bit Shank SDS max
No Load Speed 250 - 500 / min
Full Load Impact Rate 1,430 - 2,850 / min
Overall Length 477mm (18-4/5")
Weight (including side-handle) 7.5kg (16.5 lbs.)
Vibration Total Values
(triax vector sum)* Hammer drilling
into concrete Vibration emission value : ah, HD = 8.0m/s2
Uncertainty K = 1.5 m/s2
Equivalent chiselling value Vibration emission value : ah, CHeq = 7.3m/s2
Uncertainty K = 1.5m/s2
Standard Accessories Side Handle, Stopper, Rotary Hammer Grease A, Carrying Case