45mm (1-3/4") Rotary Hammer

DH45ME

Feature

AC Brushless Motor

Maintenance-free

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 and highest demolition performance in its class even at voltage drop

The efficient brushless motor offers higher drilling performance even with an extension cord used.

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

The high efficiency brushless motor and the optimized hammering mechanism achieve the fastest drilling speed*
and the highest demolition performance* in its class.

  • As of March 2015. Among 45mm class rotary hammers made by leading power tool manufacturers,
surveyed by Koki Holdings.

 

Our original, pendulum dynamic vibration absorber (Only for DH45MEY)

reduces the vibration from concrete drilling or chiseling by moving a weight and a leaf spring in the opposite direction
to the movement of the hammer.

Vibration-absorbing handle

provides high vibration-absorbing effect by employing both transatory and hinge units.

 

The internal double-insulation construction with a very sturdy aluminium die-cast body and a plastic internal stator holder

makes the housing more rigid, significantly enhancing durability of the motor unit.


Control panel



1. Push-button, constant speed control with variable speed

Due to the 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.

 

Display Lamp

       

No Load Speed

110V
120V
127V

120/min

170/min

220/min

270/min

220V
230V
240V

120/min

180/min

240/min

310/min

Full Load Impact Rate

110V
120V
127V

1,200/min

1,600/min

2,100/min

2,500/min

220V
230V
240V

1,200/min

1,700/min

2,300/min

2,950/min


2. Power Lamp
lights up when the plug is inserted into an outlet.


One push action for quick bit mounting

  • A bit can be mounted by simply inserting it into the tool holder.

Large change lever

  • An up-sized mode change lever is located on the top of the tool body for easier handling.


Large trigger switch

  • Upsized, easy-to-grip trigger switch for more control.


Continuous operation function (available for the Hammering Mode)

  • keeps the tools running even after the trigger switch is released, making chiseling easier.


Specifications

Capacity

Drill bit: 45mm (1-3/4")
Core bit: 125mm (4-29/32")

Power Input

1,500W

Bit Shank

SDS max

No Load Speed

110V, 120V, 127V: 120 - 270/min
220V, 230V, 240V: 120 - 310/min

Full Load Impact Rate

110V, 120V, 127V: 1,200 - 2,500/min
220V, 230V, 240V: 1,200 - 2,950/min

Overall Length

535mm (21-1/16")

Weight (including side-handle)

9.0kg (19.8lbs.)

Vibration Total Values
(triax vector sum)*

Hammer drilling 
into concrete

Vibration emission value : ah, HD = 13.5m/s2
Uncertainty K = 1.5 m/s2

Equivalent chiselling value

Vibration emission value : ah, CHeq = 14.2m/s2
Uncertainty K = 1.5m/s2

Standard Accessories

Side Handle, Stopper, Rotary Hammer Grease A, Carrying Case

  • The tri-axial vibration values were measured according to EN60745-2-6.
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