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| Hammer | YT24/28/29 | ||
| rated track length | 2*3m | ||
| max.drilling depth | 6m | ||
| drilling diameter | 34mm-42mm | ||
| minimum air pressure | 0.5-0.7MPa | ||
| drilling speed | 40m/h(one head) | ||
| total compressed air consumption | 20m³/min | ||
| track travel | 2m | ||
| Feed System | Pneumatic motor, chain | ||
| cross travel device | Handwheel,gear,rack | ||
| drilling direction | Any direction | ||
| number of the hammer | 4 | ||
| total weight | 1100(kg) |
Four-hammer Rock Driller