A reverse drilling machine moves cuttings back up through the drill rod. All fluid flows up the center pipe instead of the annulus. This reverse flow keeps deep holes clean during long shifts. Contractors use it for mineral exploration, water wells, and geothermal work. YG Machinery builds five models, from YGL-400 to YGL-1200. The largest reaches 1200 meters, and hole diameter grows to 800 millimeters. Working air pressure reaches 8 MPa on the biggest unit. Each rig pairs a top-drive hydraulic feed with a high-pressure hammer. Penetration rate runs from 10 to 35 meters per hour. The result is fast output in loose soil and hard rock alike.
How do crews decide between air and mud methods? It depends on the ground and the goal. Reverse air flow works best when dry samples matter. It also shines in fractured rock that tends to collapse. The YGL series handles both with one strong package. Larger units add depth reach without slowing the cycle. That makes the line easy to scale from exploration to production. For many buyers, the choice comes down to speed and sample quality. Need shallow capacity first? Our portable water well drilling rig covers quick, small jobs.
YG RC Drilling Rig Technical Parameters
| Parameter | YGL-400 | YGL-500 | YGL-600 | YGL-800 | YGL-1200 |
|---|---|---|---|---|---|
| Maximum drilling depth (m) | 400 | 500 | 600 | 800 | 1200 |
| Hole diameter (mm) | 105-305 | 105-400 | 105-450 | 105-550 | 105-800 |
| Working air pressure (Mpa) | 1.2-3.5 | 1.6-6 | 1.6-6 | 1.6-8 | 1.6-8 |
| Air consumption (m³/min) | 16-55 | 16-55 | 16-75 | 16-96 | 16-96 |
| Drill rod length (m) | 3 | 3 | 3 | 6 | 6 |
| Drill rod diameter (mm) | 89/102 | 102/114 | 102/114 | 114/127 | 127/146 |
| Axial force (T) | 6 | 7 | 7 | 11 | 13 |
| Lifting force (T) | 22 | 25 | 29 | 47 | 57 |
| Fast hoisting speed (m/min) | 20 | 23 | 29 | 29 | 30 |
| Fast advancing speed (m/min) | 32 | 33 | 33 | 42 | 44 |
| Maximum rotation torque (Nm) | 8000/4000 | 10000/5000 | 12000/6000 | 18000/9000 | 24000/12000 |
| Maximum rotation speed (r/min) | 75/150 | 75/150 | 75/150 | 70/140 | 86/172 |
| Auxiliary winch lifting force (T) | 1.5 | 1.5 | 2.5 | 2.5 | 2.5 |
| High outrigger stroke (m) | 1.6 | 1.6 | 1.7 | 1.7 | 1.7 |
| Penetration rate (m/h) | 10-35 | 10-35 | 10-35 | 10-35 | 10-35 |
| Travel speed (km/h) | 2.5 | 2.5 | 3.5 | 5 | 6.4 |
| Gradeability | 21° | 21° | 21° | 21° | 21° |
| Machine weight (T) | 11 | 12 | 12.5 | 17 | 23 |
| Overall dimensions (m) | 7×1.85×2.86 | 7×2.1×2.9 | 7×2.1×2.9 | 10.5×2.25×3.3 | 11.5×2.25×3.4 |
| Engine | Yuchai 92KW | Cummins 132KW | Cummins 132KW | Cummins 194KW | Cummins 264KW |
Get Factory Quote | WhatsApp/Tel: +86 183 3715 2861
Applicable conditions: all models suit loose strata and bedrock. Drilling method: top-drive hydraulic rotary propulsion, down-the-hole hammer, or mud drilling. Matching hammer: medium and high pneumatic pressure series.
How the Reverse Drilling Machine Clears the Hole Faster
The key is the reverse circulation flow path. Compressed air enters the drill string and cools the hammer. It then returns up through the rod center, carrying every cutting. Nothing stays trapped at the bit face. That keeps the hole clean and the bit hitting fresh rock. Fast hoisting speed reaches 30 meters per minute. Fast advancing speed climbs to 44 meters per minute. Maximum rotation torque peaks at 24000 Newton meters. Rotation speed reaches 172 rpm on the YGL-1200. This combination trims cycle time on every single rod change. The top-drive feed also works with a down-the-hole hammer for hard strata. That matches the medium-to-high pressure air range well.
Bit torque and speed adapt to the formation. High torque moves through hard, cemented layers. Higher speed clears softer ground without waste. The operator reads the controls and adjusts on the fly. Auto depth control keeps the string working at target. Air volume stays matched to the hammer for stable energy. This keeps every meter drilled at full design rate. Even steep grades do not slow the unit down. Small buried obstacles do not stall the feed, either.
Rod change speed also matters on deep holes. Shorter feed cycles add up over hundreds of meters. The YGL line balances torque, speed, and air for steady work. Crews can hold high output across a full shift. Less operator fatigue means fewer mistakes late in the day. Those small wins deliver real footage by month-end.
Why a Reverse Drilling Machine Earns Its Keep
Reliability is what this unit delivers on site. It fits loose soil and hard bedrock with equal ease. That flexibility suits crews who switch job types often. Here is what owners gain across the whole line:
- Lower cost per meter from stable, high penetration.
