| ZRC3.5A-DHD3.5 Techinical Specifications | ||||
| Length w/o bit | Weight w/o bit | Diameter | Thread | Rec. hole size |
| (mm) | (Kg) | (mm) | ||
| 865 | 20 | 80 | API 2 3/8 REG | 90-110 |
| Work pressure | Impact Frequency | Air consumption | Rec. rotation speed | |
| (Mpa) | (Hz) | (m³/min) | (r/min) | |
| 1.0-2.5 | 25 at 1.7 Mpa | 5-9 | 25-40 | |
| ZRC3.5A-DHD3.5 DTH hammer features | ||||
| 1．Mainly for blasting hole above 90mm, in mining and quarry; | ||||
| 2．Adpot newest rock drilling theory, better transmission of energy, bigger power for each impact; | ||||
| 3．Simple parts, more wear-resistence; | ||||
| 4．Low air consumption, energy saving, fast penetration speed; | ||||
| 5．Simple structure, easy maintance; highly matched parts, more realiable, low faliure rate; low disamble rate, long service life, low operating cost, very steady in performance. | ||||
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