NUMA Series DTH hammer High Air Pressure With Long Life Span
Features:
1. Simple and reasonable design, easy to assemble and dis-assemble, low problem rate.
2. Low air consumption, smooth drilling, maximum impact power, high penetration rate.
3. Multiple precise heat-treatment with all hammer parts to provide longest lifespan under roughest working conditions.
The Characteristics of High Air Pressure DTH Hammers With Foot Valve:
It is a kind of valveless high air pressure DTH hammer with foot valve. It has the following advantages:
The main features are as following:
1. Valveless air distribution, more reliable.
2. Simple design of the piston. Long life span.
3. More efficient energy transfer, faster drilling speed, low air consumption and lower oil consumption.
4. Fewer internal parts, simple structure, long life span, less failure and easier to maintain because all the parts are heat treated.
5. Easy to disassemble because the top sub, the drive chuck and the external cylinder are connected by multiple steps thread.
NUMA Series High Air Pressure DTH Hammer With Foot Valve Specification:
| High Air Pressure DTH Hammer With Foot Valve - NUMA Series DTH Hammer |
| Description | Weight(kg) |
| N100 | N120 | N125 |
| 1.Top sub | 59.00 | 70.00 | 70.00 |
| 2. O-ring Of Top Sub | 0.03 | 0.04 | 0.04 |
| 3.Breakout Ring | 0.40 | 0.80 | 0.80 |
| 4.Check Valve | 1.60 | 3.00 | 3.00 |
| 5. Spring | 0.30 | 0.10 | 0.10 |
| 6. Compression Buffer | 0.60 | 1.00 | 1.00 |
| 7. Air Distributor | 11.50 | 20.00 | 20.00 |
| 8. Internal cylinder | 11.00 | 23.00 | 23.00 |
| 9. Piston | 62.00 | 125.00 | 125.00 |
| 10. External Cylinder | 112.00 | 170.00 | 170.00 |
| 11. Guided Sleeve | - | 18.00 | - |
| 12. O-ring Of Stop Ring | 0.03 | 0.04 | 0.01 |
| 13. Stop Ring | 1.50 | 4.50 | 4.00 |
| 14. Breakout Ring | 0.40 | 0.80 | 0.80 |
| 15. Drive Chuck | 26.00 | 49.00 | 45.00 |
| 16. Drill Bit | 115.00 | 120.00 | 175.00 |
| Technical Data |
| Model | N100 | N120 | N125 |
| Length (Without Bit) | 1510mm | 1900mm | 1900mm |
| Weight (Without Bit) | 288.00kg | 485.00kg | 480.00kg |
| External Diameter | φ226mm | φ275mm | φ275mm |
| Bit Shank | NUMA100 | NUMA120 | NUMA125 |
| Hole Range | φ254 - φ311mm | φ305- φ445mm | φ305- φ445mm |
| Connection Thread | API 4 1/2 '' Reg, API 6 5/8 '' Reg | API 6 5/8 '' Reg | API 6 5/8 '' Reg |
| Working Pressure | 2.0 - 3.5 Mpa | 2.0 - 3.5 Mpa | 2.0 - 3.5 Mpa |
| Impact Rate at 17 Bar | 18HZ | 16HZ | 16HZ |
| Recommended Rotation Speed | 15 - 25 r/min | 15 - 25 r/min | 15 - 25 r/min |
| Air Consumption | 1.0Mpa: 22 m³/ min | 1.0Mpa: 30 m³/ min | 1.0Mpa: 30 m³/ min |
| 1.8Mpa: 45 m³/ min | 1.8Mpa: 56 m³/ min | 1.8Mpa: 56 m³/ min |
| 2.4Mpa: 60 m³/ min | 2.4Mpa: 78 m³/ min | 2.4Mpa: 78 m³/ min |
The Characteristics of High Air Pressure DTH Hammers Without Foot Valve:
It is a kind of high air pressure DTH hammer without foot valve, and it is our newest design. It is also one of the most advanced DTH hammers in the world.
It has the following advantages:
1. Out of the trouble of foot valve fracture and expansion and contraction.
2. Lower energy consumption and higher impact frequency. The drilling speed is 15-30% higher than the one with foot valve.
3. Simple structure, reliable parts, long life span, easy and cheap maintenance.
4. Lower air and oil consumption. The oil consumption is about 10% lower than the one with foot valve.
NUMA Series High Air Pressure DTH Hammer Without Foot Valve Specification:
| High Air Pressure DTH Hammer Without Foot Valve - N Series DTH Hammer |
| Description | Weight(kg) |
| N100A | N120A | N125A |
| 1.Top sub | 59.00 | 70.00 | 70.00 |
| 2. O-ring Of Top Sub | 0.03 | 0.04 | 0.04 |
| 3.Breakout Ring | 0.50 | 0.80 | 0.80 |
| 4.Check Valve | 1.40 | 2.00 | 2.00 |
| 5. Spring | 0.30 | 0.10 | 0.10 |
| 6. Air Distributor | 10.50 | 16.00 | 16.00 |
| 7. Internal cylinder | 12.50 | 25.00 | 25.00 |
| 8. Piston | 77.00 | 113.00 | 113.00 |
| 9. External Cylinder | 110.00 | 170.00 | 170.00 |
| 10. Guide sleeve | 4.50 | 25.00 | 23.00 |
| 11. O-ring Of Stop Ring | 0.02 | 0.01 | 0.01 |
| 12. Stop Ring | 1.90 | 4.50 | 4.00 |
| 13. Breakout Ring | 0.50 | 0.80 | 0.80 |
| 14. Drive Chuck | 25.50 | 48.00 | 45.00 |
| 15. Drill Bit | 106.00 | 164.00 | 175.00 |
| | | | |
| Technical Data |
| Model | N100A | N120A | N125A |
| Length (Without Bit) | 1545mm | 1880mm | 1880mm |
| Weight (Without Bit) | 305.00kg | 475.00kg | 470.00kg |
| External Diameter | φ226mm | φ275mm | φ275mm |
| Bit Shank | NUMA100 | NUMA120 | NUMA125 |
| Hole Range | φ254 - φ311mm | φ305- φ445mm | φ305- φ445mm |
| Connection Thread | API 4 1/2 '' Reg, API 5 1/2 '' Reg | API 5 1/2 '' Reg, API 6 5/8 '' Reg | API 5 1/2 '' Reg, API 6 5/8 '' Reg |
| Working Pressure | 2.0 - 3.5 Mpa | 2.0 - 3.5 Mpa | 2.0 - 3.5 Mpa |
| Impact Rate at 17 Bar | 20HZ | 20HZ | 20HZ |
| Recommended Rotation Speed | 15 - 25 r/min | 15 - 25 r/min | 15 - 25 r/min |
| Air Consumption | 1.0Mpa: 22 m³/ min | 1.0Mpa: 28 m³/ min | 1.0Mpa: 28 m³/ min |
| 1.8Mpa: 40 m³/ min | 1.8Mpa: 50 m³/ min | 1.8Mpa: 50 m³/ min |
| 2.4Mpa: 65 m³/ min | 2.4Mpa: 71 m³/ min | 2.4Mpa: 71 m³/ min |
Applications
- Blast hole
- Water well
- Environmental
- Exploration
- Construction
Factory
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Numa Series DTH Hammers High Air Pressure 225mm 275mm With Long Life Span Images
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