| Technical specifications of YT29A pneumatic leg rock drill |
| Machine weight | 26.5 | KG |
| External dimensions (length x width x height) | 659 × 248× 205 | MM |
| Cylinder diameter | 82 | MM |
| Piston structure stroke | 60 | MM |
| Working air pressure | 0.40-0.63 | Mpa |
| Impact energy | ≥78(0.63Mpa)≥69(0.5Mpa)≥50(0.4Mpa) | Joule |
| Gas consumption during rock drilling | ≤88(0.63Mpa)≤65(0.5Mpa)≤52(0.4Mpa) | L/S |
| Rock drilling impact frequency | ≥39(0.63Mpa)≥37(0.5Mpa)≥36(0.4Mpa) | Hz |
| Torque | ≥20(0.63Mpa)≥16(0.5Mpa)≥14(0.4Mpa | N• M |
| Using water pressure | 0.3 | Mpa |
| Tracheal inner diameter | 25 | MM |
| Inner diameter of water pipe | 13 | MM |
| Suitable drilling diameter | 34-45 | MM |
| Suitable maximum drilling depth | 5 | M |
| Working temperature | -75 | ℃ |
| Shank size | H22× 108±1 | MM |