Down the hole drilling machine, abbreviated as DTH drilling rig, as the name suggests, its core function is to use high air pressure to drive the drill bit to impact and break rocks, simultaneously completing deep hole drilling operations. It is suitable for deep hole construction in various geotechnical engineering projects, such as mine blasting holes, foundation reinforcement holes, and geological exploration holes. Traditional top-hammer drilling rigs rely on an impactor at the top of the drilling rig to strike the drill rod, and the energy is transmitted to the drill bit through the long drill rod. However, down-the-hole drilling equipment installs the impactor (hammer) directly at the rear end of the drill bit. During operation, the impactor enters the borehole together with the drill bit. The equipment adopts an integrated or modular design and is divided into two main categories: crawler type and portable type, depending on the model. It has a compact appearance and structure. The main frame is made of high-strength Q355B alloy steel, precisely welded by welding robots, and treated with sandblasting and rust removal. It is coated with imported anti-corrosion and wear-resistant paint, making it suitable for harsh outdoor construction environments. The overall structure is stable and has a long service life. If you are interested, please contact us now for more product information.
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Crawler Down the Hole Drilling Machine Parameter
| Model | YGS100A | YGS153 | YGS180 | YGS300 | YGS350 |
| Total weight | 5.95T | 3.8T | 6.3T | 6.8T | 8T |
| Walking speed | 2.5km/h | 2.5km/h | 2.5km/h | 2.2/3.8km/h | 4km/h 2km/h |
| Diesel tank capacity | 85L | 70L | 85L | 85L | 225L |
| Shipping size | 6500*2100*2400mm | 4640*1980*2260mm | 6600*2110*2500mm | 6600*2220*2600mm | 7600*2350*2800mm |
| Drilling hole diameter | 90-146mm | 83-130mm | 90-146mm | 90-152mm | 90-165mm |
| Power configuration | YCD4R22T-80 | YC2108 33kw/2400rpm | YCD4R22T-80 55kw | YC4DK80-T302 | YC4DK100-T304 73.5kw/2200rpm |
| Highest horizontal hole height | 3.2m | 2.8m | 3.6m | 3.25m | 3.5m |
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YG Down-the-Hole Drilling Machine Features
- High Air Pressure and High-Efficiency Drilling: Equipped with a high-power impactor, the air pressure can reach up to 2.5MPa, with an impact frequency of 1500 strokes/minute. Compared to traditional drilling equipment, drilling efficiency in hard rock formations is increased by more than 60%, enabling deep hole drilling with a diameter of Φ80-200mm and a depth of up to 30 meters, significantly shortening construction time.
- Precise Adaptation to Multiple Geological Conditions: Equipped with various specifications of down-the-hole drill bits, it can be flexibly changed according to different geological conditions, such as soft soil, sand layers, limestone, and granite. It also supports customized hole diameters, adapting to the drilling needs of mining, construction, geological exploration, and other industries.
- Intelligent and Stable Control: Adopting a PLC intelligent control system, it can monitor drilling depth, air pressure, rotation speed, and other parameters in real time, supporting depth preset and automatic shutdown functions to prevent over-drilling; the drill rod verticality is adjustable, ensuring a hole position accuracy error of ≤±2°, reducing the risk of rework.
- Energy-Saving and Consumption-Reducing Design: The optimized impactor structure and intelligent variable frequency technology can automatically adjust air pressure and rotation speed according to geological hardness, saving more than 20% energy compared to similar equipment; high-pressure air is recycled, and rock debris is efficiently discharged, reducing energy waste.
- Flexible Adaptation to Multiple Scenarios: Provides crawler and portable models. The crawler type can operate stably on muddy and rugged terrain, while the wheeled type is convenient for transfer. The portable down-the-hole drilling rig weighs only 50-150kg and can be manually carried to work in confined areas, adapting to different construction site needs.
- Comprehensive Safety Protection: Equipped with multiple safety devices such as air pressure overload protection, motor over-temperature protection, drill rod fracture warning, and emergency stop, and also features a rock debris splash guard, comprehensively ensuring the safety of construction personnel and equipment.
- Easy Maintenance Design: Key components are reasonably arranged and easy to disassemble. Wear parts such as down-the-hole drill bits and drill rods are highly interchangeable and easy to replace; the equipment is equipped with a fault diagnosis system, which can quickly locate the fault position, reducing maintenance difficulty and costs.
