Hydraulic rock drill DF540L-EXT-2M
Hole diameter [mm]
Power class [kW]
Doofor DF540L-EXT-2M is a hydraulic rock drill in the 14kW size class and it has a hydraulic extractor function and two OMS-type rotation motors. Motor displacement can vary between 80 cm³ to 160 cm³. Two rotation motors offer a consistent torque and yet a high rotation speed necessary for successful high-frequency rock drilling. It is designed for general excavations, underground production drilling and bolting.
The DF540L-EXT-2M has a low overhead, which makes it a good underground and limited access drifter and a patented percussion valve for optimal flow-power ratio.
Flushing media can be water or air. The rock drill can be equipped with male R32, R38 and T38 shank adapters (striker bars).
- Nominal power class 14 kW
- Percussion pressure 140 bar
- Percussion oil-flow (90 litres/min)
- Rotation motors 2*125 cm3
- Speed max. 250 rpm
- Torque* 1592 Nm
- Oil flow* 2*40 litres/min (max. 2*90 litres/min)
- Gear ratio 65/40
- Lubrication Air-oil mist, min. 200 g/h
- Flushing air pressure 5–7 bar
- Flushing air flow 4000 litres/min
- Flushing water flow 150 litres/min
- Weight 162 kg
*) Numbers given are for two standard rotation motors (2*125 cm³) at an intermittent pressure of 275 bar [3989psi]. Motor options are 80 cm³, 100 cm³, 125 cm³, 160 cm³, 200 cm³, 250 cm³. For professional use only as a component of a hydraulic system.
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