SD8 Down The Hole Hammer for Rock Drilling - 8" Size, 1.0-2.5MPa Working Pressure, 15-34m³/min Air Consumption
Price:
Negotiable
MOQ:
Negotiable
Delivery Time:
Negotiable
Brand:
ROSCHEN
Product Description
SD8 Down The Hole Hammer for Rock Drilling & Tunnel Engineering
ROSCHEN reverse circulation DTH hammers deliver exceptional performance with outstanding reliability and operational simplicity. These hammers are ideal for exploration and grade control processes, providing accurate sample collection with minimal contamination. RC drilling hammers typically enable continuous sample collection in significantly less time compared to conventional or wireline coring methods.
Technical Specifications
Standard DTH Hammers
| Hammer Size | Bit Shank | ROSCHEN Code | Connection Thread | Suitable Bit | Working Pressure | Air Consumption |
|---|---|---|---|---|---|---|
| 2" | BR2 | ROS 11 ROS 22 | RD50 box | 70-90mm | 0.7-1.75MPa | 4.5m³/min |
| 3" | DHD3.5 | ROS 32 | API 2 3/8" Reg | 90-110mm | 1.0-1.5MPa | 4.5-9m³/min |
| 4" | DHD340 | ROS 34 | API 2 3/8" Reg | 110-135mm | 1.0-2.5MPa | 6-15m³/min |
| 5" | DHD350 | ROS 52 ROS 54 | API 2 3/8" Reg/ API 3 1/2" Reg | 135-155mm | 1.0-2.5MPa | 9-23m³/min |
| 6" | DHD360 | ROS 62 ROS 64 | API 3 1/2" Reg | 155-190mm | 1.0-2.5MPa | 10-28.5m³/min |
| 8" | DHD380 | ROS 82 ROS 84 | API 4 1/2" Reg | 195-254mm | 1.0-2.5MPa | 15-34m³/min |
| 10" | SD10 | ROS 100 | API 6 5/8" Reg | 254-311mm | 1.0-2.5MPa | 22-55m³/min |
| 12" | DHD1120 | ROS 120 | API 6 5/8" Reg | 305-445mm | 1.0-2.5MPa | 30-78m³/min |
| 15" | Numa 150 | ROS 150 | API 6 5/8" Reg | 530-660mm | 1.0-2.5MPa | 30-78m³/min |
| 18" | Numa 180 | ROS 180 | API 6 5/8" Reg | 600-860mm | 1.0-2.5MPa | 30-78m³/min |
| 24" | Numa 240 | ROS 240 | API 6 5/8" Reg | 775-1000mm | 1.0-2.5MPa | 30-78m³/min |
Lower Pressure DTH Hammers
| Model | Drill Hole Dia. (mm) | Casing OD (mm) | Length (mm) | Weight (kg) | Work Pressure (MPa) | Air Consumption (m³/min) | Impact Frequency (T/min) |
|---|---|---|---|---|---|---|---|
| 65A DTH Hammer | 65-67 | 61 | 745 | 13 | 0.5-0.7 | 2.5 | ≥810 |
| 70A DTH Hammer | 74-76 | 67 | 766 | 15 | 0.5-0.7 | 3 | ≥810 |
| 80A DTH Hammer | 80-82 | 72 | 796 | 17 | 0.5-0.7 | 5.5 | ≥810 |
| 90 DTH Hammer | 90-100 | 80 | 796 | 22 | 0.5-0.7 | 7 | ≥840 |
| 110A DTH Hammer | 110-120 | 98 | 838 | 36 | 0.5-0.7 | 11 | ≥840 |
| DHD340 DTH Hammer | 110-140 | 98 | 1045 | 39 | 1.2-2.0 | 3.5-15 | ≥1140 |
| DHD350 DTH Hammer | 135-155 | 122 | 1213 | 57 | 0.6-2.5 | 7.5-9 | ≥1140 |
| DHD360 DTH Hammer | 152-190 | 139 | 1300 | 98 | 0.6-2.5 | 10.5-19 | ≥1140 |
Operation & Maintenance Guidelines
Proper operation and maintenance are essential for optimal DTH hammer performance and longevity.
- Under normal rock drilling conditions, service and clean the hammer every 200 hours of operation. For drilling holes or mud slagging, perform maintenance every 100 hours.
- Lubrication is achieved through the main engine oiling device. Ensure the oiling device is filled before each shift and has surplus oil remaining before the next shift begins. Use No. 20 mechanical oil in summer and No. 5-10 mechanical oil in winter.
- Before installing the hammer on the drill pipe, operate the exhaust valve to remove debris and check for oil presence in the drill pipe.
- Never reverse the DTH Hammer and drill rod in the hole to prevent accidents.
- When stopping drilling, do not immediately stop air supply. Lift the drill and blow it, then stop gas supply when no more rock and rock powder remain in the hole before stopping rotation.
Product Image
We offer various thread options including API, Metzke, Remet, and Fabe threads. Custom shank types are available upon request. Contact us for detailed product information and technical support.
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Company
ROSCHEN GROUP
Location
65 EAST XINHUAN ROAD, SHANGHAI, CHINA
Contact Person
Bill, George, Michael