Description
With professional manufacturing experience in DTH hammer production, our factory can supply you with high pressure and medium to low pressure DTH hammers. It strictly matches with API standard and other Chinese industry standards.It is durable for being produced with advanced craftwork and good material.
It also has the following advantages:
1. Deliver maximum energy to drilling bit, fast drilling speed and low air consumption due to the special inner structure of DTH hammer designed according to newest rock drilling theory.
2. Smooth performance and long service life of DTH hammer due to high quality alloy steel materials and advanced processing technology adapted.
3. Low problem rate and easy to maintenance due to simple, reliable and easy assemble and disassemble
inner structure of hammer.
4. Easy to depart bit from hammer due to multi—head thread connecting chuck and cylinder of hammer.
5. Interchangeable with DTH bit and drill pipe.
Applications
Widely used in mines, quarries, earthworks and other engineering drilling blasting hole, guardrail hole, mountain reinforcement, anchorage and other engineering holes, geothermal exploration hole, Well bore and other fields.
Specifications
|
NM Series High Air Pressure DTH Hammers Without Foot Valve
Technical Data
|
| Length(Without Bit) |
NM4A |
NM5A |
NM6A |
NM8A |
| 1005mm |
1110mm |
1161mm |
1338mm |
| Weight(Without Bit) |
40.00kg |
68.50kg |
90.00kg |
176.00kg |
| External Diameter |
Ø99mm |
Ø126mm |
Ø142mm Ø144mm
Ø146mm Ø148mm
|
Ø180/Ø185mm |
| Bit Shank |
NM4 |
NM5 |
NM6 |
NM8 |
| Hole Range |
Ø110-Ø135mm |
Ø155-Ø190mm |
Ø155-Ø203mm |
Ø195-Ø254mm |
| Connection Thread |
API2 3”/8REG |
API2 3”/8REG
API3 1”/2REG
API2 7”/8REG
|
API3 1”/2REG
API2 7”/8REG
2 7”/8 IF
|
API4 1”/2REG |
| Working Pressure |
1.2-2.0Mpa |
1.3-2.3Mpa |
1.5-2.5Mpa |
1.5-3.0Mpa |
| Impact Rate at 17 Bar |
30HZ |
28HZ |
25HZ |
22HZ |
| Recommended Rotation Speed |
25-40r/min |
20-35r/min |
20-30r/min |
15-25r/min |
| Air Consumption |
1.0Mpa:5.0m³/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
|
Feature Advantage
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.
| NM Series High Air Pressure DTH Hammers Without Foot Valve |
| Item Description |
Weight(kg) |
| NM4A |
NM5A |
NM6A |
NM8A |
| 1, Top Sub |
6.50 |
13.70 |
20.00 |
34.00 |
| 2, “O” Ring Of Top Sub |
0.10 |
0.015 |
0.015 |
0.015 |
| 3, Breakout Ring |
- |
- |
- |
0.30 |
| 4, Chenck Valve |
0.35 |
0.70 |
0.70 |
1.20 |
| 5, Spring |
0.05 |
0.10 |
0.10 |
0.10 |
| 6, Air Distributor |
1.50 |
2.00 |
3.50 |
6.00 |
| 7, Internal Cylinder |
2.10 |
2.80 |
4.20 |
6.50 |
| 8, Piston |
8.50 |
15.00 |
23.00 |
42.50 |
| 9, External Cylinder |
14.80 |
24.00 |
26.00 |
61.00 |
| 10, Guided Sleeve |
1.80 |
2.60 |
4.80 |
5.30 |
| 11, “O” Ring Of Stop Ring |
0.005 |
0.01 |
0.01 |
0.01 |
| 12, Stop Ring |
0.30 |
0.70 |
0.80 |
1.50 |
| 13, Breakout Ring |
- |
- |
- |
0.30 |
| 14, Drive Chuck |
3.80 |
6.50 |
4.20 |
17.30 |
| 15, Drill Bit |
6.60 |
13.50 |
23.00 |
31.00 |
Product Tags:
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Professional Borewell Drilling Hammers Erosion Resistant With Low Problem Rate Images
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