Description
Reverse Circulation Hammer are used for blast hole drilling and
water well drilling project.Working with DTH drilling pipe and DTH
drill bit, mainly applied in Mining,Marble quarry or well drilling
and other construction projects.
Suitable choice of raw material, advanced processing technology and
perfect quality warranty.
With hardened treatment, drilling life can be extended and then
cost can be reduced.
Size range 4.5’’,5”,5.5 ’’ etc.
Shank styles: NRC45,NRC55,NRC65,PR52
Applications
Our DTH hammer are widely applied to open pit and underground
mining to drill blasting holes, drainage holes, ventilation holes,
center holes or blasting holes of raising boring, pipe holes and
other deep holesin all various strength rocks, such as quarry
exploitation, earthwork projects, water-well, constructionsand so
on.
Specifications
| 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 | 6.50 | 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, Sharout | - | - | - | 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 |
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.
