Advantages Of NRC Reverse Circulation Hammer:
1. According to the previous experience of ordinary percussion equipment, combined with the trial characteristics of the counter-circulation impactor, optimize the internal structure to make the ability transfer ideal, so as to guarantee the fast drilling speed of this series of impactor and the steady continuous sampling.
2. The internal structure is very simple and the parts are rigid, which ensures long life of the impactor and easy maintenance.
3. The acquisition pipe is one-piece, which can be replaced without removing the impactor.
The acquisition pipe is carburized, so it has good wear resistance.
4. The matching bit adopts the patented design, only the bit needs to be replaced, the same impactor can drill holes of different sizes, and the sample can be guaranteed free from contamination.
5. Under various difficult conditions such as loose soil, hard rock and plenty of water, the sampling work can be completed well.
Specification Of NRC Reverse Circulation Hammer
| Item Description | Weight(kg) | |||
| NRC45 | NRC55 | NRC65 | NRC52 | |
| 1、Internal Ciclip | 0.03 | 0.04 | 0.05 | 0.04 |
| 2、Air Screen | 0.35 | 0.44 | 0.65 | 0.44 |
| 3、Top Sub | 6.5 | 9.65 | 20 | 9.65 |
| 4、“O”Ring | 0.01 | 0.02 | 0.02 | 0.02 |
| 5、Sample Tube | 5.1 | 6.72 | 12.5 | 6.75 |
| 6、Check Valve | 0.25 | 0.68 | 0.85 | 0.68 |
| 7、Spring | 0.04 | 0.12 | 0.1 | 0.12 |
| 8、“O”Ring | 0.01 | 0.02 | 0.02 | 0.02 |
| 9、Air Distributor | 0.85 | 1.48 | 3.5 | 1.48 |
| 10、“O”Ring | 0.02 | 0.01 | 0.02 | 0.01 |
| 11、Internal Cylinder | 2.2 | 4.12 | 4.2 | 4.12 |
| 12、Piston | 8.5 | 16.9 | 24 | 16.9 |
| 13、External Cylinder | 14.5 | 19.5 | 32 | 21.5 |
| 14、Guided Sleeve | 1.2 | 0.9 | 5.5 | 1.9 |
| 15、“O”Ring | – | – | – | 0.02 |
| 16、Stop “O”Ring | – | – | – | 0.01 |
| 17、Stop Ring | – | – | – | 0.32 |
| 18、Sharout | – | – | – | 1.86 |
| 19、Drive Chuck | 3.2 | 5.65 | 6.5 | 4.17 |
| 20、Bit Retaining Pin | 0.01 | 0.15 | 0.3 | – |
| 21、Drill Bit | 10.5 | 15.8 | 31 | 11.05 |
| Technical Data | ||||
| Length(Without Bit) | NRC45 | NRC55 | NRC65 | NRC52 |
| 1020mm | 1111mm | 1250mm | 1208mm | |
| Weight(Without Bit) | 94.00 kg | 66.50 kg | 110.00kg | 70.00kg |
| External Diameter | Ø99mm | Ø126mm | Ø146mm | Ø126mm |
| Bit Shank | NRC45 | NRC55 | NRC65 | PR52 |
| Hole Range | Ø114-Ø127mm | Ø133-Ø15mm | Ø155-Ø190mm | Ø133-Ø146mm |
| Connection Thread | Custom support | Custom support | Custom support | Custom support |
| Working Pressure | 1.0-3.0Mpa | 1.5-3.5Mpa | 1.5-3.5Mpa | 1.5-3.5Mpa |
| 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:8m³/min | 1.7Mpa:16m³/min | 1.7Mpa:20m³/min | 1.7Mpa:16m³/min |
| 1.8Mpa:12m³/min | 2.4Mpa:22m³/min | 2.0Mpa:26m³/min | 2.4Mpa:22m³/min | |
| 2.4Mpa:16m³/min | 3.0Mpa:28m³/min | 3.0Mpa:35m³/min | 3.0Mpa:28m³/min | |
Reviews
There are no reviews yet.