DFR8-GRT-2M
The Doofor DFR8-GRT-2M is a two-motor, high-performance rock drill with a flushing head that can be used for grouting. The two rotation motors are on the sides of the rock drill.. The DFR8-GRT-2M has hydraulic cushioning and extractor as standard features. The extractor allows easy detaching of drill rods and the dampening system improves the drilling capability of the rock drill. The flushing system is separated from the gear box, which helps to protect the gears during demanding drilling and grouting
operations.
The DFR8-series 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.
The Doofor DFR8-GRT-2M utilizes T45 and T51 shank adapters. The product is protected by various patents and/or applications.
127 MM
OPTIMAL MAXIMUM HOLE DIAMETER
25 KW
POWER CLASS
T45 and T51
SHANK SIZE
AIR/WATER/MIST
FLUSHING
| Nominal power class | 25 kW |
| Percussion pressure continuous | 130–150 bar |
| (Percussion oil-flow at 170 bar) | (130–148 l/min) |
| Rotation motors (cm3), two pcs | 200, 250, 315, 400. |
| Rotation speed max. | 100–200 RPM |
| Rotation torque* | 2658–3654 Nm |
| Rotation oil flow* | 2 * 90 l/min |
| Lubrication oil volume* | 400–500 g/h |
| Flushing air pressure. | 7–10 bar |
| Flushing air flow | 6000–15 000 l/min |
| Flushing water flow | 100–300 l/min |
| Weight | 280 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.
