pneumatic air digging tools
| Technological Parameter | Model |
| D3 | D4 | D6 | D9 |
| Impacting Frequency | 16HZ | 15HZ | 14HZ | 10HZ |
| Number of Impacting | 900/min | 800/min | 700/min | 600/min |
| Piston of Diameter | 20mm | 22mm | 25mm | 32mm |
| Rated pressure | 0.63Mpa | 0.63Mpa | 0.63Mpa | 0.63Mpa |
| Air Consumption | 9.5L/s max | 10L/s max | 13L/s max | 15L/s max |
| Inside Diameter of Sunction Tube | 10mm | 13mm | 13mm | 13mm |
| Total Weight | 3.5kg | 5kg | 7kg | 9.5kg |
| Total Length | 430mm | 550mm | 1000mm | 1140mm |
| Forced Strohe of Piston | 90mm | 90mm | 100mm | 120mm |
| Noise(Power Level) | 105dB(A)max | 109dB(A)max | 109dB(A)max | 110dB(A)max
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