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CIR90 DTH Hammer Lower Air Pressure Down The Hole Hammers For Contruction Drilling

1 set
CIR90 DTH Hammer Lower Air Pressure Down The Hole Hammers For Contruction Drilling
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Model: CIR90 CIR100 Down The Hole Hammer
Name: Down The Hole Hammer, DTH Hammer
Applications: Mineral Drilling, Exploration Core Drilling
Mining Object: Mining, Ore Machinery, Stone Quarry Drilling
Usage: Use Together With DTH Button Bits
Model No.: DHD360, QL60, SD80, COP64, COP84
Series No.: SD, ROS, Cop Br DHD Mission
Material: High Carbon Steel
Drill Diameter: 65-800mm
Machine: Hydraulic Crawler Drill Rig
Drilling: Down The Hole Drilling, DTH Drilling
Tools: Top Hammer Drilling Tools
High Light:

down hole tools


down hole hammer

Basic Infomation
Place of Origin: Germany
Brand Name: ROSCHEN
Certification: ISO
Model Number: CIR90
Payment & Shipping Terms
Packaging Details: wooden box
Supply Ability: 100-1000 set
Product Description

CIR90 DTH Hammer Lower Air Pressure Down The Hole Hammer For Contruction Drilling

Hammer DTH are one of our main products. It is durable for being produced with advanced craftwork and good material. After many years search, we have rich experience in development and manufacturing high quality products, which adopted high-quality raw materials, advanced technology and passed through strictly inspection.

Hammer DTH are mainly used in Rock drilling, well drilling, tunnel drilling, pile drilling and other construction drilling, foundation drilling.


1. Deliver maximum energy to drilling bit, fast drilling speed and low air consumption
2. Smooth performance and long service life
3. Low problem rate and easy to maintenance
4. Easy to depart bit from hammer
5. Interchangeable with dth bit and drill pipe

Technical parameters:

Roschen has difference type for Down The Hole hammer DTH:

1) Low air pressure series, here is the recommend model CIR90 hammer DTH:


DTH hammer type CIR90
Length(less bit) 795mm
Weight(less bit) 22.0kg
External diameter Φ80mm
Bit shank IR3.5" CIR90/QT90
Hole range(mm) Φ90-130
Connection thread male T48*10*2
Working pressure 0.5-0.7Mpa
Impact rate 820rpm(6bar)
  10bar 120L/s(6bar)
Air consumption 18bar  



2) Medium air pressure series

3) High air pressure series



DTH hammer type HD35 HD45 HD55 HD55C HD65 HD85
Length(less bit) 930mm 1030mm 1170mm 1160mm 1248mm 1487mm
Weight(less bit) 24.5kg 39.2kg 71.5kg 70.00kg 98.00kg 188.00kg
External diameter Φ81mm Φ99m Φ125m Φ125mm Φ142m Φ180m
Bit shank IR3.5”COP34 COP44/ DHD340 COP54/ DHD350R HD55C DHD350Q COP64 /DHD360 COP84/ DHD380
Hole range(mm) Φ90-110 Φ110-135 Φ135-155 Φ135-155 Φ155-190 Φ195-254
Connection thread API 2 3/8” Reg. API 2 3/8” Reg. API 2 3/8” Reg. API 2 ³/8” Reg. API 2 ³/8” Reg. API 41/2” Reg.
    API 3 1/2” Reg. API 31/2” Reg.    
Working pressure 0.5-2.5Mpa 0.5-2.5Mpa 0.5-2.5Mpa 0.5-2.5Mpa 0.5-2.5Mpa 0.5-2.5Mpa
Impact rate at 17 Bar 28Hz 27Hz 25Hz 25Hz 23Hz 20Hz
Recommended Rotation speed 28r/min 25-40r/min 20-30r/min 20-30r/min 15-25r/min 15-20r/min
Air consumption 10bar 80L/s 100L/s 1450L/s 140L/s 175L/s 190L/s
18bar 1600L/s 180L/s 280L/s 280L/s 3400L/s 370L/s
24bar 210L/s 250L/s 390L/s 390L/s 475L/s 495L/s


Further products information, please don't hesitate to contact us.



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