Designed to endure
demanding environments

Hydraulic rock drills and drifters

DF430X – DF430S – DF430F – DF500X – DF500S – DF530X – DF530SDF538L – DF540L – DF540L-BLT – DF550L – DF550L-2M – DF550L-EXT – DF560L - DF560L-2M – DF560L-EXT


High-performance hydraulic rock drill

Doofor DF500S is a high-frequency hydraulic rock drill for bolting, general excavations, and tunneling. Suitable drill steels are 28mm [1 ¹/8"] and 32mm [1 ¼"] extension- and drifter steels. The rock drill is equipped with a separate side flushing box. Flushing can be done with water or with air.

Optimal maximum hole diameter for the DF500S is 45mm [1 ¾"].

The rock drill is equipped with R28 or R32 male shank adapter (striker bar).

Doofor 500S hydraulic rock drill
 Technical Data
 Percussion power  10 kW
 Percussion pressure  100-130 bar
 (oil flow)  (55-80 litres/min)
 Rotation motor*  32 cm3
 Speed max.  205 rpm
 Torque*  175 Nm
 Oil flow max.*  25 litres/min
 Gear ratio  52/17
 Lubrication  Air-oil mist, min. 125 g/h
 Flushing air pressure  12 bar max.
 Flushing air flow  700-1200 litres/min
 Flushing water flow  25–30 litres/min
 Weight  77 kg

Feed force (pressure) must be adjustable during operation
*) Numbers given are for standard rotation motor (32cm³) at an intermittent pressure of 140bar [2031psi]. Motor options are 12.5cm³, 20 cm³, 32cm³, 40cm³ and 50cm³.


45 mm
Optimal maximum
hole diameter
10 kW
Power class
Shank size

Doofor DF500S in action

Doofor DF500S hydraulic rock drill in action

Doofor DF500S hydraulic rock drill in action


DF500S drilling upwards