Hydraulic Drifters


Progressive Blow Energy

The unique design of our piston generates a perfect, long shock wave in a trapezoidal shape:

  • better transmission of energy at the couplings
  • minimum stress into the drilling rods
  • better bit penetration

Hydraulic Dampening System

The action of the dampening piston, not only absorbs the lost part of reflected energy but ensure a constant, thrust onto the tools:

  • better efficiency
  • no internal peak of pressure source of cavitation
  • ideal drifter protection

Energy Recovery Valve

This valve allows for the piston's rebound energy to be utilized for the next blow, giving a definite advantage over the HC series drifters:

  • optimum shockwave transmission
  • drifter protection and reduced tool vibration

Hydraulic Reverse Percussion

The optional hydraulic reverse percussion system insures a real back hammering:

  • tool extraction in fractured ground
  • no rods left in the hole