- Less downtime caused by stuck pipe and blocked bits.
- Cleaner cuttings discharge that is simple to manage.
- One rig covers test bores and full production wells.
- Yuchai and Cummins engines keep running hours high.
Fast hoisting and advancing shorten every non-drilling step. A small auxiliary winch handles tooling up to 2.5 tons. A high outrigger stroke of 1.7 meters levels the machine. The workflow stays simple even on rough ground. Axial force rises from 6 to 13 tons across the range. That keeps steady pressure against the bit in changing ground.
Managers also track fuel and maintenance in daily accounts. Reverse circulation often lowers diesel use per meter. Fewer stalled strings mean fewer costly rescue jobs. The control cab gives a clear view of the whole cycle. Sensors show torque, feed, and airflow at a glance. This data helps operators avoid trouble before it starts. Lower blade wear extends part life on every job. The gains compound across a full working season.
Where a Mineral Exploration Drilling Rig Goes Deep
Mineral exploration drilling rig demand grows with deep, hard targets. Modern holes often reach several hundred meters into bedrock. A mineral exploration drilling rig must keep samples clean and recovery high. Reverse circulation is ideal for this kind of work. The dry air-return method keeps formation samples free of mud. This gives geologists clearer assays from every drilled meter. Consider one example in northern Chile. A copper exploration crew ran a YGL-800 on a porphyry target. They drilled multiple angled holes through fractured rock. Reverse circulation kept penetration steady at depth. Sample recovery stayed high even in weathered zones. The crew finished the program ahead of schedule. Field records consistently show this pattern on similar projects.
Why does dry sampling matter for assays? Wet mud can wash away fine minerals. Reverse air flow keeps the original rock intact. Uranium and copper programs often demand this clean method. Water-stressed sites also avoid hauling large mud volumes. The YGL-600 handles mid-depth targets with lower fuel burn. The YGL-1200 reaches the deepest structures. Each size keeps sample integrity across the full hole. That is the result geologists trust most on modern programs.
Exploration budgets reward reliable footage every season. A steady rig keeps assay dates on schedule. Delays often push whole programs into another drilling year. Good sample handling starts at the rig itself. The reverse flow separates cuttings cleanly by depth. Field geologists log each meter with real confidence. That reduces re-drilling and laboratory rework. Owners then see lower program cost and earlier decisions. For steep, hard-rock sampling, some crews pair this unit with a diamond core drilling rig.
RC Drilling Rig Price: What a Fair Budget Looks Like
A fair RC drilling rig price depends on the package, not just the sticker. Larger depth and hole size raise the base cost. Engine choice is one major driver. Yuchai units power the 92 KW entry models. Cummins engines serve the 132 to 264 KW range. Machine weight runs from 11 to 23 tons. Higher travel speed suits remote, multi-site fleets. You also pay for options, spares, and training. Key selection factors include:
- Maximum depth and diameter needed right now.
- Air compressor capacity for hammer pressure.
- Road and transport limits for your region.
- Spare part availability near your site.
Get a clear quote before you compare suppliers. We publish reverse circulation drilling rig for sale details with full specifications. Ask us for a tailored RC drilling rig price list for your project.
Financing and delivery also shape your final budget. We help buyers plan transport and customs documents. Rail or road logistics depend on the rig weight and size. Port access near your site cuts the last-mile cost. Spare kits can be bundled with the first order. That reduces downtime in the critical early weeks. Budget for operator training in the first month. A clear plan prevents surprise costs before you start. Compare this line with a crawler drilling rig when fast relocation tops your list.
Service and Spare Parts Behind Your Reverse Drilling Machine
Support matters as much as the machine itself. YG Machinery backs every drilling unit from the first inquiry. We review your site and suggest the right model. We confirm the air package matches your compressor. Then we plan transport and delivery to your country. After arrival, we supply operator training. We keep spare parts and technical guidance ready. Regular service notes keep penetration at full output. A stable support line reduces unplanned downtime. This is how you protect a long-lived capital asset. The result is more productive drilling days every month.
Our engineers help you commission the unit on arrival. They check air lines, torque settings, and safety locks. Remote support answers fast when a fault appears. We keep a digital record of every maintenance step. That makes warranty claims quick and simple. Spare parts ship from central stock to most regions. Local partners extend service where we have no branch. This backing protects your uptime and your investment.
Order Your Reverse Drilling Machine Today
Ready to move past slow, plug-prone equipment? Contact YG Machinery for a free quote. Tell us your target depth, hole size, and site condition. We recommend the exact model in the YGL range. We provide pricing, lead time, and shipping options. You can customize the machine to fit your existing fleet. Get a tailored solution that matches your contract budget. Send us your inquiry and start drilling faster.
We answer every inquiry with technical details, not just a price. You receive a model recommendation and a delivery timeline. Our team stays with you through setup and early use. That reduces risk on your first deep bore. Reach us by email or the form on our site. Add your project size so we can quote accurately. The faster you ask, the sooner you hit production. Request your free quote today.
