Leading in the manufacture of DOWN-THE-HOLE and TOP HAMMER drilling tools, ZR company produces drilling tools completed in variety. ZR brand drilling tools apply to constructions of wide range with high reliability. Drilling performance is top class in the industry. Widely used in the drilling of soft rock and hard rock, mining of iron ore, gold mine, and coal mine, construction of water well, geothermal and ground and foundation engineering, etc. ZR drilling tools have been serving drilling constructions nationwide. And widely export to Russia, Australia, South Korea and more than 20 countries worldwide.
 

DHD340 DTH HAMMER
ZR brand
P/N: ZRC4-DHD340
Length w/o bit: 1046mm
Weight w/o bit: 42kg
Diameter: 99mm
Thread: API 2 3/8 REG
Recommended hole size: 110~135mm
Work Pressure: 1.0~2.5 Mpa
Impact Frequency: 27 at 1.7 Mpa
Air consumption: 6~15m³/min
Recommended Rotation Speed: 25~40r/min    

ZRC4-DHD340 DTH hammer features,

1.For drilling hole above 110mm, in mining, quarry, water well and geothermal etc.;
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, low faliure rate; low disamble rate, long service life, low operating cost, steady in performance.