RC545 Reverse Circulation Nrc Series Hard Rock Drilling DTH Hammers
NRC series reverse circulation DTH hammer is the latest developed product of our company. It is mainly used for deep exploration drilling and core sampling.
| Product name | DTH Hammer |
| Material | Alloy Steel&Tungsten Carbide |
| Use | Underground Mining,Water well,Mining,Quarry etc. |
| Color | Green&Others |
| Heat treatment | Anneal |
| Shank series |
DHD,COP,MISSION, SD, DHD, BR, QL, BR,CIR etc. |
| Application | heavy construction,Ore Drilling, mining, oil and gas, quarries |
Hole |
60-305mm |
| Size | 2/3/4/5/6/7/8/9/10/12/14 inches |
| Advantage | High Performance and factory price |
The Characteristics of RC Hammers
RC series reverse circulation DTH Hammer is the latest developed product of our company. It is mainly used for deep exploration drilling and ore grade control.
It has the following characteristics:
1. Based on previous experience of ordinary hammers, combined with the features of reverse circulation hammer, optimized internal structure and ideal energy transfer, thus ensuring the series of hammers drilling with fast, smooth and continuous sampling.
2. The internal structure is very simple with components of high rigidity, thus ensuring long life and easy maintenance of the hammer.
3. The collection tube adopts an integrative design and can be replaced without disassembling the hammer. With carburizing treatment, it has good abrasive resistance.
4. Equipped with bits designed with patent. Simply by replacing the drill bit, the same hammer can drill holes of different sizes ensuring that the sample is not contaminated.
5. In difficult conditions such as loose soil, hard rock and plenty of water exists, sampling can be done well.
Reverse Circulation Hammers Specification:
| Reverse Circulation Hammers |
| Description | Weight(kg) |
| RC45 | RC55 | RC65 | RC52 |
| 1. Internal Circlip | 0.03 | 0.04 | 0.05 | 0.04 |
| 2. Air Screen | 0.35 | 0.44 | 0.65 | 0.44 |
| 3. Top Sub | 6.50 | 9.65 | 20.00 | 9.65 |
| 4. "O" Ring | 0.01 | 0.02 | 0.02 | 0.02 |
| 5. Sample Tube | 5.10 | 6.72 | 12.50 | 6.75 |
| 6. Check Valve | 0.25 | 0.68 | 0.85 | 0.68 |
| 7. Spring | 0.04 | 0.12 | 0.10 | 0.12 |
| 8. "O" Ring | 0.01 | 0.02 | 0.02 | 0.02 |
| 9. Air Distributor | 0.85 | 1.48 | 3.50 | 1.48 |
| 10. "O" Ring | 0.02 | 0.01 | 0.02 | 0.01 |
| 11. Internal Cylinder | 2.20 | 4.12 | 4.20 | 4.12 |
| 12. Piston | 8.50 | 16.90 | 24.00 | 16.90 |
| 13. External Cylinder | 14.50 | 19.50 | 32.00 | 21.50 |
| 14. Guided Sleeve | 1.20 | 0.90 | 5.50 | 1.90 |
| 15. "O" Ring | - | - | - | 0.02 |
| 16. Stop "O" Ring | - | - | - | 0.01 |
| 17. Stop Ring | - | - | - | 0.32 |
| 18. Shrout | - | - | - | 1.86 |
| 19. Drive Chuck | 3.20 | 5.65 | 6.50 | 4.17 |
| 20. Bit Retaining Pin | 0.01 | 0.15 | 0.30 | - |
| 21. Drill Bit | 10.50 | 15.80 | 31.00 | 11.05 |
| Technical Data | |
| Model | NRC45 | NRC55 | NRC65 | NRC52 |
| Length (Without Bit) | 1020mm | 1111mm | 1250mm | 1208mm |
| Weight (Without Bit) | 94.00kg | 66.50kg | 110.00kg | 70.00kg |
| External Diameter | φ99mm | φ126mm | φ146mm | φ126mm |
| Bit Shank | NRC45 | NRC55 | NRC65 | PR52 |
| Hole Range | φ114 - φ127mm | φ133- φ152mm | φ155- φ190mm | φ133- φ146mm |
| Connection Thread | As required | As required | As required | As required |
| Working Pressure | 1.0 - 3.0 Mpa | 1.5 - 3.5 Mpa | 1.5 - 3.5 Mpa | 1.5 - 3.5 Mpa |
| Impact Rate at 17 Bar | 30HZ | 35HZ | 28HZ | 35HZ |
| Recommended Rotation Speed | 25 - 40 r/min | 25 - 40 r/min | 25 - 40 r/min | 25 - 40 r/min |
| Air Consumption | 1.0Mpa: 8 m³/ min | 1.7Mpa: 16 m³/ min | 1.7Mpa: 20 m³/ min | 1.7Mpa: 16 m³/ min |
| 1.8Mpa: 12 m³/ min | 2.4Mpa: 22 m³/ min | 2.0Mpa: 26 m³/ min | 2.4Mpa: 22 m³/ min |
| 2.4Mpa: 16 m³/ min | 3.0Mpa: 28 m³/ min | 3.0Mpa: 35 m³/ min | 3.0Mpa: 28 m³/ min |
Applications
1. Mine and quarry
2. Road construction for the drilling and blasting work
3. Water well drilling
4. Slope protection
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RC545 Reverse Circulation Nrc Series Hard Rock Drilling DTH Hammers Images
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