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Hydraulic Breakers

JMHB-H

JMHB

  • Komatsu carriers PC78 - PC490
  • Machine class (st) 4.4 - 66.1
  • Machine class (t) 4 - 60
  • Operating weight (kg) 365.0 - 3 261.0
  • Operating weight (lbs.) 804.7 - 7,189.3

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Exceptional impact energy

Bring outstanding impact energy to your job site with an accumulator-type hydraulic breaker effective in a variety of rock and concrete demolition applications. This fully hydraulic breaker is designed with features to enhance output power and efficiency and prevent overflow.

  • Accumulator-type
  • 100% hydraulic fired
  • Compact range: light, simple and built for reliability
  • Heavy range: powerful, dual-mode

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Features and benefits

Designed for long life

See your investment protected with a mounted automatic lubrication feature that guards against contamination caused by dust and debris, promoting a long breaker life. Standard on many models.

Equipped for dependability

You'll be equipped to keep your breakers performing optimally with an inspection kit that can assess routine maintenance needs, standard with all models.

Less vibration

Maximize operator ergonomics with a shock-dampening box bracket on the JTHB-G models and suspensions with rubber/poly components on the JMHB-H and -V models, which absorb impact and reduce vibrations through the boom.

Adaptable and versatile

Versatility to adapt to various rock types with two working positions to provide the appropriate frequency and energy per blow.

Noise reduction

Completely enclosed sound-dampening housings reduce noise generated vs. open style breakers.

Powerful compact range

Bring plenty of force to smaller excavators with compact models that use a single power cell without heavy tie rods, improving weight-to-power ratio.

Standard features

You get valuable features built right into your investment with standard features, such as automatic greasing, advanced blank firing protection, swivel hose couplings and heavy-duty housing.

Features

Designed for long life

See your investment protected with a mounted automatic lubrication feature that guards against contamination caused by dust and debris, promoting a long breaker life. Standard on many models.
Equipped for dependability

You'll be equipped to keep your breakers performing optimally with an inspection kit that can assess routine maintenance needs, standard with all models.
Less vibration

Maximize operator ergonomics with a shock-dampening box bracket on the JTHB-G models and suspensions with rubber/poly components on the JMHB-H and -V models, which absorb impact and reduce vibrations through the boom.
Adaptable and versatile

Versatility to adapt to various rock types with two working positions to provide the appropriate frequency and energy per blow.
Noise reduction

Completely enclosed sound-dampening housings reduce noise generated vs. open style breakers.
Powerful compact range

Bring plenty of force to smaller excavators with compact models that use a single power cell without heavy tie rods, improving weight-to-power ratio.
Standard features

You get valuable features built right into your investment with standard features, such as automatic greasing, advanced blank firing protection, swivel hose couplings and heavy-duty housing.

Komatsu construction

Tips for increasing hydraulic breaker life

Keeping your hydraulic breaker in optimal condition can increase performance and optimize your operation. Learn Komatsu's top tips for maintenance and use to help increase your breaker life.

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Related products

JTHB-G

JMHB-V