Product selling point
Main features:
1. Valveless air distribution.More reliable.
2. Simple design of the piston.long life span.
3. More efficient energy transfer,faster drilling speed,lower air consumption and lower oil consumption.
4. Fewer parts,simple structure,each part are hardened, long working life and less failure and easier to maintain.
5. The top sub and the drive chuck are connected with the external cylinder by thread, which is easy to disassemble.
Item Description
Item Description | SD4 | SD5 | SD6 | SD8 | SD10 | SD12 |
| 1. Top Sub | 6.50 | 15.00 | 20.00 | 41.00 | 59.00 | 70.00 |
| 2. “O” Ring of Top Sub | 0.01 | 0.01 | 0.01 | 0.02 | 0.03 | 0.04 |
| 3. Breakout Ring | - | - | - | 0.20 | 0.30 | 0.80 |
| 4. Check Valve | 0.42 | 1.00 | 1.00 | 1.50 | 1.40 | 3.00 |
| 5. Spring | 0.04 | 0.10 | 0.05 | 0.10 | 0.30 | 0.10 |
| 6. Compression Buffer | 0.04 | 0.05 | 0.10 | 0.42 | 0.60 | 1.00 |
| 7. Air Distributor | 2.20 | 3.50 | 5.00 | 12.50 | 11.50 | 20.00 |
| 8. Internal Cylinder | 2.50 | 4.20 | 5.00 | 8.60 | 11.00 | 23.00 |
| 9. Piston | 9.00 | 15.50 | 24.00 | 42.00 | 62.00 | 125.00 |
| 10. External Cylinder | 15.60 | 25.00 | 35.00 | 65.00 | 110.00 | 170.00 |
| 11. Guided Sleeve | - | - | 0.01 | 0.05 | 0.03 | 0.04 |
| 12. “O” Ring of Stop Ring | 0.02 | 0.01 | 0.50 | 1.20 | 0.60 | 4.80 |
| 13. Stop Ring | 0.20 | 0.50 | 1.50 | 3.40 | 4.50 | 18.00 |
| 14. Breakout Ring | 0.01 | - | - | - | 0.30 | 0.80 |
| 15. Drive Chuck | 4.00 | 7.50 | 7.50 | 15.50 | 24.00 | 51.00 |
| 16. Drill Bit | - | - | - | - | - | - |
Technical Parameters
Technical Parameters | SD4 | SD5 | SD6 | SD8 | SD10 | SD12 |
Length (Without Bit) | 1084mm | 1175mm | 1261mm | 1463mm | 1502mm | 1880mm |
Weight (Without Bit) | 40.5kg | 72.5kg | 100kg | 192kg | 290kg | 487kg |
Outer Diameter | Ø99mm | Ø126mm | Ø142mm | Ø180mm | Ø226mm | Ø275mm |
Connection Thread | API2 3/8" REG | API3 1/2" REG | API3 1/2" REG | API4 1/2" REG | API4 1/2" REG | API6 5/8" REG |
Bit Shank | SD4 | SD5 | SD6 | SD8 | SD10 | SD12 |
Hole Range | Ø110-Ø135mm | Ø135-Ø155mm | Ø155-Ø190mm | Ø195-Ø254mm | Ø254-Ø311mm | Ø305-Ø445mm |
Working Pressure | 1.2-2.0Mpa | 1.3-2.3Mpa | 1.5-2.5Mpa | 1.5-3.0Mpa | 2.0-3.5Mpa | 2.0-3.5Mpa |
Recommended Rotation Speed | 25-40r/min | 25-35r/min | 20-30r/min | 15-25r/min | 20-30r/min | 15-25r/min |
Air Consumption | 1.0Mpa: 6m³/min | 1.0Mpa: 9m³/min | 1.0Mpa: 10m³/min | 1.0Mpa: 15m³/min | 1.0Mpa: 22m³/min | 1.0Mpa: 30m³/min |
DTH hammer SD4/SD5/SD6/SD8/SD10/SD12
Contact Us
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Contact Us
E-mail: zyzcjx@163.com
Add: No.11 Tongyang East Road,Jingzhang Olympic Park Area, Xuanhua District, Zhangjiakou City, Hebei, China
Copyright © Zhangjiakou Xuanhua BroadVision Drilling Machinery Co. Ltd.