SD20A Hydraulic Rotary Drilling Rig, its main
performance reaches advanced level of its same
kind in the world. Its key parts use world famous
products. It can be flexibly operated and has high
efficiency, widely used in the construction of tall
building, bridge and water conservancy.
| Type | SD20A |
| Drilling tower | |
| Height of tower (mm) | 21500 |
| Weight of base machine(without drilling tools)(kg) | 55000 |
| Crowd cylinder | |
| Cylinder stroke (mm) | 5700 |
| Cylinder pressure force (kN) | 200 |
| Cylinder pulling force (kN) | 200 |
| Main winch | |
| Single line pull (kN) | 1800 |
| Rope diameter (mm) | 26 |
| Line speed max. (m/min) | 60 |
| Auxiliary winch | |
| Single line pull (kN) | 75 |
| Rope diameter (mm) | 18 |
| Line speed max. (m/min) | 45 |
| Drilling parameter | |
| Dimensions(mm) | |
| L1 | 20500 |
| L2 | 8450 |
| L3 | 2850 |
| Drilling diameter(mm) | |
| uncased | 1800 |
| cased | 1500 |
| Length of case(m) | |
| W/O oscillator | H-0.6 |
| With oscillator | H-1.8 |
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