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D55A Down The Hole Hammer COP 54 , DHD 350R For High Roads Hole Drilling

D55A Down The Hole Hammer COP 54 , DHD 350R For High Roads Hole Drilling
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Model: Donw The Hole Hammer
Name: Secoroc COP Hammer
Drills: Down The Hole Drilling, DTH Drilling
Machine: Hydraulic Crawler Drill Rig
Drillings: Water Well Drilling
Tools: Down The Hole Drilling Tools
Equipment: Surface Ground Core Drill Rig
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dth drilling tools


down hole hammer

Basic Infomation
Place of Origin: GERMANY CHINA
Brand Name: ROSCHEN
Certification: ISO,CE
Model Number: ROS54
Payment & Shipping Terms
Packaging Details: Wooden Box
Supply Ability: 5000pcs
Product Description

D55A DTH Hammer (Cop54, DHD350R)

COP 54, DHD 350R Down The Hole Hammer

D55A DTH Hammer COP 54, DHD 350R Down The Hole Hammer Used For High Roads Hole Drilling


Basic Info
Model NO Cop54, DHD350R
Mining Object Mining
Origin Germany, China
Type Drilling Machine
Trademark ROSCHEN
HS Code 84123100
Mining Object Mining, Ore Machinery, Stone Quarry
Usage Use Together with DTH Button Bits
Aplication DTH Drilling. Coal Mining, Quarry
Drill Diameter 65-305mm
Transport Package Ply wood Box


DTH Hammer

The Down The Hole Hammer is an integral part of the submersible drilling rig and belongs to the working device of the downhole drilling rig. DTH Hammer are divided into low-pressure submersible impacters, stroke pressure dive impacters and high pressure dive impacters.


Widely used in metallurgy, coal, chemical, building materials are not busy mines and water conservancy, hydropower, roads, railways, defense, construction and other projects into the hole, suitable for dry and wet operation hole water wind and water mixture, and borehole gushing wet operation, reliable performance, is now the ideal drilling hole equipment.



Product Description: 

It is a kind of high air pressure DTH Hammer without footvalve, our newest design. It is also one of the most advanced DTH Hammers in the world.



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.

Technical Parameters of DHD350 R Hammers: 


Length (exclude bit) Weight (exclude bit) External Diameter Bit Shank Hole Range Connection Thread
1110 mm 69.00 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 28 Hz 20 ~ 35 rpm   7 m³/min 14 m³/min 19 m³/min





For more information please contact:





WeChat: +86-137 6419 5009 ; +86-135 8585 5390

WhatsApp: +86-137 6419 5009 ; +86-135 8585 5390

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Contact Person : Bill, George, Michael
Tel : 13764195009
Fax : 86-021-54380177
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