Product description

  • The power to drill large holes 
  • High quality penetration results with any type of down the hole DTH hammer 
  • Enables the DTH hammer to exert greater power, which significantly accelerates the drilling rate 
  • Prolonged drill pipe life
Technical data

Hole diameter

92 mm - 203 mm

Max. rotation

68 - 107 rpm


For underground applications

Input system



DHR 6HU rotation unit