4 Inch Hard Rock Hammer Bits DHD340A 115mm DTH Drill Bits For Mining

Our Products:

With professional manufacturing experience in DTH hammer production, our factory can supply you with high
pressure and medium to low pressure DTH hammers. It strictly matches with API standard and other Chinese industry standards.It is durable for being produced with advanced craftwork and good material.

Products Description

The Characteristics of High Air Pressure DTH Hammer with foot Valve.

1. Valveless air distribution.More Reliable
2. Simple design of the piston,long life
3. More efficient energy transfer,fasting drilling speed,lower air consumption and lower oil consumption
4. Fewer internal parts,simple structure,longer life,less failure and easier to maintain because all the parts are heat treated
5. Easy to disassemble because the top sub,the drive chuck and the external cylinder are connected by multi-step thread

The Characteristics of High Air Pressure DTH Hammer without foot Valve.

1. Out of the trouble of foot valve fracture and expansion and contraction
2. Lower energy consumption and higher impact frequency.The drilling speed is 15%-30% higher than the one with foot valve
3. Simple Structure,reliable parts,long life,easy and cheap maintenance
4. Lower air and oil consumption.The oil consumption is about 10% lower than the one with foot valve

DTH hammer and bit introduction:

Other shank can be available:

3.5" hammer, shank: DHD3.5 / Bulroc BR3 / COP32 / QL30 / M30 /Mach303

4" hammer, IR DHD340A / SD4 / COP44 / QL40 / Bulroc BR4 / M40 / Mach44 shank

5" hammer, IR DHD350R / SD5 / COP54 / Bulroc BR5 / QL50 / M50 /Mach50 shank

6" hammer, IR DHD360 / SD6 / COP64 / Bulroc BR6 / QL60 / M60 shank

8" hammer, IR DHD380 / SD8 / COP84 /QL80 shank

10" hammer, SD10 / Numa100 shank

12" hammer, IR DHD1120 / SD12 / Numa120 / Numa125 shank

15" hammer, SD15 shank

We can also provide related products DTH button bits, ODEX, symmetric overburden systems, slide block drilling systems, etc and DTH drilling pipes for various thread API REG, API IF, BECO, etc

Products photos:

Advantages:

1. Deliver maximum energy to drilling bit, fast drilling speed and low air consumption due to the special inner structure of HD series DTH hammer designed according to newest rock drilling theory.

2. Smooth performance and long service life of HD series DTH hammer due to high quality alloy steel materials and advanced processing technology adapted.

3. Low problem rate and easy to maintenance due to simple, reliable and easy assemble and disassemble inner structure of hammer.

4. Easy to depart bit from hammer due to multi-head thread connecting chuck and cylinder of hammer.

5. Interchangeable with DTH bit and drill pipe

Quality warranty:

Our hammers are made of high quality steel and all spares are inspected strictly before shipping. We have quickly responses for your complaint and suggestion.

Package:
Using ply-wooden cases and pallet for exporting to protect products and avoid the damagement during transportation. Also we can customize package according to your special requests.

Transportation:
By air, By Express or By sea according to your requests