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 84 mm from the drill center line. 2M versions are equipped with two 160 cm3 OMS-series rotation motors. This enables continuous, a high torque of 1593 Nm and an intermittent torque of 1900 Nm while still maintaining high rotation speed.
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-2M is 76 mm.
|Nominal power class||17 kW|
|Percussion pressure||160 bar|
|(Percussion oil-flow)||(90-120 litres/min)|
|Rotation motors*||2*160 cm3|
|Speed max.||250 rpm|
|Torque (2*160 cm3)*||1900 Nm|
|Oil flow*||2*40 litres/min (max. 2*90 litres/min)|
|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|
AIR / WATER
*) Numbers given are for two standard rotation motor (2*160 cm³) at an intermittent pressure of 275 bar [3989psi]. Motor options are 80 cm³, 100 cm³, 125 cm³ and 160 cm³.