Description
Down the hole rock tools (drilling tools) are rock drilling equipment which takes compressed air as power source to partially transfer impact power into drilling holes. An air distributing device in a top hammer controls a piston to move back and forth. An impact device arranged in the front of the top hammer transfers the impact powderto a down-the-hole bit to crush rocks.
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.
Applications
It is mainly used in geological exploration, coal mine, water conservancy and hydropower, highway, railway, bridge, construction and so on.
Specifications
| NSD Series High Air Pressure DTH Hammers Without Foot Valve Technical Data |
| Length(Without Bit) | NSD4A | NSD5A | NSD6A | NSD8A | NSD10A | NSD12A |
| 1012mm | 1090mm | 1011mm | 986mm | 1110mm | 1110mm |
| Weight(Without Bit) | 40.00kg | 70.00kg | 43.20kg | 37.00kg | 69.00kg | 66.00kg |
| External Diameter | Ø99mm | Ø126mm | Ø146mm | Ø180/Ø185mm | Ø226mm | Ø275mm |
| Bit Shank | SD4 | SD5 | SD6 | SD8 | SD10 | SD12 |
| Hole Range | Ø110-Ø135mm | Ø155-Ø190mm | Ø155-Ø203mm | Ø195-Ø254mm | Ø254-Ø311mm | Ø305-Ø445mm |
| Connection Thread | API2 3”/8REG | API2 3”/8REG API3 1”/2REG API2 7”/8REG | API3 1”/2REG | API4 1”/2REG | AP6 5”/8REG | API6 5”/8REG |
| 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 |
| Impact Rate at 17 Bar | 30HZ | 28HZ | 25HZ | 22HZ | 20HZ | 20HZ |
| Recommended Rotation Speed | 25-40r/min | 20-35r/min | 20-30r/min | 15-25r/min | 15-25r/min 20-35r/min | 15-25r/min |
| Air Consumption | 1.0Mpa:6.0m³/min 1.8Mpa:9.0m³/min 2.4Mpa:14.0m³/min | 1.0Mpa:7.0m³/min 1.8Mpa:14.0m³/min 2.4Mpa:19.0m³/min | 1.0Mpa:9.0m³/min 1.8Mpa:18.0m³/min 2.4Mpa:26.0m³/min | 1.0Mpa:12.0m³/min 1.8Mpa:22.0m³/min 2.4Mpa:28.0m³/min | 1.8Mpa:14.0m³/min 2.4Mpa:65.0m³/min | 1.0Mpa:28.0m³/min 1.8Mpa:50.0m³/min 2.4Mpa:71.0m³/min |
1.Price commitment: in order to ensure the high reliability of products, raw material selection are using grapefruit brand products; under the same competitive conditions, and not to reduce product technical performance on the basis of sincerity at a favorable price to customers.
2.Quality commitment: product manufacturing and testing have quality records and inspection data; the performance of the product can withstand customer inspection.
3.Customer service: in order to create new diamond brand, enhance the visibility of enterprises,establish corporate image, we serve customers with the principle of "preferential prices, good service, reliable product quality" principle.
The appearance of the picture is different from that of the actual product, and the actual product is the standard.
| NSD Series High Air Pressure DTH Hammers Without Foot Valve |
| Item Description | Weight(kg) |
| NSD4A | NSD5A | NSD6A | NSD8A | NSD10A | NSD12A |
| 1,Top Sub | 6.50 | 13.70 | 20.00 | 34.00 | 59.00 | 70.00 |
| 2,“O” Ring Of Top Sub | 0.10 | 0.015 | 0.015 | 0.015 | 0.03 | 0.04 |
| 3,Breakout Ring | - | - | - | 0.30 | 0.50 | 0.80 |
| 4,Chenck Valve | 0.35 | 0.70 | 0.70 | 1.20 | 1.40 | 2.00 |
| 5,Spring | 0.05 | 0.10 | 0.10 | 0.10 | 0.30 | 0.10 |
| 6,Air Distributor | 1.50 | 2.00 | 3.50 | 6.00 | 10.50 | 16.00 |
| 7,Internal Cylinder | 2.10 | 2.80 | 4.20 | 6.50 | 12.50 | 25.00 |
| 8,Piston | 8.50 | 15.00 | 23.00 | 42.50 | 77.00 | 113.00 |
| 9,External Cylinder | 15.30 | 24.00 | 28.00 | 59.00 | 110.00 | 175.00 |
| 10,Guided Sleeve | 1.30 | 2.60 | 2.50 | 6.00 | 11.50 | 25.00 |
| 11,“O” Ring Of Stop Ring | 0.005 | 0.01 | 0.01 | 0.01 | 0.01 | 0.01 |
| 12,Stop Ring | 0.20 | 0.50 | 0.50 | 1.20 | 1.50 | 4.50 |
| 13,Breakout Ring | - | - | - | 0.30 | 0.50 | 0.08 |
| 14,Drive Chuck | 4.00 | 7.50 | 7.50 | 16.00 | 31.50 | 48.00 |
| 15,Drill Bit | 9.80 | 16.00 | 27.00 | 37.00 | 108.00 | 165.00 |
Product Tags:
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Water Well / Borehole Drilling Tools NSD Series For Overburden / Ore Mining Images
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