Hydraulic rock drills and drifters
High-performance hydraulic rock drill
Doofor DF550L 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. It can also be equipped with stainless steel, separated flushing head for underground mining, bolting, and grouting.
Optimal maximum hole diameter for the DF550L is 76mm [3”].
|Percussion power||17 kW|
|Percussion pressure||160 bar|
|(oil flow)||(90-120 litres/min)|
|Rotation motor*||125 cm3|
|Speed max.||250 rpm|
|Oil flow max.*||51 litres/min|
|Lubrication||Air-oil mist, min. 75 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 (125cm³) at an intermittent pressure of 275bar [3989psi]. Motor options are 80cm³, 100cm³, 125cm³, 160cm³ (right hand side installation).