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 DF550L-2M is a high-frequency hydraulic rock drill specially designed for underground production drilling and tunneling. The DF550L-2M has a very low overhead, only 84mm from the drill center line. 2M versions are equipped with two 160cm3 OMS-series rotation motors. This enables continuous, high torque (1593Nm).

The rock drill has a separated flushing box. Flushing media can be water or air.

The rock drill can be equipped with shank adapters (striker bars) R32, R38, T38, and T45. It can be equipped with stainless steel, separated flushing head for underground mining, bolting, and grouting.

Optimal maximum hole diameter for the DF550L is 76mm [3”].

Doofor DF550L-2M hydraulic rock drill
 Technical Data
 Percussion power  17 kW
 Percussion pressure  160 bar
 (oil flow)  (90-120 litres/min)
 Rotation motor*  Two 160cm3 OMS-series rotation motors
 Speed max.  250 rpm
 Torque*  Continuous torque 1593Nm
 Oil flow max.*  51 litres/min
 Gear ratio  65/40
 Lubrication  Air-oil mist, min. 250 g/h
 Flushing air pressure  5–7 bar
 Flushing air flow  4000 litres/min
 Flushing water flow  150 litres/min
 Weight  152 kg



76 mm
Optimal maximum
hole diameter
17 kW
Power class
Shank size