Metalport, s.r.o.

is Slovak, engineering, manufacturing and trading company established in 1999, whose main production program is the development, design, manufacture, sale and service of attachments construction, earthmoving and agricultural machinery.

Hydraulic Hammer

Quality Materials + Quality Control = Quality Guaranteed Products

GB uses only the higest materials which are machined by our experienced technicians utilizing state-of-the-art manufacturing technology and production machinery.

* weight is without adapter plate

Moil point (pyramid point)

  • Fine/medium concrete demolition, non-stratiified rock
  • Secondary mining of soft/medium blocks


  • All types of digging or narrow trenching of soft/medium stratified rock

GB´s stringent quality control procedures ensure superior quality hydraulic hammers.

  • Precision machining
  • Strict monitoring of temperatures and time intervals for multi-phase heat treatment processes
  • Precision welding of hammer holders, hammer brackets and adapters
  • Stringent, continuous quality control checks and comprehensive final testing of all GB hydraulic hammers prior to delivery


Extended piston stroke
  • Smother operation
  • Minimal repercussion on carrier
Lubrication adequate for entire shift
  • Reduced wear and tear
  • Consistent availability due to extended maintenance intervals
Improved properties (Piston)
  • Improved emergency running properties
  • Manufactured with high-quality nickel & vanadium alloy steel
GB tool
  • Exceptional performance and reliability
  • Manufactured with high-quality alloy steel
Cylinder & Valve
  • Prevents scoring with precision finishing treatment
Tie rod
  • Dynamic screw design prevents damage
Back Head
  • Start-up safety
  • Power accumulator
  • Reduces irregular pulse pressure on hydraulic circuit
  • Improved striking power with supply of accumulated gas pressure