28mm (1-1/8") Rotary Hammer DH28PMY

Rotary Hammerl DH28PMY

Quick-release tool retainer

  • Makes it faster to switch between the SDS-plus drill bit holder and the drill chuck holder according to applications.

    Note : Turn the change lever to "Hammering only" mode when replacing a tool retainer with another.

    Quick-release tool retainer
    Installation: Mesh the lock grip with spline, push in and turn it.

    Removal: Turn the lock grip and pull out the SDS-plus drill bit holder or the drill chuck holder.

    Quick-release tool retainer Drilling in concrete and steel
Increased Durability

Approximately 2 times longer life *1 achieved by reliable structure that includes a hammering mechanism same as our large hammers.

High-durability hammering mechanism

1. Hammering mechanism features air channel system (NEW)
Up to 50% more volume of air cushion *1 reduces wear and damage inside cylinder.
2. Ball bearings (NEW)
Ball bearing seals in grease and holds temperature low to protect melt down of gear cover.
3. New internal pressure control mechanism (NEW)
Provides smooth airflow in or out of the gear cover to stabilize and ensure hammering action.

Faster Drilling Speed
  • Powerful motors and optimized hammering achieved up to 30% faster drilling speed *3 to improve work efficiency.

    Faster Drilling Speed
Reduction of vibration

Features User Vibration Protection (UVP) system that reduces the vibrations from concrete drilling or chiselling with resonance occured by moving a weight in the opposite direction to the movement of the hammer. Reduction of vibration by approximately 33% *1 makes operations more comfortable.

Vibration Protection (UVP) system

Located on the side of the tool body for easy operation

Large change lever (NEW)

  •   Rotation Only
     For drilling in steel or wood, etc.
      (With standard accessories drill chuck holder)

      Rotation + Hammering
     For drilling into concrete, etc.

      Hammering Only
     Chiseling of concrete or groove digging, etc.

    Large change lever
  • Angle adjustment function
    When using a cold chisel or cutter, the orientation of the tool tip can be adjusted by setting the change lever as shown on the left.

    Angle adjustment function

Soft and easy to grip for comfortable operation!

Double-molded side handle (NEW)

  • 360° rotation allows more effective operation.

    Side handle

Simple bit mounting

One-push action for quick bit mounting

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

    Simple bit mounting


Capacity: Concrete 3.4 - 28mm (1/8" - 1-1/8")
Capacity: Steel 13mm (1/2")
Capacity: Core bit 25 - 50mm (1" - 2")
Capacity: Wood 32mm (1-1/4")
Power Input 850W
Bit Shank SDS-plus
No-Load Speed 0 - 1,100min-1
Full-Load Impact Rate 0 - 4,300min-1
Overall Length : When mounting the drill bit holder 400mm (15-3/4")
Overall Length : When mounting the drill chuck holder 437mm (17-13/64")
Weight (excluding cord) *6 3.2kg (7.1lbs.)
Vibration Total Values (triax vector sum) *7
Hammer drilling into concrete
Vibration emission value ah, HD = 11.5m/s2
Uncertainty K = 1.5 m/s2
Vibration Total Values (triax vector sum) *7
Equivalent chiselling value
Vibration emission value ah, CHeq = 10.5m/s2
Uncertainty K = 1.5 m/s2
Standard Accessories Side Handle, Depth Gauge, Drill chuck holder, Carrying Case
  1. In comparison with conventional models DH24PC3 / DH24PB3
  2. As of May 2014. Among 2kg class rotary hammers made by leading power tool manufacturers, surveyed by Koki Holdings.
  3. A comparison of the model DH28PMY and the conventional model DH24PC3. Mean value for drilling into concrete with drill bits between 8mm and 28mm diameters. The results may vary depending on operating conditions.
  4. As of May 2014. Among 2kg class rotary hammers made by leading power tool manufacturers, surveyed by Koki Holdings.
  5. In comparison with conventional models DH24PC3 / DH24PB3.
  6. Weight: According to EPTA-Procedure 01/2003.
  7. The tri-axial vibration values were measured according to EN60745-2-6.

Note: Manufacturer reserves the right to change specifications of parts and accessories without notice. Specifications and standard accessories may vary from country to country.