A reverse circulation drilling machine uses compressed air for drilling. Rock chips return through the drill rod center, so samples stay cleaner.
RC drilling is usually 2-3 times faster than traditional core drilling. This matters in large mining exploration projects.
YG Machinery builds a fully hydraulic reverse circulation drilling rig. Mast lifting, feeding, rotation, and walking all use hydraulic control.
📍 Tip: In gold exploration, sample contamination can ruin lab results. RC drilling reduces that risk.
Reverse Circulation Drilling Machine Parameter
| Technical Parameters | unit | YG-400 | YG-500 | YG-600 | YG-800 | YG-1200 |
| Maximum drilling depth | M | 300 | 400 | 500 | 600 | 1000 |
| Drilling diameter | mm | 105-305 | 105-400 | 105-450 | 105-550 | 105-800 |
| Recommended working air pressure | Mpa | 1.2-3.5 | 1.6-6 | 1.6-6 | 1.6-8 | 1.6-8 |
| Recommended gas consumption | m³/min | 16-55 | 16-55 | 16-75 | 16-96 | 16-96 |
| Drill pipe length | m | 3 | 3 | 3 | 6 | 6 |
| Recommended drill pipe diameter | mm | 89/102 | 102/114 | 102/114 | 114/127 | 127/146 |
| Recommended diameter for air reverse circulation double-walled drill pipe | mm | 89/102 | 102/114 | 102/114 | 114/127 | 127/146 |
| Axial pressure | T | 6 | 7 | 7 | 11 | 13 |
| Lifting force | T | 22 | 25 | 29 | 47 | 57 |
| Rapid ascent speed | m/min | 20 | 23 | 29 | 29 | 30 |
| Fast forward speed | m/min | 32 | 33 | 33 | 42 | 44 |
| Maximum rotational torque | Nm | 8000/4000 | 10000/5000 | 12000/6000 | 18000/9000 | 24000/12000 |
| Maximum rotational speed | r/min | 75/150 | 75/150 | 75/150 | 70/140 | 86/172 |
| Small auxiliary hoisting force | T | 1.5 | 1.5 | 2.5 | 2.5 | 2.5 |
| Drilling efficiency | m/h | 10-35 | 10-35 | 10-35 | 10-35 | 10-35 |
| Walking speed | Km/h | 2.5 | 2.5 | 3.5 | 5 | 6.4 |
| External dimensions | m | 6.2*1.85*2.8 | 7*2.1*2.8 | 7*2.1*2.8 | 10.5.*2.25*3.3 | 11.5*2.25*3.4 |
| Adaptation conditions | Loose layers and bedrock | |||||
| Drilling method | Top-drive hydraulic rotation and propulsion, down-the-hole hammer drilling or mud drilling. | |||||
| Optional accessories | Mud pumps, centrifugal pumps, generators, foam pumps | |||||
Why Is a Reverse Circulation Drilling Machine Better for Mining?
RC drilling delivers stable sample quality. Compressed air moves rock chips directly into the sample collector, so cross-contamination stays low.
Many gold and copper projects need accurate lab data. Even small errors can affect mining decisions.
YG Machinery reverse circulation drilling equipment uses both a cyclone separator and a dust collection system. Dust stays controlled during operation.
The air pre-filter removes more than 90% of intake dust. Engine wear becomes much lower.
How Does a Reverse Circulation Drilling Machine Increase Efficiency?
Traditional core drilling needs frequent rod lifting. RC drilling removes chips continuously, so penetration rates stay higher.
In hard rock formations, a reverse circulation drilling rig can work more than twice as fast as a hydraulic core rig.
YG Machinery uses a compensation sliding plate system. It protects drill rod threads and extends rod service life.
Hydraulic wrenches and rod handlers also reduce manual labor. Crews work faster.
Key Parts of a Reverse Circulation Drilling Machine
Hydraulic Drilling System
A stable hydraulic system improves drilling accuracy. YG Machinery uses full hydraulic control for smoother operation.
The mast compensation cylinder increases mast rigidity. The rig stays stable on uneven ground.
Dust Collection and Sample System
Environmental rules are stricter today. This is especially true in Australia, Chile, and South Africa.
YG Machinery reverse circulation drilling equipment includes a high-efficiency dust collection system. Rock dust gets collected before spreading.
For geological analysis, samples can also pass through a cyclone separator for cleaner storage.
Drill Rod and Centering Structure
Hole accuracy affects blasting and ore body analysis.
YG Machinery uses a special centering device with a level indicator. Hole positioning becomes more accurate.
📍 Tip: Older rigs often ignore centering systems. Hole deviation becomes a serious problem later.
Wide Applications of Reverse Circulation Drilling Machine
Gold and Copper Exploration
RC drilling is one of the most common methods in gold exploration. It provides fast and reliable rock sample collection.
In African mining projects, a reverse circulation drilling machine often drills holes from 100 to 500 meters.
Water Wells and Deep-Hole Projects
Many buyers think RC rigs only work in mining. That is not true.
A reverse circulation drilling rig also works well for deep water wells, geothermal wells, and foundation drilling.
Geological Surveys and Resource Evaluation
Geological teams need large amounts of powder samples for analysis.
RC drilling supports continuous sampling, which helps large resource evaluation projects.
Customer Cases From Australia and Chile
In 2024, an Australian customer named David searched for an rc drill rig for sale for a gold exploration project in Western Australia.
His old rig created heavy dust and damaged drill rods too often. Sample contamination also caused lab issues.
After using a YG Machinery reverse circulation drilling machine, drilling efficiency increased by around 40%. Sample repeatability also improved.
Another customer from Chile, Carlos, worked on deep copper drilling projects. The high altitude and dry air caused engine intake problems on older rigs.
YG Machinery used an air pre-filter system that removed over 90% of dust. Continuous operating time increased by more than 30%.
Reverse Circulation Drilling Machine Frequently Asked Questions
Yes. RC drilling depends on compressed air circulation, so an air compressor is required.
Core drilling collects solid rock cores. RC drilling collects powder and chip samples. However, RC drilling is faster and cheaper for many mining exploration projects.
It works well in hard rock, gravel layers, and mixed formations. RC drilling also removes cuttings more efficiently in deep-hole drilling.
Why Do More Buyers Choose YG Machinery?
In today’s market, buyers look beyond price. They want lower long-term operating costs.
YG Machinery reverse circulation drilling machine focuses on stability, sample quality, and maintenance efficiency. Many users report stable operation even in heavy dust conditions.
Our rigs already work in Kazakhstan, Chile, Peru, South Africa, Ghana, and the UAE.
If you need a reliable rc drill rig for sale, YG Machinery can provide a practical drilling solution.
