Designed to endure
demanding environments


Doofor DF540L-BLT hydraulic rock drill
High-performance hydraulic rock drill

Doofor DF540L-BLT is a hydraulic rock drill designed for bolting, general excavations, and underground production drilling. The DF540L-BLT has a very low overhead, only 82.5 mm from the drill center line. The rotation motor of the DF540L-BLT can be installed on the right-hand or the left-hand side. The drifter is completely horizontally symmetric so that it can be installed in a variety of positions.

Flushing media can be water or air. The DF540L-BLT is an excellent bolting hammer with its low physical length and rugged, powerful rotation mechanism. BLT-version is equipped with multiple sealing and hermetic rotation mechanism for demanding underground conditions.

The rock drill can be equipped with male R32, R38, T38 and female FR28, and FR32 shank adapters.

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 is 64 mm [2 ½”].

Technical Data
Nominal power class14 kW
Percussion pressure140 bar
(Percussion oil-flow)(90 litres/min)
Rotation motor*80 cm3
Speed max.250 rpm
Torque*504 Nm
Oil flow*40 litres/min (max. 80 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
Weight138 kg

64 mm

Optimal maximum
hole diameter

14 kW

Power class

R32, R38, T38
FR28, FR32

Shank size



*) Numbers given are for standard rotation motor (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.

©2019 Doofor Inc