Designed to endure
demanding environments


Doofor hydraulic drifter DF540L-BLT-2M
High-performance hydraulic rock drill

Doofor DF540L-BLT-2M is a hydraulic drifter in the 14kW size class with two OMS-type rotation motors and a BLT-flushing head. The rock drill is designed for bolting, general excavations, and ground stabilization. The DF540L-BLT-2M has very low overhead and two rotation motors. Two rotation motors offer a stable, high torque while offering a high rotation speed necessary for patented high-frequency percussion.

Flushing media can be water or air or even grout (limitations apply). BLT-versions are protected with multiple sealing and hermetic rotation mechanism for demanding underground conditions.
Available shank adapters are R32, T35, R38, T38, and T45.
This rock drill can be equipped with stainless steel, separated flushing head for underground mining, bolting, and grouting.
Optimal maximum hole diameter for the DF540L-BLT-2M is 64 mm.

Technical Data
Nominal power class14 kW
Percussion pressure140 bar
(Percussion oil-flow)(90 litres/min)
Rotation motors2*125 cm3
Speed max.250 rpm
Torque (2*125 cm3) *1592 Nm
Oil flow*2*40 litres/min (max.  2*90 litres/min)
Gear ratio65/40
LubricationAir-oil mist, min. 200 g/h
Flushing air pressure5–7 bar
Flushing air flow4000 litres/min
Flushing water flow150 litres/min
Weight165 kg

64 mm

Optimal maximum
hole diameter

14 kW

Power class

R32, R38, T38, T45

Shank size



*) Numbers given are for standard rotation motors (2*80 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.

Feed force (pressure) must be adjustable during operation. Rotation torque and oil flow values given are for a typical rotation motor. See full brochure for detailed information on different rotation motors. Percussion pressure mentioned is a recommended value for a typical application. The product is intended for professional use by skilled personnel. Doofor reserves all rights for changes without prior notice.

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