Gold Member Since 2013
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Changsha Heijingang Industrial Co., Ltd.

DTH Hammer, Rock Drilling, Down The Hole Hammer manufacturer / supplier in China, offering HD45 DTH Hammer (Cop44, DHD340) 4 Inch Drilling Hammer, Hotsales High Air Pressure DTH Hammer Without Footvalve Ql 60, Blast Hole Drill Rig and so on.

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Supplier Homepage Product High Air Pressure with Foot Falve DTH Hammers HD45 DTH Hammer (Cop44, DHD340) 4 Inch Drilling Hammer

HD45 DTH Hammer (Cop44, DHD340) 4 Inch Drilling Hammer

FOB Price: Get Latest Price
Min. Order: 1 Piece
Production Capacity: 50000 PC/Year
Transport Package: Poly Wood
Payment Terms: L/C, T/T, cash

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Basic Info
  • Model NO.: Cop44, DHD340 HJG drill
  • Power Type: Pneumatic
  • Condition: New
  • Trademark: HJG
  • Origin: China
  • Usage: Ore
  • Type: Drilling Machine
  • Mining Object: Mining
  • Specification: SGS ISO
  • HS Code: 84123100
Product Description
It is a kind of valveless high air pressure DTH Hammer with foot valve.

It has the following advantages:
1. Valveless air distribution. More reliable.
2. Simple design of the piston, long life.
3. More efficient energy transfer, faster 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.
Length(exclude bit)Weight(exclude bit)External DiameterBit ShankHole RangeConnection Thread
1030mm39.00 kg Φ99 mm  Cop44, DHD340Φ110mm _ Φ135mm API 2 3/8'' Reg
Working PressureImpact rate at 0.5 MPaRecommended Rotary SpeedAir Consumption
1.0 MPa1.8 MPa 2.4 MPa
1.0 - 2.5 MPa27 Hz25-40 rpm6 m³/min 10 m³/min15 m³/min 

HD45 DTH Hammer (Cop44, DHD340) 4 Inch Drilling Hammer
HD45 DTH Hammer (Cop44, DHD340) 4 Inch Drilling Hammer
HD45 DTH Hammer (Cop44, DHD340) 4 Inch Drilling Hammer
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Mr. Larry Wu
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