
Technical Specification
| Type | KR285C |
| Torque | 285KN.m |
| Max. diameter | 2000/2300 mm |
| Max. drilling depth | 57 m(Lock)/ 88 m(Friction kelly bar) |
| Speed of rotation | 7~23 rpm |
| Max. crowd pressure | 220 kN |
| Max. crowd pull | 220 kN |
| Main winch line pull | 320 kN |
| Main winch line speed | 80m/min |
| Auxiliary winch line pull | 110 kN |
| Auxiliary winch line speed | 75m/min |
| Stroke(crowd system) | 6000mm |
| Mast inclination(lateral) | ±5° |
| Mast inclination(forward) | 5° |
| Max. operating pressure | 34.3 MPa |
| Pilot pressure | 3.9 MPa |
| Travel speed | 1.5km/h |
| Traction force | 510 kN |
| Operating height | 23815 mm |
| Operating width | 4300mm |
| Transport height | 3550 mm |
| Transport width | 3000 mm |
| Transport length | 17725mm |
| Overall weight | 85 t |

