| Technical specification of KR220C rotary drilling rig | |||
| Torque | 220 kN.m | ||
| Max. diameter | 1800/2000mm | ||
| Max. drilling depth | 64/51 | ||
| Speed of rotation | 5~26 rpm | ||
| Max. crowd pressure | 210 kN | ||
| Max. crowd pull | 220 kN | ||
| Main winch line pull | 230 kN | ||
| Main winch line speed | 60 m/min | ||
| Auxiliary winch line pull | 90 kN | ||
| Auxiliary winch line speed | 60 m/min | ||
| Stroke(crowd system) | 5000 mm | ||
| Mast inclination(lateral) | ±5° | ||
| Mast inclination(forward) | 5° | ||
| Max. operating pressure | 35MPa | ||
| Pilot pressure | 4 MPa | ||
| Travel speed | 2.0 km/h | ||
| Traction force | 420 kN | ||
| Operating height | 21082 mm | ||
| Operating width | 4300 mm | ||
| Transport height | 3360 mm | ||
| Transport width | 3000 mm | ||
| Transport length | 15300 mm | ||
| Overall weight | 65t | ||
| Engine | |||
| Model | CAT-C7.1 | ||
| Cylinder number*diameter*stroke(mm) | 6*112*140 | ||
| Displacement(L) | 7.2 | ||
| Rated power(kW/rpm) | 195/2000 | ||
| Output standard | European III | ||
| Kelly bar | |||
| Type | Interlocking | Friction | |
| Diameter*Section*length | 440mm*4*14000mm(standard) | 440mm*5*14000mm(optional) | |
| Depth | 51m | 64m | |