Consists of integrated down-the-hole drilling rigs,full hydraulic open-pit drill carriages,multifuctional cutting drilling rigs, ground screw drilling rigs, down hhole rock drill jumbos ect. It is widely used in construction such mining projects as cement, metallurgy, coal mines, quarries, etc., and such new energy projects as railways and highways, water conservancy and hydropower, national defense construction and housing contruction.
| Main parameters | SWDRT250 | SWDRT250H | |
| Drilling method | DTH and roller-bit drilling | Roller bit | |
| Operation parameters | |||
| Diameterof roller-bit drilled hole | mm | 230〜250 | 220〜270 |
| Diameterof DTH drilled hole | mm | 165-200 | — |
| Drillingdepth | m | 48 | 48 |
| Drilling angle (optional) | o | 60 〜90 | 60 〜90 |
| Rock hardness | f4 〜20 | f4 〜20 | |
| Type of bit | DTH and roller bits | Roller bits | |
| Drill pipe diameter | mm | 133、 159、 194 | 194、 219 |
| Drill pipe length | m | 10mX5 | 10mX5 |
| Air com pressor | |||
| Discharge pressure | bar | 25/17 | 7 |
| Air rate | m3/min | 29.8 | 36 |
| Engine power | kW | 328 | 220 (motor) |
| Diesel engine | Dieselengine + motor | ||
| Model | Cummins QSM11-C400 | Cummins QSB7-C187 | |
| Power/rate of rotation | kW/rpm | 298/2100 | 140/2050+110+90 |
| Fueltankvolume | L | 1500 | 400 |
| Propulsion | |||
| Length of drill stand | m | 15 | 15 |
| Propulsion stroke | m | 11.4 | 11.4 |
| Propulsion speed | m/min | 45 | 45 |
| Propulsion | kN | 220 | 290 |
| Axial pressure | kN | 270 | 340 |
| Liftingspeed | m/min | 63 | 63 |
| Travelingcapability | |||
| Traveling speed | km/h | 2 | 2 |
| Gradeability | o | 20 | 20 |
| Ground pressure | kPa | <100 | <100 |
| Slewing | |||
| Rate of rotation | rpm | 0 〜160 | 0—120 |
| Torque | kNm | 11 | 13.8 |
| Power | kW | 110 | 110 |
| Overall dimensions | |||
| Total weight | kg | 55000 | 80000 |
| LXWXH (when the drill stand is level) | m | 17X5.8X7 | 17 X5.8 X 7 |
| LXWXH (when the drill stand is upright) | m | 13X5.8X 17 | 15 X5. X 17 |
