An SPT machine is a full hydraulic core drill equipped with dedicated Standard Penetration Test attachments, retaining all original core sampling capabilities while adding in-situ soil property testing functionality. It extracts intact cylindrical rock core samples and performs standardized hammer penetration tests in the same borehole, identifying soil stratification, bearing capacity and density parameters to deliver reliable geological data for engineering design and construction.
YG manufactures four production models: YGX-400, YGX-600, YGX-800 and YGX-1000, covering maximum drilling depths from 500m to 1100m. Each model comes calibrated for different project scales and geological conditions, delivering consistent performance in both hard rock drilling and soft soil testing applications.
SPT Machine 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 |
Applications of YG SPT Machine
- Metallic & Non-Metallic Mineral Exploration: Conducts general survey and detailed exploration of solid mineral deposits. It extracts core samples to identify ore body distribution, grade and thickness, and performs SPT tests on overlying soil layers to assess slope stability and mining safety conditions.
- Engineering Geological Investigation: Carries out site investigation for construction projects. It determines foundation bearing capacity, soil settlement characteristics and seismic liquefaction risk, providing a scientific basis for residential, commercial and industrial building foundation design.
- Hydrogeological Survey: Investigates groundwater resources and aquifer properties. It drills boreholes to map groundwater levels and aquifer distribution and uses SPT data to evaluate soil permeability and groundwater flow characteristics for water supply project planning.
- Oil & Gas Field Exploration: Supports preliminary survey and exploration of oil and gas fields. It drills shallow exploration boreholes to obtain stratigraphic data and performs SPT tests on near-surface formations to assess drilling site stability and foundation conditions for drilling platforms.
How To Select The Right SPT Drilling Machine?
- Drilling Depth Requirement: Match the rig’s maximum drilling depth to your project needs. YGX-400 suits shallow surveys up to 500m, while YGX-1000 handles deep exploration up to 1100m.
- Geological Conditions: For hard rock formations, select models with higher lifting and feeding force. YGX-800 and YGX-1000 SPT machines offer 24-30T lifting force for challenging ground conditions.
- Drilling Angle Needs: If your project requires horizontal or inclined boreholes, choose YGX-400, which supports 0-90° full-angle drilling. Other models cover 45-90° for standard vertical surveys.
- Regional Power Requirements: YGX-400 to YGX-800 use Yuchai engines suitable for most global markets, while YGX-1000 adopts a Cummins engine for heavy-duty operations and regions with strict emission standards.
Differences Between the SPT machine and Core Drilling Rigs
Different Design Purposes
SPT drilling machines are primarily designed to obtain engineering property parameters of soil layers, such as bearing capacity and compactness, providing data support for construction projects and foundation treatment. Core drilling rigs are mainly used to extract intact core samples for detailed analysis of rock formation lithology, structure and composition, which is critical for geological and mineral exploration.
Different Working Principles
SPT drilling machines use hammering force to drive a standard penetration sampler into the soil, judging soil layer density based on the number of hammer blows required to penetrate 30cm. Core drilling rigs drill into rock formations by rotating a diamond bit, using a core barrel to retrieve cylindrical core samples for laboratory analysis.
Different Structures and Functions
SPT drilling rigs have a relatively simple structure, mainly consisting of a drill frame, drill pipe, penetration hammer and conduit, with a single function focused on penetration testing. Core drilling rigs feature a more complex structure with additional rotary mechanisms, core barrels and flushing systems, enabling them to drill cores of different diameters and depths.
Different Application Scopes
SPT drilling rigs are mainly used in construction engineering, foundation treatment and roadbed engineering to determine foundation bearing capacity and soil layer distribution. Core drilling rigs are widely applied in geological surveys, mineral exploration, hydrogeological surveys and engineering geology to obtain core samples for detailed stratigraphic analysis.
FAQ About SPT Machine
A: Inspect the split-spoon sampler and drive shoe after every 50-100 tests. Replace them immediately if you notice bending, excessive wear, or deformation to maintain test accuracy.
A: The rig generates stable test results on sandy soil, silt and mixed backfill layers; dense cobble-rich ground needs an adjusted drilling pace to avoid abnormal blow-count deviations during penetration testing.
A: The built-in dual air and water cooling system lets all models run continuous 8-hour shifts under high-temperature outdoor environments without hydraulic overheating or sudden shutdown.
A: The modular tool layout maintains borehole stability during component swaps, so core specimens remain intact with no extra collapse or cross-contamination from surrounding soil. This SPT rig’s design prioritizes sample quality across all operation modes.
SPT Drill Rig Price
A reliable SPT machine is an essential investment for any geological survey and geotechnical engineering company. YG’s rigs are built with industrial-grade components and proven hydraulic technology to deliver accurate test results and long service life. If you are looking for a high-quality SPT rig and want to get a detailed SPT drill rig price tailored to your project requirements, contact our team today. We will provide professional model recommendations and technical support to help you select the perfect equipment for your business needs.
