ZRC8A-DHD380 High Air Pressure without Footvalve DTH Hammers

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ZRC8A-DHD380 Techinical Specifications
Length w/o bitWeight w/o bitDiameterThreadRec. hole size
(mm)(Kg)(mm)
1355173180API 4 1/2 REG195-254
Work pressureImpact FrequencyAir consumptionRec. rotation speed
(Mpa)(Hz)(m³/min)(r/min)
1.0-2.522 at 1.7 Mpa12-2815-25
ZRC8A-DHD380 DTH hammer features
1.Mainly for blasting hole above 200mm, in geothermal, water well, mining and quarry etc;
2.Drill bit without footvalve, and thus avoid the trouble caused by footvalve crack, broken, thermal expansion and contraction etc.
3.Low impact power consumption, fast impact frequency, 15%-20% faster in penetration speed than same model with footvalve type;
4.Low air consumption, energy saving, saving more than 10% oil than same model with footvalve type;
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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