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Down-the-Hole Drilling Rig Customer Case Study: South African Gold Mine Project
- Customer Background: A large gold mining company in South Africa, responsible for open-pit and underground gold mining, required a large number of high-efficiency drilling rigs for blast hole drilling. The geology primarily consists of hard gold-bearing rock, demanding extremely high drilling efficiency and hole position accuracy.
- Problems Faced: The previously used drilling equipment suffered from insufficient air pressure, resulting in extremely low drilling efficiency in hard gold-bearing rock. A drilling speed of 1.5 meters per hour led to excessively long blast hole construction cycles, impacting mining progress. Simultaneously, large errors in hole position accuracy resulted in poor blasting effects and low gold recovery rates. Equipment maintenance costs were high, with frequent replacement of wear parts.
- Solution: The company purchased 15units YGS180 crawler-mounted down-the-hole drilling machines, equipped with diamond down-the-hole drill bits, for blast hole drilling operations. They also purchased 5 portable down-the-hole drilling rigs for drilling small exploration holes in underground mining.
- Results: The YGS180 equipment, with its high air pressure and high-frequency impact, achieved a drilling efficiency of 1.2 meters per minute in hard gold-bearing rock. Each machine completed an average of 90 blast holes per day, representing a 72% increase in efficiency compared to the original equipment, and shortening the blast hole construction cycle by 60%. Hole position accuracy error was ≤±2°, significantly improving blasting effects and increasing gold recovery rates from 85% to 92%. Equipment operation was stable, reducing maintenance costs by 40%. The portable equipment was suitable for working in confined underground spaces, providing accurate geological data for tunneling operations.
- Customer Feedback: “YG’s down-the-hole drilling machines are a core asset in our gold mining operations. The high-pressure design perfectly solved the drilling challenges in hard gold-bearing rock, exceeding our expectations in both efficiency and accuracy. The equipment is stable, easy to maintain, and the after-sales service is responsive. They have significantly improved our mining efficiency and reduced costs, making them a trustworthy partner.”
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Answering Frequently Asked Questions about the DTH Drilling Equipment
Answer: They can penetrate medium to hard rock formations such as granite (Mohs hardness 6-7) and sandstone. When equipped with PDC drill bits, drilling efficiency in soft rock is increased by 50%.
Answer: Made of wear-resistant alloy steel, they can be reused more than 200 times under normal maintenance. Drill rod flaw detection services are also provided.
Answer: Yes. The manufacturer provides free training on equipment operation, parameter adjustment, drill bit replacement, and maintenance; a professional technical team is available to provide construction plan guidance to ensure the smooth progress of the project.
Answer: Daily maintenance should include: cleaning the drill rods, drill bits, and air supply pipes after construction to avoid rock debris; regularly checking the airtightness of the air pressure system, engine oil, and hydraulic oil; checking the wear of the down-the-hole drill bits and replacing them promptly; and storing the equipment in a dry and ventilated place.
Answer: Supporting equipment, such as air compressors, generators, drill bits, and drill rods are needed. The manufacturer can provide a one-stop procurement service for a complete set of down-the-hole drilling equipment, ensuring compatibility between the supporting equipment and the main unit to avoid adaptation problems.
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Down the Hole Drilling Machine Manufacturer – YG Machinery Factory Price
In today’s drilling industry, where efficiency, precision, and cost control are paramount, the YG down-the-hole drilling machine stands out with its core advantages of high-pressure, high-efficiency drilling, adaptability to various geological conditions, flexible operation, and stable durability. Whether for large-scale mining, building foundation support, or small-scale geological exploration and mountain engineering, the YG down-the-hole drilling machine enables efficient, precise, and cost-effective drilling operations. As a professional drilling machinery manufacturer, YG not only provides high-quality down-the-hole drilling machines but also offers complete down-the-hole drilling equipment solutions and customized construction technical support. Our equipment has been exported to numerous countries and regions worldwide, earning widespread trust for its reliable quality and comprehensive service.
Click the inquiry button now to submit your project scale, geological conditions, and drilling requirements to receive a customized solution and accurate quotation; discuss equipment selection issues one-on-one; and receive more equipment photos, construction videos, and customer case studies!
