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.
A, using the raw material of super coarse grain hard alloy, the
alloy has been sintered under pressure to improve the hardness and
toughness of the bit.
B, unique design, improve drilling speed, use significantly improve
life.
C, select advanced steel to ensure that the overall performance of
the bit is consistent.
D, after sale guarantee, to replace the bad goods package.
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
N Series High Air Pressure DTH Hammers Without Foot Valve Technical Data |
| Length(Without Bit) | N100A | N120A | N125A |
| 1545mm | 1880mm | 1880mm |
| Weight(Without Bit) | 305.00kg | 475.00kg | 470.00kg |
| External Diameter | Ø226mm | Ø275mm | Ø275mm |
| Bit Shank | NUMA100 | NUMA120 | NUMA125 |
| Hole Range | Ø254-Ø311mm | Ø305-Ø445mm | Ø305-Ø445mm |
| Connection Thread | API4 1/2REG API5 1”/2REG | API5 1/2REG API6 5”/8REG | API5 1/2REG API6 5”/8REG |
| Working Pressure | 2.0-3.5Mpa | 2.0-3.5Mpa | 2.0-3.5Mpa |
| Impact Rate at 17 Bar | 20HZ | 20HZ | 20HZ |
| Recommended Rotation Speed | 15-25r/min | 15-25r/min | 15-25r/min |
| Air Consumption | 1.0Mpa:22.0m³/min 1.8Mpa:40.0m³/min 2.4Mpa:65.0m³/min | 1.0Mpa:28.0m³/min 1.8Mpa:50.0m³/min 2.4Mpa:71.0m³/min | 1.0Mpa:28.0m³/min 1.8Mpa:50.0m³/min 2.4Mpa:71.0m³/min |
Feature Advantage
1 Price commitment: in order to ensure the high reliability of
products, high-quality brand products are selected for raw material
selection. Under the same competitive conditions, the products will
be provided to customers at a favorable price without reducing the
technical performance of products.
2 Quality commitment: the manufacture and inspection of the
products have quality records and testing data, and the performance
of the products can stand the customer's inspection.
3 Customer service: in order to create new Jingang brand, enhance
corporate reputation and set up corporate image, we serve customers
with the principle of "preferential price, considerate service and
reliable product quality".
The appearance of the picture is different from that of the actual
product, and the actual product is the standard.
| N Series High Air Pressure DTH Hammers Without Foot Valve |
| Item Description | Weight(kg) |
| N100A | N120A | N125A |
| 1,Top Sub | 59.00 | 70.00 | 70.00 |
| 2,“O” Ring Of Top Sub | 0.03 | 0.04 | 0.04 |
| 3,Breakout Ring | 0.50 | 0.80 | 0.80 |
| 4,Chenck Valve | 1.40 | 2.00 | 2.00 |
| 5,Spring | 0.30 | 0.10 | 0.10 |
| 6,Air Distributor | 10.50 | 16.00 | 16.00 |
| 7,Internal Cylinder | 12.50 | 25.00 | 25.00 |
| 8,Piston | 77.00 | 113.00 | 113.00 |
| 9,External Cylinder | 110.00 | 170.00 | 170.00 |
| 10,Guided Sleeve | 4.50 | 25.00 | 23.00 |
| 11,“O” Ring Of Stop Ring | 0.02 | 0.01 | 0.01 |
| 12,Stop Ring | 1.90 | 4.50 | 4.00 |
| 13,Breakout Ring | 0.50 | 0.80 | 0.80 |
| 14,Drive Chuck | 25.50 | 48.00 | 45.00 |
| 15,Drill Bit | 106.00 | 164.00 | 175.00 |
