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Doofor DF538 hydraulic rock drill


Doofor DF528 is a high frequency hydraulic rock drill for bolting, general excavations and tunnelling. Suitable drill steels are 32mm (1 ¼”) extension- and drifter steels. The rock drill is equipped with a separate side flushing box. Flushing can be done with air or with water.

• Doofor DF538 LONGHOLE is a rock drill suitable for long hole drilling. It has two rotation motors.
• Doofor DF538 –rock drill standard version has one rotation motor.

Doofor DF538 is suitable for drilling 51mm (maximum 57mm) holes.
The rock drill is equipped with a R32 –shank adapter (strike bar).

 long hole rock drill with high torque  
  DF538-LONGHOLE DF538
percussion power class kW 16 16
percussion oil flow l/min 100-120 100-120
percussion pressure bar 140-150 140-150
rotation speed RPM 120-200 120-200
rotation torque* Nm 430 215
rotation oil flow* l/min 30-50 15-25
shank lubrication air l/min 200-300 200-300
flushing air pressure bar 5-7 5-7
flushing air volume l/min 1000-2000 1000-2000
flushing water l/min 25-30 25-30
weight kg 80 77

DOWNLOAD TECHNICAL SPECIFICATION [PDF-file]

*) Numbers given are for a standard rotation motor (40cm³) at a peak pressure of 140bar. Motor options are 12,5cm³, 20 cm³, 32cm³, 40cm³ and 50cm³. Doofor DF538-LONGHOLE has two rotation motors of customer choise.

PROTECTED BY VARIOUS PATENTS AND APPLICATIONS. MADE IN FINLAND.
MANUFACTURER RESERVES ALL RIGHTS FOR CHANGES WITHOUT PRIOR NOTICE. © DOOFOR OY 2006.

Doofor DF538 drifters are used by Geosonda in a hydroelectric plant water tunnel in Bosnia Hertzegovina.