DFR8
The Doofor DFR8 is a new generation high-power, high-frequency rock drill specially designed for underground production drilling and general excavations. The rock drill has hydraulic cushioning and drill rod extractor as standard features. The extractor allows easy detaching of drill rods and the dampening system improves the drilling capability of the rock drill.
DFR8 is based on a modular structure that brings added benefits for field use. By grouping multiple core functions within a single unit, the number of pressurized flange joints is minimized, thereby reducing the risk of oil leaks and simplifying maintenance, including the change of flushing seals and shank adapter.
Doofor DFR8 is utilizing air oil mist lubrication, while additional grease nipples are an option.
Two piston versions are available, 22 kW and 25 kW.
127 MM
OPTIMAL MAXIMUM HOLE DIAMETER
22–25 KW
POWER CLASS
T38, T45 and T51
SHANK SIZE
AIR/WATER/MIST
FLUSHING
| Nominal power class | 22–25 kW |
| Percussion pressure | 130–170 bar |
| (Percussion oil-flow at 175 bar) | (136–148 l/min) |
| Rotation motors (cm3) | 200, 250, 315, 400. |
| Rotation speed max. | 102–203 RPM |
| Rotation torque* | 1329–1827 Nm |
| Rotation oil flow* | 90 l/min |
| Lubrication oil volume* | 300–500 g/h |
| Flushing air pressure. | 7–10 bar |
| Flushing air flow | 6000–15 000 l/min |
| Flushing water flow | 100–300 l/min |
| Weight | 260 kg |
*) Numbers given are for available motors. See techical specifiactions for more detailed values. Numbers given are examples for typical jobs and installations. Please refer to catalogue and technical specifications for detailed information on the Doofor products.
