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ND seriesBorewell Drilling Hammers without foot valve for Rock chisel
Description
Choosing the right hammer is largely determined by hole size and type of rock formation. Ideally, the size of the hammer should match the required hole dimension as closely as possible, leaving just enough space for cuttings to evacuate the hole.
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.
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
ND Series High Air Pressure DTH Hammers Without Foot Valve Technical Data | ||||||
Length(Without Bit) | ND25A | ND35A | ND45A | ND45S | ND55A | ND55S |
872mm | 888mm | 1011mm | 986mm | 1110mm | 1110mm | |
Weight(Without Bit) | 16.00kg | 25.00kg | 43.20kg | 37.00kg | 69.00kg | 66.00kg |
External Diameter | Ø71mm | Ø82mm | Ø99mm | Ø92mm | Ø126mm | Ø116mm |
Bit Shank | ND25 | IR35 | COP44/ DHD340 | COP44/ DHD340 | COP54/ DHD350R | COP54/ DHD350R |
Hole Range | Ø71-Ø90mm | Ø90-Ø115mm | Ø110-Ø135mm | Ø105-Ø120mm | Ø135-Ø155mm | Ø127-Ø145mm |
Connection Thread | T42x10x1.5 | API2 3”/8REG | API2 3”/8REG | API2 3”/8REG | API2 3”/8REG API3 1”/2REG API2 7”/8REG 2 7”/8 IF | API2 3”/8REG API3 1”/2REG API2 7”/8REG |
Working Pressure | 1.0-1.5Mpa | 1.0-1.5Mpa | 1.2-2.0Mpa | 1.2-2.0Mpa | 1.3-2.3Mpa | 1.3-2.3Mpa |
Impact Rate at 14 Bar | 25HZ | 25HZ | 30HZ | 30HZ | 28HZ | 28HZ |
Recommended Rotation Speed | 22-35r/min | 25-40r/min | 22-35r/min | 25-40r/min | 20-35r/min | 25-35r/min |
Air Consumption | 1.0Mpa: 4.0m³/min 1.5Mpa: 6.0m³/min | 1.0Mpa: 3.8m³/min 1.5Mpa: 7.5m³/min | 1.0Mpa: 6.0m³/min 1.8Mpa: 10.0m³/min 2.4Mpa: 15.0m³/min | 1.8Mpa: 8.0m³/min 2.4Mpa: 13.0m³/min | 1.0Mpa: 7.0m³/min 1.8Mpa: 14.0m³/min 2.4Mpa: 19.0m³/min | 1.0Mpa: 7.0m³/min 1.8Mpa: 13.5m³/min 2.4Mpa: 18.0m³/min |
ND Series High Air Pressure DTH Hammers Without Foot Valve Technical Data | |||||
Length(Without Bit) | ND55C(A) | ND65A | ND75A | ND85A | ND1120A |
1102mm | 1238mm | 1258mm | 1359mm | 1880mm | |
Weight(Without Bit) | 68.00kg | 98.00kg | 120.00kg | 175.00kg | 474.00kg |
External Diameter | Ø126mm | Ø142/Ø146mm | Ø165mm | Ø180/Ø185mm | Ø275mm |
Bit Shank | ND55C/DHD350Q | COP64/DHD360 | COP64/DHD360 | COP84/DHD380 | CDHD1120 |
Hole Range | Ø135-Ø155mm | Ø155-Ø203mm | Ø175-Ø216mm | Ø195-Ø254mm | Ø305-Ø445mm |
Connection Thread | API2 3”/8REG API3 1”/2REG API2 7”/8REG | API3 1”/2REG | API3 1”/2REG | API4 1”/2REG | API6 5”/8REG |
Working Pressure | 1.3-2.3Mpa | 1.5-3.0Mpa | 1.5-3.0Mpa | 1.5-3.0Mpa | 2.0-3.5Mpa |
Impact Rate at 17 Bar | 28HZ | 25HZ | 23HZ | 22HZ | 20HZ |
Recommended Rotation Speed | 22-35r/min | 20-30r/min | 20-30r/min | 15-25r/min | 15-25r/min |
Air Consumption | 1.0Mpa:8.0m³/min 1.8Mpa:6.0m³/min 2.4Mpa:19.0m³/min | 1.0Mpa:9.0m³/min 1.8Mpa:18.0m³/min 2.4Mpa:26.0m³/min | 1.0Mpa:11.0m³/min 1.8Mpa:20.0m³/min 2.4Mpa:28.0m³/min | 1.0Mpa:12.0m³/min 1.8Mpa:22.0m³/min 2.4Mpa:28.0m³/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".
ND Series High Air Pressure DTH Hammers Without Foot Valve | |||||||||||
Item Description | Weight(kg) | ||||||||||
ND25A | ND35A | ND45A | ND45S | ND55A | ND55S | ND55C(A) | ND65A | ND75A | ND85A | ND1120A | |
1, Top Sub | 3.10 | 4.20 | 6.50 | 6.00 | 13.70 | 13.30 | 13.70 | 20.00 | 23.00 | 34.00 | 70.00 |
2, “O” Ring Of Top Sub | - | 0.01 | 0.01 | 0.01 | 0.015 | 0.015 | 0.015 | 0.02 | 0.015 | 0.015 | 0.04 |
3, Breakout Ring | - | - | - | - | - | - | - | - | - | 0.30 | 0.80 |
4, Chenck Valve | 0.10 | 0.20 | 0.35 | 0.30 | 0.70 | 0.70 | 0.70 | 0.70 | 0.70 | 1.20 | 2.00 |
5, Spring | 0.05 | 0.02 | 0.05 | 0.05 | 0.10 | 0.10 | 0.10 | 0.10 | 0.10 | 0.10 | 0.10 |
6, Air Distributor | 0.60 | 0.80 | 1.50 | 1.30 | 2.00 | 1.90 | 2.00 | 3.50 | 4.50 | 6.00 | 16.00 |
7, Internal Cylinder | 0.80 | 1.30 | 2.10 | 1.90 | 2.80 | 2.70 | 2.80 | 4.20 | 6.50 | 6.50 | 25.00 |
8, Piston | 3.80 | 5.50 | 8.50 | 7.80 | 15.00 | 14.50 | 15.00 | 23.00 | 28.00 | 42.50 | 113.00 |
9, External Cylinder | 4.50 | 9.50 | 15.20 | 14.60 | 24.00 | 23.00 | 25.00 | 31.50 | 40.00 | 60.00 | 173.00 |
10, Guided Sleeve | 0.60 | 1.00 | 1.30 | 1.20 | 2.60 | 2.50 | 3.20 | 6.50 | 7.50 | 5.30 | 24.00 |
11, “O” Ring Of Stop Ring | 0.005 | 0.05 | 0.01 | 0.005 | 0.01 | 0.01 | 0.01 | 0.01 | 0.01 | 0.01 | 0.01 |
12, Stop Ring | 0.10 | 0.15 | 0.30 | 0.20 | 0.50 | 0.50 | 0.50 | 0.60 | 0.80 | 1.20 | 4.00 |
13, Breakout Ring | - | - | - | - | - | - | - | - | - | 0.30 | 0.80 |
14, Drive Chuck | 1.40 | 1.90 | 3.40 | 3.40 | 6.50 | 6.20 | 4.000 | 6.00 | 8.00 | 17.50 | 46.00 |
15, Drill Bit | 3.20 | 5.00 | 9.00 | 8.50 | 16.00 | 15.50 | 15.90 | 26.00 | 28.50 | 40.00 | 140.00 |