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DHD series hammer(High pressure) DHD360

Brand Name: D miningwell
Minimum Order Quantity: 1 set
Packaging Details: Plastic/Wooden Case
Delivery Time: 7-10 days
Payment Terms: L/C, T/T, Western Union
Usage: Quarry, Mining, Water well drilling, Foundation piling, Tunneling ...

DTH Air Hammer gives you more power down the hole, making your investment produce more in less time. 
The D Miningwell DHD high pressure DTH hammer is used in many different applications which include but are not limited to heavy construction, mining, oil and gas, quarries, and water-well.
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Product Introduction
DTH Air Hammer gives you more power down the hole, making your investment produce more in less time. 
The D Miningwell DHD high pressure DTH hammer is used in many different applications which include but are not limited to heavy construction, mining, oil and gas, quarries, and water-well.
This high air pressure DTH hammer work without footvalve is designed and developed by our own, which is the one of the most advanced DTH hammer in the world.
It has following advantages
1.Avoid the problem happens on foot valve. Fracture,expansion and contraction.
2.Lower air comsumption and higher impact frequency. 15-30% higher drilling efficiency than the bit with foot valve.
3.Simpler structure and less spare parts, makes easier & cheaper maintenance.
4.Heat-hardened spare parts,makes longer serving life and less problem.
5.Thread connection for top sub and drive chuck,makes easier disassembly.
Technical data
Model DHD340 DHD350 DHD360 DHD380
Length(Lessbit) 1032 mm 1209 mm 1063 mm 1492 mm
Weight (Lessbit) 43kg 78.5kg 100.5kg 190 kg
External diameter 99mm 125mm 142mm 180mm
Hole Range φ110-135 mm φ135-155 mm φ150-190 mm φ195-254 mm
Connection Thread API2 3/8"REG API2 3/8"REG API3 1/2"REG API4 1/2"REG
WorkingPressure 1.0-2.2MPa 1.0-2.5MPa 1.0-2.5MPa 1.5-3.3MPa
Recommended rotation speed 30-60 r/min 30-60 r/min 30-60 r/min 30-60 r/min
Air consumption 5.5m³/min (1.0MPa) 9m³/min (1.0MPa) 20m³/min (1.0MPa) 26m³/min (1.8MPa)
10m³/min (1.8MPa) 15m³/min (1.8MPa) 28m³/min (1.8MPa) 34m³/min (2.4MPa)
         
Parts Weight (kg)
Top sub 8.8 14.7 20.3 42
"O" Ring 0.01 0.02 0.02 0.02
Check Valve 0.46 1 0.8 1.3
Spring 0.04 0.06 0.05 0.09
Rubber Buffer 0.2 0.06 0.3 0.4
Valve Seat 2.1 4.2 5 13
Inner Cylinder 2.45 4.9 4 9.1
Piston 9 15.5 23.5 41.5
Piston Case 159 30.3 37.2 62.5
Retainer Ring 0.2 0.3 0.6 1.2
Drive Chuckk 3.7 7.1 6 18.2
Adjuster Ring / 0.1 / 0.2
Ring Lock / 0.2 / /
adjuster Shim / / / 0.2
Guided Sleeve / / 2.5 /
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