Technical Specification
| Type | KR220C |
| Torque | 220 KN.m |
| Max. diameter | 1800/2000 mm |
| Max. drilling depth | 51 m(Lock)/ 64 m(Friction kelly bar) |
| 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 | 60m/min |
| Auxiliary winch line pull | 90 kN |
| Auxiliary winch line speed | 60 m/min |
| Stroke(crowd system) | 5000mm |
| Mast inclination(lateral) | ±5° |
| Mast inclination(forward) | 5° |
| Max. operating pressure | 35 MPa |
| Pilot pressure | 4 MPa |
| Travel speed | 2km/h |
| Traction force | 420 kN |
| Operating height | 21236 mm |
| Operating width | 4300mm |
| Transport height | 3323 mm |
| Transport width | 3000 mm |
| Transport length | 15260mm |
| Overall weight | 64 t |
