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| Place of Origin | Germany |
| Brand Name | ROSCHEN |
| Certification | ISO |
| Model Number | CIR90 |
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.
Advantages:
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 | |
| 24bar | ||
2) Medium air pressure series
3) High air pressure series
Specifications:
| 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.
ROSCHEN INC.
ROSCHEN GROUP LIMITED
ROSCHEN HOLDINGS LIMITED
Skype: ROSCHEN.TOOL , ROSCHEN_GROUP
Email: roschen@roschen.com ; roschen@roschen.net
Website: http://www.roschen.net ; http://www.roschen.cn
http://www.roschen.com ; http://www.roschengroup.com
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