An rc drilling rig is a specialized drilling machine widely used in foundation construction, bridge engineering, water conservancy projects, and mining exploration. It adopts reverse circulation technology to remove cuttings efficiently during drilling. Compared with many traditional drilling methods, this technology helps improve drilling efficiency and maintain borehole cleanliness. As infrastructure projects continue to grow worldwide, more contractors choose reverse circulation drilling equipment for demanding construction environments.
Parameter of RC Drilling Rig
Choosing the right drilling solution begins with understanding its technical specifications. The following table shows common parameters of an rc drilling rig.
| 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) |
Actual specifications may vary according to project requirements and machine configurations.
Structure of RC Drilling Rig
1. Power System:The power system provides energy for the entire machine. It usually consists of a diesel engine and hydraulic components. Stable power output helps ensure smooth drilling operations.
2. Rotary Drive System:The rotary drive system transfers torque to the drill pipe and drill bit. Strong torque allows the equipment to drill through different geological formations more effectively.
3. Drill Pipe and Drill Bit System:The drill pipe connects the rotary head and drill bit. Most reverse drilling machine models use double-wall drill pipes, which are essential for creating the reverse circulation channel.
4. Reverse Circulation System:This is the core system of the machine. It includes an air compressor, double-wall drill pipes, and a cuttings collection device. The system transports drilling debris from the bottom of the hole to the surface.
5. Lifting and Feeding System:The mast, winch, and feeding mechanism control drilling depth and drilling pressure. These components contribute to stable and efficient drilling performance.
6. Hydraulic Control System:The hydraulic system controls rotation, lifting, feeding, and machine movement. It improves operational convenience and helps operators work more efficiently.
Working Process of Reverse Rotary Drilling Machine
A reverse rotary drilling machine follows a continuous drilling and cuttings removal process. This method helps maintain borehole cleanliness and supports efficient drilling operations.
1. Site Preparation and Machine Positioning:Before drilling starts, operators position the machine at the designated location and level the equipment. Proper setup helps ensure drilling accuracy and stable performance throughout the project.
2. Drill Bit Starts Drilling:The rotary head drives the drill pipe and drill bit into the ground. As the bit rotates, it breaks soil, gravel, or rock formations. Meanwhile, the feeding system applies suitable pressure to maintain steady penetration.
3. Reverse Circulation Formation:Compressed air enters the space between the inner and outer drill pipes. This creates a pressure difference inside the drilling system. As a result, drilling cuttings are drawn into the drill bit inlet and move upward through the inner pipe.
4. Cuttings Discharge and Collection:The cuttings reach the surface through the drill pipe and enter the collection system. Fast removal of debris keeps the borehole relatively clean and allows operators to observe formation conditions during drilling.
5. Continuous Drilling to Target Depth:Drilling and cuttings removal continue at the same time until the required depth is reached. Operators can adjust drilling parameters according to geological conditions to maintain efficient performance.
6. Borehole Cleaning and Completion:After reaching the target depth, the circulation system continues running briefly to remove remaining debris from the borehole. The drill tools are then withdrawn, and the borehole is prepared for the next construction stage.
This efficient workflow is one reason why this drilling equipment is widely used in deep foundation, bridge, and infrastructure projects. It helps improve drilling efficiency while supporting good borehole quality.
Factors Affecting the Drilling Speed of RC Drilling Rig
1. Geological Conditions:Geological conditions directly influence drilling speed. Soft soil layers generally allow faster penetration, while gravel and hard rock formations often require more drilling time.
2. Drill Bit Quality:A suitable drill bit can improve cutting performance and reduce wear. Proper bit selection helps increase drilling efficiency and lower operating costs.
3. Air Compressor Capacity:The reverse circulation system depends on adequate airflow. A high-capacity compressor helps transport cuttings more effectively and supports continuous drilling operations.
4. Operator Experience:Experienced operators can adjust drilling parameters according to site conditions. Timely adjustments often improve productivity and reduce unnecessary downtime.
5. Equipment Maintenance:Regular maintenance helps keep hydraulic systems, rotary components, and drilling tools in good condition. Well-maintained equipment generally provides more stable performance.
6. Drilling Parameters:Rotary speed, feeding pressure, and air pressure all affect drilling efficiency. Proper parameter settings help balance drilling speed and equipment durability.
Difference Between RC Drilling Rig and Forward Circulation Drilling Rig
1. Circulation Principle:This drilling system transports cuttings through the inner drill pipe using reverse circulation. In contrast, a forward circulation rig carries cuttings upward through the annular space outside the drill pipe.
2. Drilling Efficiency:Reverse circulation drilling often achieves higher efficiency in large-diameter and deep-hole projects because cuttings are removed more quickly.
3. Borehole Cleanliness:The reverse rotary drilling machine generally provides better borehole cleaning performance. Cleaner boreholes help improve construction quality and drilling accuracy.
4. Deep Drilling Capability:For deep foundation projects, rig rc equipment can maintain efficient cuttings transportation over greater drilling depths.
5. Application Scope:Forward circulation drilling remains suitable for many conventional projects. However, reverse circulation drilling is often preferred for large infrastructure, bridge foundation, and deep-hole construction projects.
RC Drilling Rig Manufacturer — YG Machinery
YG Machinery is a professional manufacturer of construction and foundation engineering equipment. We focus on providing reliable drilling solutions for customers around the world.
Our reverse drilling machine products are designed to deliver stable performance, efficient drilling capability, and long service life. From design and manufacturing to testing and delivery, every process follows strict quality control standards.
In addition, YG Machinery offers equipment selection support, technical consultation, installation guidance, operator training, and after-sales service. Whether your project involves bridge construction, water conservancy engineering, mining exploration, or foundation piling, our team can help you choose the most suitable equipment solution.
Besides reverse circulation drilling equipment, we also supply rotary drilling rigs, water well drilling rigs, hydraulic pile drivers, road construction machines, and other engineering equipment. These products can help customers complete various construction projects efficiently while creating opportunities for future equipment expansion and project development.
If you are looking for dependable reverse circulation drilling equipment with competitive pricing and professional support, welcome to contact YG Machinery for detailed specifications and a customized quotation.
