The impact frequency of reverse circulation rig is 40 times/min, the main and the auxiliary hoisting capacity is 30kN, the motor power is 45kW, not include 6BS pump. The weight of the shot bit is 4T, and it equipped with overall cast-iron,has impact resistance, stronger impact force, high drilling efficiency, used for drilling hole diameter 800-1500mm.
| Model | HF-200 | |
| Drill hole depth (m) | ≤220 | |
| The hole diameter (mm) | 450-2000 | |
| Spindle speed (r/min) | 9 | |
| Spindle power (kw) | 11 | |
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