

DTH Drilling Rigs, also known as Down the Hole Drilling Rigs, are essential tools in the drilling industry. They are designed to efficiently drill holes in various types of terrains and geological conditions. These rigs have revolutionized the drilling process, offering higher drilling speeds, better hole quality, and increased productivity.
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Parameters of Portable DTH Drilling Rigs
Model | YGD-70 | YGD-100 |
Drilling Hole Diameter | 50-90mm | 90-130mm |
Drilling Depth | 15m | 0-25m |
Drilling Speed | 110r/min | 110r/min |
Working Air Pressure | 0.5-0.7mpa | 0.5-1.0mpa |
Air Consumption | 4m³/min | 6m³/min |
Cylinder Diameter | 90mm | 140mm |
Max. Propelled Force | 8000N | 9600N |
Drilling Rod OD | 42mm | 50-60mm |
Drilling Rod Length | 1025mm | 1025mm |
Dimension | 1740*260*420mm | 2280*440*550mm |
Weight | 280kg | 470kg |
Parameters of Crawler DTH Drilling Rigs
Rock hardness | f=6~18 |
Drilling diameter | 90~146mm |
Drilling depth | 30m |
Walking speed | 2.5km/h |
Gradeability | 30° |
Towing air compressor gradability | 13° |
Swing speed | 0~170r/min |
Rotation torque | 2960N/M |
Working pressure | 0.7~1.7MPa |
Air consumption | 9~14m3/min |
Propelling beam pitch angle | Up19°, Down110° |
Propelling the beam swing angle | Right5°, Left90°(or Right90°Left5°) |
Drill boom pitch angle | Up50°, Down23° |
Drill boom swing angle | Right40°,Left40° |
Diesel tank volume | 85L |
Hydraulic oil tank volume | 188L |
Power Configuration | YCD4R22T-80(Yuchai)/Electric motor 55KW |
Dimensions(transportation state) | 6600L×2110W×2900H(mm) |
Total Weight | 6.3T |
Types of DTH Drilling Rigs
Portable DTH Drilling Rigs
These are lightweight and easy to transport, making them ideal for small-scale projects and applications where mobility is required. People often use them in construction, landscaping, and geotechnical investigations.

Crawler DTH Drilling Rigs
These rigs are mounted on tracks, providing better stability and maneuverability on rough terrain. People commonly use them in mining, quarrying, and large – scale construction projects.


Features of DTH Drilling Machine
- High Efficiency
Leveraging a specialized down-the-hole drilling mechanism, these rigs achieve faster penetration rates than conventional methods, significantly reducing drilling time and enhancing operational productivity. - Superior Hole Quality
The down-the-hole process ensures uniform borehole diameters and smooth walls, delivering precise results critical for applications like pipeline installation, anchor systems, and pile foundations. - Versatility
Equipped with adaptable drilling bits and accessories, DTH rigs excel across diverse geological conditions and project requirements, making them ideal for construction, mining, and exploration industries. - Durability
Built with robust materials and heavy-duty components, these rigs withstand harsh drilling environments, ensuring reliable performance and a prolonged service life even in demanding operations.


Operation Specifications of DTH Drilling Rig
- Before starting the drilling operation, it is essential to conduct a thorough inspection of the rig to ensure that all components are in good working condition.
- The operator should receive training and get familiar with operating the DTH Drilling Rig and following safety procedures.
- When you set up the rig, you must ensure that you level and stabilize it properly to prevent any movement or vibration during the drilling process.
- You should select the drilling bit based on the type of rock or soil you are drilling and the desired hole diameter.
- During the drilling operation, the operator should monitor the drilling parameters such as torque, feed rate, and penetration rate to ensure optimal performance.
- After completing the drilling operation, you should properly clean and maintain the rig to prevent any damage or corrosion.


Maintenance of DTH Drilling Rig
- Regular Inspections: Conduct routine checks on drilling bits, drill pipes, hydraulic systems, and electrical components to identify wear, leaks, or malfunctions, ensuring early detection of potential issues.
- Thorough Cleaning: Keep the rig free of debris, dirt, and accumulated grime to prevent component corrosion and blockages, focusing on hard-to-reach areas like vents and connectors.
- Lubrication: Apply manufacturer-recommended lubricants to all moving parts (joints, gears, hinges) to reduce friction, minimize wear, and maintain smooth operational performance.
- Component Replacement: Immediately swap out worn or damaged parts such as drilling bits, drill pipes, seals, and bearings to avoid cascading damage and ensure drilling efficiency.
- Protective Storage: When you are not using the rig, store it in dry, covered environments to prevent rust and environmental damage. Shield all components from moisture and extreme weather.
- Secure Transportation: During transit, properly secure the rig to prevent movement or vibration, using stabilizers and protective padding to safeguard components and maintain structural integrity.
DTH Drilling Rig Manufacturer YG Machinery
YG Machinery is a leading DTH Drilling Rig manufacturer with years of expertise, offering reliable, efficient, and easy-to-operate rigs for construction, mining, and exploration. Our diverse range includes portable, track-mounted, and truck-mounted models to suit projects of all scales. Backed by skilled engineers, we deliver tailored solutions for small-scale jobs or major projects. Choose YG Machinery for high-quality drilling rigs and excellent service.
WhatsApp/WeChat/Phone: 86 138 3715 9132