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Changsha Heijingang Industrial Co., Ltd.

Dth Hammer, Rock Drilling, Down The Hole Hammer manufacturer / supplier in China, offering HD55 DTH Hammer (Cop54, DHD350R), RC5.5 A67 143 Drilling Bit, Hjg HD45A DTH Hammer Best Quality and so on.

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HD55 DTH Hammer (Cop54, DHD350R)

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Min. Order: 1 Piece
Payment Terms: L/C, T/T

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Basic Info
  • Model NO.: Cop54, DHD350R
  • Mining Object: Mining
  • Origin: China
  • Type: Drilling Machine
  • Trademark: HJG
  • 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 Diameter Bit Shank Hole Range Connection Thread
1214 mm 76.50 kg  Φ125 mm   Cop54 DHD350R Φ135mm _ Φ155mm  API 2 3/8'' Reg
API 3 1/2'' Reg
Working Pressure Impact rate at 0.5 MPa Recommended Rotary Speed Air Consumption
1.0 MPa 1.8 MPa  2.4 MPa
1.0 - 2.5 MPa 25 Hz 20-35 rpm 9 m³/min  15 m³/min 23 m³/min 
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Mr. Larry Wu
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