SPT rig is a specialized drilling and testing machine designed for geotechnical investigation and soil exploration projects. It is mainly used to perform the Standard Penetration Test (SPT), which helps engineers understand soil strength, density, and bearing capacity before construction begins. A high-quality SPT drilling machine provides accurate data that supports safe and efficient foundation design for buildings, bridges, highways, railways, and other infrastructure projects. Modern rigs are built with strong steel structures, advanced hydraulic systems, and user-friendly controls to improve working efficiency in different ground conditions. Whether operating in urban construction sites or remote geological survey areas, an SPT drilling rig can deliver reliable performance and consistent testing results. Its compact design, powerful drilling capability, and stable operation make it an essential tool for contractors, engineering companies, and geotechnical investigation teams worldwide.
Technical Data of SPT Rigs for Sale
| 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 |
Auto SPT Specifications
| Overall weight | 280kg |
| SPT Hammer Weight | 63.5kg |
| SPT hammer stroke | 76cm |
| Operating frequency | 30-50/minute |
| Components of the Auto SPT | Device lifting and alignment rod |
| Standard Penetration Test Hammer Alignment Rod | |
| Lift cylinder | |
| Rotary motor (back) | |
| Safety Guard | |
| Standard Penetration Test Hammer | |
| Drill Rod Alignment Hole |
SPT Drilling Rig Delivers Reliable Performance for Soil Investigation
The SPT rig is designed with a variety of features that improve drilling accuracy, operational safety, and overall productivity. One important feature is its hydraulic control system, which allows operators to manage drilling and testing processes smoothly and efficiently.
The equipment is also equipped with a robust mast structure that ensures stability during operation, even when working in challenging soil conditions. Many models offer adjustable drilling speeds and multiple drilling methods to meet different project requirements.
Another valuable feature is the compact and mobile design, making transportation between job sites easier and reducing setup time. Safety mechanisms such as emergency stop functions, protective guards, and stable support systems help protect operators during use.
In addition, modern SPT drilling machine models often include durable components that resist wear and corrosion, reducing maintenance costs and extending service life. These features make the equipment highly suitable for long-term and demanding geotechnical investigation projects.
How Does an SPT Drilling Machine Work During Soil Testing?
The working principle of an SPT rig is relatively simple but highly effective. First, the rig drills a borehole to the required testing depth. Once the target depth is reached, a standard split-spoon sampler is placed at the bottom of the borehole. A hammer with a specified weight is then repeatedly dropped from a standard height to drive the sampler into the soil. The number of hammer blows required to penetrate a certain depth is recorded and used to determine the soil’s resistance. This information helps engineers evaluate soil strength, density, and suitability for construction. Throughout the testing process, the SPT rig maintains stability and ensures accurate measurement conditions. The drilling system, lifting mechanism, and hydraulic controls work together to provide efficient operation. By collecting reliable subsurface data, the equipment helps engineers make informed decisions regarding foundation design and construction planning.
Applications Across Construction and Geotechnical Engineering Projects
The SPT rig is widely used in many industries where understanding underground soil conditions is critical.
In building construction projects, it helps engineers assess foundation requirements and identify potential ground stability issues.
Highway and railway projects use SPT testing data to ensure that roads and tracks are built on stable ground.
In bridge construction, soil investigation performed by an SPT rig provides essential information for designing strong support structures.
The equipment is also commonly used in dam construction, airport development, port engineering, and municipal infrastructure projects.
Environmental investigation companies use it to collect soil samples and evaluate subsurface conditions for remediation projects.
Mining operations and energy development projects also benefit from accurate geotechnical data obtained through SPT testing.
Advantages of Choosing a High-Quality SPT Drilling Rig
Investing in a high-quality SPT rig offers numerous advantages for construction and geotechnical professionals. One major benefit is improved testing accuracy, which helps reduce uncertainties during project planning and design.Reliable data can prevent costly foundation problems and reduce construction risks.
Another advantage is increased operational efficiency, as advanced hydraulic systems and optimized drilling mechanisms allow faster project completion. The equipment’s durable construction minimizes downtime and maintenance requirements, resulting in lower operating costs over time.
SPT rig can also adapt to various geological conditions, providing flexibility for different projects and locations. Enhanced safety features help protect operators and improve workplace safety standards.
Additionally, compact designs make transportation and site setup easier, saving valuable time and resources. These advantages contribute to better project outcomes, higher productivity, and greater confidence in geotechnical investigation results.
Explore More Drilling Equipment and Contact Us Today
In addition to the SPT rig, we offer a wide range of drilling and geotechnical investigation equipment to support different project requirements. Our product portfolio includes water well drilling rigs, core drilling rigs, rotary drilling rigs, geological exploration rigs, anchor drilling rigs, and various drilling tools and accessories. Each product is designed to deliver high performance, reliability, and ease of operation in demanding working environments. Whether you are planning a small site investigation or a large-scale infrastructure project, our team can recommend the most suitable equipment solution for your needs. We are dedicated to helping customers improve project efficiency and achieve successful outcomes. Contact us today to find a proper solution for your projects.
