A core drill rig extracts intact cylindrical rock samples from underground to analyze geological composition, mineral reserves and groundwater conditions. Among all standard wireline core sizes, PQ is the largest common diameter at 4.75 inches, producing 85mm diameter core samples that deliver the most detailed and reliable geological data. A PQ core sample drill rig is specifically engineered to handle the higher torque and lifting force required for this large-diameter coring operation. YG offers four robust models (YGX-400, YGX-600, YGX-800, YGX-1000) designed for professional core drilling applications. All models feature full hydraulic transmission and wireline coring technology, ensuring stable performance even in tough geological conditions. They support BQ, NQ, HQ and PQ drill rod sizes, giving you the flexibility to switch between different core diameters based on project requirements.
PQ Core Sample Drill Rig Parameter:
| Model | YGX-400 | YGX-600 | YGX-800 | YGX-1000 |
| Drilling Depth(M) | 180-400-500 | 200-600-650 | 400-800-1000 | 500-1000-1100 |
| Rated pressure(MPA) | 21 | 21 | 25 | 28 |
| Rated Flow(L/min) | 168 | 192 | 260 | 300 |
| Heat Dissipation Mode | Air cooling+water cooling | |||
| Engine Brand | Yuchai | Yuchai | Yuchai | Cummins |
| Rated power/speed | 78kW/ 2400r/min | 92kW/ 2400r/min | 92kW/ 2400r/min | 154kW/2400r/min |
| Drilling Angle(°) | 0-90 | 45-90 | 45-90 | 45-90 |
| Lifting Force(T) | 12 | 16 | 24 | 30 |
| Feed Force(T) | 6 | 8 | 12 | 15 |
| Hydraulic Mud pump flow | 30-90（L/min） | 30-90（L/min） | 90-180（L/min） | 90-180（L/min） |
| Hydraulic Mud pump power | 4-7(MPA) | 4-7(MPA) | 4-7(MPA) | 4-7(MPA) |
| Dimension | 4000*1900*1800mm | 4000*2000*1800mm | 5500*2100*2000mm | 6000*2200*2400mm |
| Weight | 4.3T | 4.5/5.5T | 6.5T | 7.5T |
Common Wireline Coring Tool Specifications
| Specifications | Drill hole diameter | drill pipe diameter | core diameter | typical drilling depth |
| PQ | 122.6mm | 114.3mm | 85mm | 300-500m |
| HQ | 96mm | 89mm | 63.5mm | 500-800m |
| NQ | 75.5mm | 71mm | 47.6mm | 700-1000m |
| BQ | 60mm | 55.6mm | 36.5mm | 800-1200m |
What Projects Are Suitable for PQ Drilling Rigs?
PQ coring stands out from BQ, NQ and HQ specifications thanks to its oversized 85mm core specimen, making it indispensable for high-investment, high-precision exploration works where small core samples cannot deliver credible geological data.
- Large-scale mineral prospecting for mining: For precious metal, non-ferrous and industrial mineral deposit verification, developers rely on PQ cores to calculate ore grade and reserve volume accurately. Bigger core sections minimize sampling errors caused by uneven mineral distribution, helping investors avoid wrong investment judgments, so a core drilling machine for mining prioritizes PQ-compatible setups for major deposit appraisal.
- Regional hydrogeological assessment: When mapping aquifer distribution and testing underground water permeability for regional water resource planning, PQ samples retain complete pore and fracture structures inside rock layers. Geologists acquire precise hydrological parameters unavailable from smaller-diameter cores.
- Major infrastructure geotechnical investigation: Dams, cross-river bridges and large industrial plant foundations need thorough bedrock strength detection. PQ core keeps full rock integrity to judge anti-pressure and anti-sliding performance of underlying strata, ruling out hidden geological hazards ahead of construction.
- Academic geological research & resource survey: Universities and geological institutions use PQ core to analyze stratigraphic evolution and mineral formation rules; complete thick core specimens support multiple rounds of physical and chemical testing without exhausting sample materials.
6 Features of PQ Core Sample Drill Rig
- Integrated tower-machine design: Eliminates the need for separate drilling towers, enabling fast hole relocation and reducing setup time by 50%.
- Remote-controlled crawler chassis: Navigates rough, uneven terrain safely without requiring operators to walk in dangerous areas.
- Telescopic mast structure: No foundation work required, allowing you to start drilling within 2 hours of arriving on site.
- Top-drive power head with long stroke guide rail: Eliminates frequent rod changing, improves drilling straightness and reduces operator fatigue.
- Dual air-water cooling system: Maintains optimal operating temperature even in extremely hot climates, preventing overheating during continuous operation.
- Integrated hydraulic mud pump: Delivers consistent flushing flow to keep the borehole clean and maximize core recovery.
FAQ About PQ Core Sample Drill Rig
A: The YGX-1000 can drill up to 500m with PQ drill rods, while the YGX-800 reaches 400m. For deeper projects, you can switch to HQ or NQ sizes to reach 1000-1100m.
A: All models support BQ, NQ, HQ and PQ standard wireline drill rods, giving you complete flexibility for different project requirements.
A: With proper operation and the thin-wall diamond bit technology, you can expect 95%+ core recovery in most rock formations.
A: It suits diverse hard and medium-hard rock layers including granite, basalt, sandstone and shale. Equipped with thin-wall diamond composite drill bits, the rig gains outstanding abrasion resistance against abrasive bedrock. Its full hydraulic power configuration delivers steady torque output to tackle varied formation hardness and satisfy PQ coring across multiple geological environments.
A: We deliver systematic on-site or video-based operational training for all purchased rig units to help your operators master PQ, HQ, NQ, BQ switch, and daily machine adjustment quickly. Meanwhile, we arrange continuous technical guidance and spare parts supply.
Core Drilling Machine Price-Factory Direct Price
A reliable PQ core sample drill rig is an essential investment for any serious mining or geological exploration company. YG’s hydraulic core drilling rigs are built with high-quality components to deliver consistent performance and long service life in the toughest field conditions. If you are looking for a durable, high-efficiency core drilling machine for mining that can handle PQ coring requirements, contact us today. Our team will evaluate your project needs and provide a transparent core drilling machine price with no hidden costs.
