Doofor DF550L-BLT-2M is a hydraulic rock drill equipped with two rotation motors and multiple sealing and hermetic rotation mechanism for demanding underground conditions. Two rotation motors enable continuous, high torque while maintaining high rotation speed. 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).
Doofor DF550L-BLT-2M is a high-frequency hydraulic rock drill specially designed for ground stablilization and general excavations. The drifter has a very low overhead, only 84mm from the drill center line.
The rock drill has a separated, non-corrosive flushing box. Flushing media can be water, air or grout (limitations apply). The rock drill can be equipped with shank adapters (striker bars) R32, R38, T38, and T45.
Optimal maximum hole diameter for the DF550L is 76mm.
|Percussion power||17 kW|
|Percussion pressure||160 bar|
|(oil flow)||(95-120 litres/min)|
|Rotation motors*||80-200 cm3|
|Speed max.||250 rpm|
|Torque (2*125 cm3)||1592 Nm|
|Oil flow max.*||95–120 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|
Feed force (pressure) must be adjustable during operation
*) Numbers given are for standard rotation motor (200cm3) at an intermittent pressure of 275bar [3989psi]. Motor options are 80cm³, 100cm³, 125cm³, 160cm³, 200cm³, 250cm³. For professional use only as a component of a hydraulic system.