ZR420U rotary drilling rig, premium power configuration, suitable for high-demand foundation projects.
| Model | ZOOMLION ZR420U |
| Max.drilling diameter | 2800 mm |
| Max.drilling depth | 110/71 m |
| Max.output torque | 420 kN·m |
| Rotary speed range | 6-28 rpm |
| Crowd foece push | 340 kN |
| Crowd force pull | 380 kN |
| Max.stroke crowd | 13m |
| Rated power of engine | 373 kW |
| Emission | Stage V |
| Operation weight | 115 t |