A reverse circulation drilling machine is a multi-functional industrial drilling platform that redefines efficiency and accuracy across a wide range of earth-moving and exploration applications. Far beyond just water well drilling, it has become the industry standard for projects that demand both fast hole formation and reliable geological data. Its unique closed-loop circulation system solves the most persistent problems of traditional drilling methods: sample contamination, frequent hole collapse, slow cuttings removal, and excessive environmental impact. This technology excels at two critical tasks that traditional rigs struggle to combine effectively: creating stable, uniform boreholes and delivering uncontaminated, depth-accurate rock samples. This dual capability makes it indispensable for mineral exploration, mine grade control, geotechnical site investigation, foundation engineering, and environmental monitoring. Unlike conventional drilling that mixes cuttings from different layers as they rise to the surface, it transports samples through a sealed inner tube, preserving their exact geological context.
YG builds rugged, field-proven RC drill rigs designed to withstand the harshest job site conditions. Our reverse circulation drilling machine combines powerful performance with user-friendly operation, allowing contractors to take on more diverse projects and deliver better results in less time.
Reverse Circulation Drilling Machine Parameter:
| Model | YG150RC | |
| Drill rig weight(crawler mounted) | kg | 9000 |
| Engine Power | kW | 125 |
| Length × Width × Height (normal) | mm | 6750x2200x2950 |
| Ambient Temperature Range | °C | -10～38 |
| Drill Ability | ||
| Nominal Drill Depth | m | 150 |
| End-hole Diameter | mm | 110-250 |
| Drill angle | ° | -10-90 |
| Horizontal hole height | m | 1.85-2.8 |
| Drill head output | ||
| Max Output Torque | N.m | 8000 |
| Output Rotation Speed(continuity) | rpm | 30 / 60, 54/108rpm |
| Output Rotation Speed(interval) | rpm | 62 / 124105/210rpm |
| Feeding | mm | 3500 |
| Thrust Force | kN | 45 |
| Lifting Capacity | kN | 65 |
| Pipe-puller Device Output | ||
| Output Rotation Speed | rpm | 40 |
| Max Output Torque | N.m | 30000 |
| Hole-through Diameter | mm | 370 |
| Auxiliary Winch | ||
| Pull Force of the First Layer | kN | 11 |
| Rope Diameter | mm | 14 |
| Rope Capacity | m | 60 |
| Engine(Cummins) | 6BTA5.9-C125 | |
| Power | kW | 125 |
| Rotary Speed (Max.) | rpm | 2200 |
| Track Chassis Base | ||
| Walk Speed | Km/h | 1.2 |
| Unit Pressure | MPa | ＜0.05 |
| Climb Ability | ° | Drill rig weight(crawler-mounted) |
Why Reverse Circulation Is Replacing Traditional Drilling Methods?
The shift to reverse circulation technology is not just a trend—it is a response to the fundamental limitations of positive circulation drilling that have plagued the industry for generations.
- Traditional positive circulation pushes drilling fluid down the center of the drill pipe and brings cuttings back up through the annular space between the pipe and the hole wall. This works well in hard rock but fails miserably in loose, sandy, or gravelly formations. The high-velocity fluid erodes the hole walls, causing frequent collapses that can trap drill pipes and lead to costly project delays. In contrast, reverse circulation pulls cuttings up through the center of the drill pipe, keeping the hole walls stable and reducing collapse risk by 80%.
- This difference translates directly to faster project completion. On average, an RC drilling machine completes projects 2-3 times faster than a comparable positive circulation rig in mixed geology. For a typical 100m water well, this means finishing in 1-2 days instead of 3-5 days. Faster completion means you can take on more projects per year and significantly increase your revenue.
- Another critical advantage is improved hole quality. Reverse circulation produces a straight, uniform hole with a consistent diameter, which is essential for proper casing installation and long-term well performance. It also eliminates the need for repeated reaming, further reducing project time and costs.
Optimizing Performance For Different Geological Conditions
Getting the most out of your drilling equipment requires adjusting your operating parameters to match the specific geology of each job site. Here are proven guidelines based on thousands of hours of field operation:
- For soft soil and clay formations: Use lower rotation speeds (30-60 rpm) and moderate thrust force (20-30 kN). This prevents the drill bit from becoming clogged with sticky clay and ensures efficient cuttings removal. The reverse circulation system excels in these conditions, delivering the fastest drilling speeds.
- For sand and gravel formations: Use higher rotation speeds (60-108 rpm) and higher thrust force (30-45 kN). The closed-loop circulation system prevents sand from settling at the bottom of the hole, which is the most common cause of stuck drill pipes in these formations.
- For medium-hard rock formations: Use the highest rotation speeds (108-210 rpm) and maximum thrust force. The 8000 N·m torque output provides more than enough power to break through most sedimentary and igneous rocks. For harder rock, consider using a tungsten carbide drill bit for improved performance.
- For angled drilling projects: The machine’s drill angle range of -10° to 90° allows you to handle almost any angled drilling requirement. When drilling at angles greater than 45°, reduce the thrust force by 20-30% to prevent excessive wear on the drill pipe.
Core Advantages of Reverse Circulation Drilling Machine
- Industrial-grade Cummins power system: The RC drill rig is equipped with a genuine 6BTA5.9-C125 diesel engine delivering 125kW of power at 2200rpm. This globally recognized engine provides consistent performance under heavy load, with proven reliability in extreme environments and easy access to replacement parts worldwide.
- Heavy-duty crawler chassis: The 9000kg crawler-mounted design features a low ground pressure of less than 0.05MPa, allowing it to operate on soft soil, muddy fields, and uneven terrain without sinking. It has a walking speed of 1.2km/h and strong climbing ability, making it easy to move between drilling positions on large job sites.
- Optimized drilling power train: Delivers 8000N·m maximum output torque and 45kN thrust force, with adjustable rotation speeds from 30rpm to 210rpm. This wide range of settings allows you to fine-tune performance for different geological conditions, from soft clay to medium-hard rock.
- High-capacity pipe handling system: Features a 65kN lifting capacity and a dedicated pipe-puller device with 30000N·m maximum torque and 370mm hole-through diameter. This system allows one operator to safely and quickly install and remove drill pipes, reducing cycle time between holes by 30%.
- All-weather operation capability: The RC drilling machine is designed to operate reliably in ambient temperatures from -10℃ to 38℃, allowing you to work year-round in most climate zones. The engine features cold-start technology for winter operation and an efficient cooling system for hot summer days.
- Compact footprint for tight spaces: The overall dimensions of 6750mm × 2200mm × 2950mm allow it to fit through narrow access roads and operate in confined urban areas, residential backyards, and mountainous regions where larger rigs cannot reach.
Reverse Circulation Drilling Rig For Sale – YG Machinery
A high-quality reverse circulation drilling machine is more than just a piece of equipment—it is a tool that can transform your business. It allows you to complete projects faster, reduce costs, and take on jobs that were previously impossible with traditional drilling methods. If you are looking for a reliable reverse circulation drilling rig for sale that will deliver a fast return on investment, contact us today to discuss your specific requirements and receive a detailed quote.
