N125
Home / DTH Hammers / ND Series
N125 With Foot Valve DTH Hammer
This Series high air pressure DTH hammers working with foot-valve.
- Valveless air distribution enhances reliability.
- The piston's simple design ensures a longer lifespan.
- Achieve faster drilling with more efficient energy transfer, reduced air and oil consumption.
- With fewer internal parts and a simple, heat-treated structure, our design promises durability, minimal failures, and easy maintenance.
- Disassembly is straightforward, thanks to the multi-step threaded connections between the top sub, drive chuck, and external cylinder.
N125 Structure
| Ref. | Parts | Weight | Part No. | Ref. | Parts | Weight | Part No. |
|---|---|---|---|---|---|---|---|
| 01 | Top Sub | 163.5 Kg | 01-N125-01 | 12 | “O”Ring | 0.03 Kg | 01-N125-12 |
| 02 | Adjuster Shim | 1.5 Kg | 01-N125-02 | 13 | Piston | 154 Kg | 01-N125-13 |
| 03 | “O”Ring | 0.03 Kg | 01-N125-03 | 14 | Piston Case | 246.5Kg | 01-N125-14 |
| 04 | Check Valve | 1.5 Kg | 01-N125-04 | 15 | Guided Sleeve | 12.7 Kg | 01-N125-15 |
| 05 | Spring | 0.2 Kg | 01-N125-05 | 16 | Check Ring | 0.2 Kg | 01-N125-16 |
| 06 | Adjuster Shim | 0.7 Kg | 01-N125-06 | 17 | Retainer Ring | 7 Kg | 01-N125-17 |
| 07 | Rubber Buffer | 0.3 Kg | 01-N125-07 | 18 | “O”Ring | 0.3 Kg | 01-N125-18 |
| 08 | Rubber Buffer | 0.3 Kg | 01-N125-08 | 19 | Adjuster Shim | 1.5 Kg | 01-N125-19 |
| 09 | Valve Seatt | 11.8 Kg | 01-N125-09 | 20 | Driver Chuck | 68.5 Kg | 01-N125-20 |
| 10 | Rigid Valve | 27,4 Kg | 01-N125-10 | 21 | Drill Bit | 01-N125-21 | |
| 11 | “O”Ring | 0.03 Kg | 01-N125-11 |
Technical Parameter
| Length(Less bit) | Weight | Outer Diameter | Connection Thread | Bit Shank | Hole Range |
|---|---|---|---|---|---|
| 1785mm | 698Kg | φ305mm | API6 5/8″REG | NUMA125 | φ330-φ400mm |
| Work Pressure | Recommended rotation speed | Air Consumption | |||
| 1.8Mpa | 2.4Mpa | ||||
| 1.5-3.3 Mpa | 25～45 r/min | 46m³/min | 58m³/min | ||
Contact us
Request A Quote
Welcome to contact us at any time to get the latest product information and quotations.
Email address
info@rockdrillmaster.com
sales@rockdrillmaster.com
Phone numbers
Mobile : +86 188 2419 8826
Our location
Pingjiang Industrial Park, Yueyang,
Hunan Province, China