Hydraulic Hammer GH-7A Enviro

Hydraulic Hammer GH-7A Enviro

GH-Series hydraulic hammers: more power and less noise


  • Enviro bracket which encloses the hammer in the best possible way: reduces sound and vibration.
  • Underwater operation adaptable.
  • Shock absorbing Cushion Rubbers (from GH-7A and up) absorbs vibration and protects integrity of excavator boom and arm.
  • Designed with sealed gas (N2) chamber – no rubber bladder accumulators.
  • Constant energy per blow: maintains high breakout force – not dependent upon blow rate.
  • Rapid and easy chisel replacement: reduces downtime to a minimum.
  • Replaceable tool bushings: prevent wear to main chisel holder body and enhance the life of the breaker.
  • Possibility to mount easily an automatic lubrication system from GH-7A and up.

Unique gas charged piston action. The Power of NPK®.

Shock absorbing Cushion Rubbers (from GH-7A ): low vibration and low noise.

The Enviro brackets, utilize special heavy-duty rubber mounts to absorb shock, recoil and impulse vibration.


Model GH-7A
Excavator weight (ton) 14 - 21
Weight (kg) 1220
Length with chisel (mm) 2235
Oil flow (l/min) 100-180
Blow frequency (bpm) 400-750
Min.excavator pressure (MPa) 21 ~
Chisel diameter (mm) 116


GH-7A 2CR drawing


Hydraulic_hammer.pdf (838.80 kB)

Hydraulik_hämmer.pdf (852.87 kB)

Brise_roches_hydrauliques.pdf (865.66 kB)



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