Doofor DF550L-BLT is a rock drill equipped with multiple sealing and hermetic rotation mechanism for demanding underground conditions. The stainless steel BLT-flushing head can be turned upside down. Rotation motor can be placed on the left or right. Motor fitting direction can be specified (up, down or side).
DF550L-BLT is a high-frequency hydraulic rock drill specially designed for underground production drilling and tunneling. The DF550L has a very low overhead, only 84mm from the drill center line. The rotation motor of the DF550L can be installed on the right-hand or the left-hand side.
The rock drill has a separated flushing box. Flushing media can be water or air. It can be equipped with shank adapters (striker bars) R32, R38, T38, and T45.
Optimal maximum hole diameter for the DF550L is 76mm.
OPTIMAL MAXIMUM HOLE DIAMETER
R32, R38, T38, T45
|Nominal power class||17 kW|
|Percussion pressure||160 bar|
|(Percussion oil-flow)||(95-120 litres/min)|
|Rotation motor*||125 cm3|
|Speed max.||250 rpm|
|Oil flow*||40 litres/min (max 90 litres/min)|
|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|
*) Motor options are 80 cm³, 100 cm³, 125 cm³, 160 cm³ and 200 cm³ (left-hand side only). Number given is for standard rotation motor (125 cm³) at an intermittent pressure of 275 bar [3989psi].
**) Number given is for standard rotation motor (125 cm³) at an operating pressure of 175 bar [2466psi].
The product is 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.