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 is easily adaptable from GH-4 and up.
  • 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.

Excavator weight (ton)14 - 21
Operating weight (kg)1345
Length with chisel (mm)2275
Oil flow (l/min)100-180
Min.excavator pressure (MPa)21 ~
Chisel diameter (mm)116



Hydraulic-Hammer.pdf (5.57 MB)

Hydraulik-Hammer.pdf (5.72 MB)

Brise-Roches-Hydrauliques.pdf (5.66 MB)