Leading Innovative Company "Maruzen”
Japanese  

HANDHELD BREAKER / BH23K / BH23K28A

One of The Most Powerful Model in the Lineup

  1. Built for the toughest breaking jobs

    BH23K delivers the highest breaking force in our hydraulic breaker lineup.
    Designed for heavy-duty applications where power and reliability are critical.

    Ideal for:

    ①Thick concrete demolition

    ②Foundation and ground breaking

    ③Continuous, high-load operations

    When the job demands serious power, BH23K is the answer.

  2. Proven Productivity in Overseas Job Sites

    20–30% higher efficiency than 30 kg pneumatic breakers

    On job sites, users report 20–30% higher working efficiency compared to 30kg-class pneumatic breakers.

    User feedback includes:

    ①“We finish the same work noticeably faster.”

    ②“Impact is stable with less wasted blows.”

    ③“Power stays consistent even during long operation.”

     A proven replacement for heavy air breakers.

  3. Anti-Bouncing Function

    The chisel stays on target

    BH23K is equipped with an anti-bouncing function that prevents the chisel from rebounding at the breaking point.

    ①Precise, pinpoint breaking

    ②Reduced mis-hits and rework

    ③Higher efficiency with every blow

    You hit exactly where you aim.

  4. Powerful Yet Easy to Control

    Despite its high output, BH23K offers:

    ①Stable operation

    ②Excellent controllability

    ③Less dependence on operator experience

    This makes it a user-friendly heavy breaker that delivers consistent results, even with less-experienced operators.

    Ideal Applications

①Heavy concrete demolition

②Foundation and ground breaking

③Infrastructure and civil engineering projects

BH23K — Power You Can Control

Maximum force. Higher efficiency. Total confidence.

SPECIFICATIONS

Dimension (mm) BH23K: 690×420
BH23K28A: 702×420
Weight (kg) BH23K: 24.5 (Without tool)
BH23K28A: 24.8 (Without tool)
Working Pressure (MPa) 8~11
Max Pressure (MPa) 20.6
Oil Flow (ℓ/min) 20.5
Blow Per Minute 1000
Shank Size (mm) BH23K: Hex. 1″×4-1/4″ (25 x 108mm)
BH23K28A: Hex. 1-1/8″ x 6″ (28 x 153mm)
Coupling 3/8″ Couplers
Allowable Back Pressure (MPa) 2.5
Extension Hose (m) 3/8″×10(when used with unit)
Hydraulic Oil ISO VG32 (Standard) , ISO VG46 or equivalent
Anti-Bouncing Reduce bouncing makes operation easily.


SPECIAL TOOLS

 

PRODUCT MOVIES

HOW TO USE

When connecting this breaker to a power source other than Maruzen UH070 power unit, make sure the power source you intend to use is within the range (oil flow, pressure etc.) prescribed above.

 

PREPARATION

1. Unlock the latch on the breaker and insert tool (moil point etc.) Turn around the tool (Hexagon tool) if it stuck on the half way of inserting.

2. Lock the latch.  Make sure the tool is firmly fastened.

 

3.Make sure there is no dust or dirt inside couplers before connecting breaker to the hydraulic power pack.

 

4. Active the power source. (Start the engine on the power pack)

 

OPERATION

5. The breaker and the breaking target should be at a right angle.
 Press down the breaker with your body weight.
 Grip the control lever and start hammering.

 

 

6. Do not hammer the same place for over 30 seconds.
 If the target object does not break within 30 seconds, change the hammering point.

7. Do not blank hammering for over 10 seconds.

 

AFTER OPERATION

8. Stop the power pack when the job has completed.

9. Push up the tool so the piston return to the position.

10. Detach the extension hoses.

11. Attach both couplers which are on the breaker together to prevent dust and dirt entering.

12. Unlock Latch, remove the tool from the main body.

13. Remove mud and dirt on breaker thoroughly.

MAINTENANCE

1.DAILY INSPECTIONS

Check before each operation

1. Check if there is any oil leakage from hoses or breaker itself.

2. Check if there are any crack or damage in tools.

 

2.PERIODICAL INSPECTIONS

Ask your dealer for the periodical inspections.

Inspection Items Operating Hours
Nitrogen gas charge in accumulator 250 hours or 1 year
Replacement of accumulator diaphragm 500 hours or 2 years
Replacement of Valve Rod O-ring
Replacement of U-cup packing
Replacement of each O-Ring Every 3 years
Wear of Movable Bush 250 hours or 1 year
Grease Movable Bushy (8g) Every 50 hours

* Accumulator Nitrogen gas pressure: 3.5MPa (35.7kgf/㎠)

CONTACT US Q&A CATALOG DL