Special Notice:
The listed price is only a deposit for the product and does not include shipping fees. If you want to know the specific price of the product, please provide us with your specific requirements. We will promptly provide you with a detailed quotation. We hope to have a pleasant cooperation!
8 Inch DTH Hammers and Bits Down The Hole For Rock Drilling DTH Impactor
| Item Description |
Weight (Kg) |
| Top Sub | 34 |
| "O" Ring of Top Sub | 0.015 |
| Breakout Ring | 0.3 |
| Check Valve | 1.2 |
| Spring | 0.1 |
| Air Distributor | 6 |
| Internal Cylinder | 6.5 |
| Piston | 42.5 |
| External Cylinder | 60 |
| Guided Sleeve | 5.3 |
| "O" Ring of Stop Ring | 0.01 |
| Stop Ring | 1.2 |
| Breakout Ring | 0.3 |
| Drive Chuck | 17.5 |
| Drill Bit | 40 |
Technical Data
| Length (Less bit) |
1359mm |
| Weight (Less bit) |
175.00Kg |
| External diameter |
180mm |
| Bit Shank |
Cop84 DHD380 |
| Hole Range |
195-254mm |
| Connection Thread |
API 4 1/2"Reg |
| Working Pressure |
1.0—2.5Mpa |
| Impact rate at 1.7Mpa |
22Hz |
| Recommended rotation speed |
15-25r/min |
| Air consumption |
1.0Mpa |
12m³/min |
| 1.8Mpa |
22m³/min |
| 2.4Mpa |
28m³/min |
Product Features
This is a high air pressure DTH Hammer without footvalve, featuring our newest design. It is one of the most advanced DTH Hammers available globally with the following advantages:
- Eliminates issues with foot valve fracture, expansion, and contraction.
- Lower energy consumption and higher impact frequency. Drilling speed is 15%-30% higher than models with foot valves.
- Simple structure with reliable parts, ensuring long life and easy, low-cost maintenance.
- Reduced air and oil consumption. Oil usage is approximately 10% lower than models with foot valves.
Our Services
- Drill pipe manufacturing strictly according to ISO9001 standards.
- Quality guarantee: return support for quality issues found within one month of package receipt.
- Strict adherence to contract obligations and responsibilities.
- 24-hour online customer service support.
Frequently Asked Questions
What are your main products and their applications?
Our products include core barrels, casings, drill rods, drill rigs, and other drilling components. They are primarily used for mineral exploration and geological drilling.
What are the available delivery and payment terms?
We accept T/T, L/C, Western Union, and Paypal. Terms usually require a 30% deposit in advance with the balance due before delivery. Minimum order quantity starts from 1 piece, and transportation is available via sea or train.
Do you support sample orders?
Yes, we accept sample orders. Please reach out to our team for specific details and arrangements.
What kind of after-sales service do you provide?
With decades of manufacturing expertise, we offer prompt technical support for all queries. We also accept product returns or replacements for verified quality issues.
How is product quality controlled?
Quality is our priority. We maintain strict inspection procedures for all raw materials and finished products, fully complying with ISO9001 certification standards.
What is the typical working pressure for the 8-inch DTH hammer?
The recommended working pressure for our 8-inch DTH hammer ranges between 1.0 and 2.5 Mpa for optimal performance.
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