

A down the hole drilling rig is a reliable solution tailored for efficient medium-to-deep hole drilling. Its compact structure allows it to perform well in tight operating spaces, while the easy-to-use controls minimize the complexity of operator training. Equipped with high-performance down the hole hammers, this rig excels in hard rock, with excellent drilling speed. Featuring a modular design, the rig’s components can be quickly disassembled and transported, greatly improving equipment utilization and project response time. Whether you are working on blasting holes in open-pit mining, quarrying, or infrastructure construction, this rig will enhance your single-shift operational efficiency and control overall operational costs. Choosing this rig means boosting your productivity and improving your bottom line.
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 |
Working Process of Dth Drilling Machines
This drilling rig is a compound-powered machine that combines electric and compressed air energy. The power for rotating the drill bit comes from the electric motor, while the impact force for the hammer is generated by compressed air. The electric motor converts electrical energy into rotational torque, which is transmitted to the reducer, causing the drill rod connected to the output shaft of the reducer to rotate. The alloy teeth at the front of the hammer repeatedly impact and break the rock, with debris being expelled through exhaust holes, while the axial force from the drive cylinder pushes the drill bit into the rock.
6 Features of Down the Hole Drilling Rigs
- Compact Structure: The rig’s layout is precisely optimized, integrating power, control, and walking systems in a limited space. This allows it to easily navigate narrow mine steps and complex terrain, significantly enhancing its worksite adaptability.
- Easy to Operate: With a user-friendly control platform and intuitive hydraulic pilot control system, the rig is simple to operate, drastically reducing training time and operator fatigue, helping you quickly start productive work.
- Fast Drilling Speed: Equipped with high-performance down the hole hammers and an optimized hydraulic system, it ensures efficient impact energy and drilling speed across various rock layers, significantly reducing drilling time and improving mining efficiency.
- High Efficiency: The combination of fast drilling speeds and a highly efficient dust extraction and debris removal system minimizes auxiliary operation time, maximizing machine time and production effectiveness.
- Modular Design for Easy Disassembly: The rig’s main components, such as the mast, power station, and cab, can be easily disassembled and reassembled, making it easy to transport by standard road vehicles, ideal for transferring between multiple mining sites or entering remote areas.
- Convenient Transportation: Thanks to its modular design, the rig can be moved without the need for heavy-duty trailers or complex disassembly. Standard trucks can be used for transportation, reducing logistics costs and time, and improving project response speed.


4 Applications of Down the Hole Drilling Rigs
- Open-pit Mining: It is primarily used for drilling blast holes in medium-sized open-pit coal mines and metal mines, such as iron and copper mines.
- Quarries and Aggregate Production: This rig is used for drilling blast holes in quarries for rock loosening and crushing, including for construction stone and limestone.
- Infrastructure Projects: The rig is essential for drilling pre-split blast holes for highway and railway construction, as well as for foundation treatment in large building projects.
- Hydrological and Monitoring Drilling: It is used for drilling shallow hydrological observation wells, groundwater pumping wells, or environmental monitoring holes, generally with depths of up to 30 meters.
- Small Tunnel and Shaft Drilling: It can be used for initial blasting hole drilling for small mine shafts or tunnel construction.
6 Reasons to Choose Dth Borewell Machines
- Earn More Quickly: The compact design and fast moving capability reduce non-operating wait times. The fast drilling speed directly increases daily drilling footage, helping you complete projects faster, take on more jobs, and increase your income.
- Lower Investment Costs: The easy-to-operate design reduces the need for skilled operators and labor costs. The modular structure and convenient transportation reduce the costs and time for transferring equipment, ensuring that your investment is used more efficiently.
- Easier Work: The ergonomic design makes operation easier, lowering operator fatigue and training difficulties, which leads to more stable personnel and less management stress.
- More Opportunities: The compact design and excellent site adaptability enable you to work on narrow, dispersed, or complex terrain where larger equipment cannot reach, giving you a unique advantage in tenders and expanding your business.
- Lower Risk: With reliable performance and stable efficiency, this rig helps you control project timelines and costs more accurately, reducing risks of delays or fines, and protecting your commercial reputation.
- Higher Resale Value: The robust and well-regarded equipment maintains its value in the second-hand market. When upgrading to newer equipment, this rig can provide you with more funds, making your investment more secure in the long term.


5 FAQs about YG Down the Hole Drilling Rig
We offer electric-hydraulic, all-electric, and fully pneumatic versions. You can also add crawler tracks if needed.
The electric-hydraulic version includes a drill rod, motor, hammer, and drill bit; the pneumatic version includes a drill rod, hammer, and drill bit.
Yes, with the addition of an air compressor, it can drill soil layers, using auger drill rods.
No, for soil layers, auger drill rods and three-winged alloy drill bits are used. For rock drilling, round steel drill rods, hammers, and alloy drill bits are used.
Typically, the rig is packaged in wooden crates, and shipping costs are the buyer’s responsibility.

