CBR Soil Bearing Ratio Tester Factory Reliable China Suppliers
Get high-precision CBR Soil Bearing Ratio Testers from a leading China factory. Our professional suppliers provide reliable equipment for geotechnical quality assessment and pavement design, ensuring stable operation and accurate load-bearing capacity results.
The Soil Bearing Ratio Tester (CBR) is a professional-grade laboratory instrument engineered for the precise evaluation of the California Bearing Ratio of highway sub-bases and subgrades. Specifically designed for cohesive materials with maximum particle sizes under 19 mm (3/4”), this system ensures critical structural integrity assessments for civil engineering and road construction projects.
Combining a robust two-column frame with high-precision loading mechanisms, the tester applies a constant penetration rate to measure the load-deformation relationship. Whether following ASTM, EN, AASHTO, or BS/NF standards, this machine provides the reliability and accuracy required for rigorous geotechnical laboratory testing.
Detailed Parameters
| Loading Speed | 1.27 mm/min (ASTM/EN/AASHTO/BS/NF) | Frame Capacity | 50 kN |
|---|---|---|---|
| Max Pressure | 3 T (Model CBR-I) | Penetration Rod | Φ50mm end face diameter |
| Dial Indicators | 0-10mm (2 pieces) | Loading Plates | 4 pieces (Φ150mm Outer / Φ52mm Inner) |
| Test Tube Dim. | Φ152mm x 170mm height | Power Supply | 380V |
| Gross Weight | 86kg (Net: 73kg) | Dimensions | 57 x 43 x 100 cm |
Key Advantages
Robust Construction
Heavy-duty two-column frame with an adjustable upper cross beam ensures stability under high pressure.
Constant Rate Loading
Precision-controlled penetration speed ensures consistency and repeatability across all test samples.
Global Standard Compliance
Fully compatible with ASTM, EN, AASHTO, and BS/NF international testing protocols.
Intuitive Control
Easy-to-use front panel with UP/DOWN buttons for efficient loading and unloading cycles.
High-Precision Reading
Equipped with high-resolution digital dial gauges for pinpoint accurate penetration measurement.
Rapid Re-testing
Adjustable unloading speed of 5 mm/min facilitates quick setup for subsequent test runs.
Product Gallery
Management Platforms
Equipment Calibration
Integrated verification systems to ensure the load ring and gauges maintain peak accuracy.
Parameter Optimization
Easy adjustment of cross-beams to accommodate various sample heights and mould sizes.
Safety Monitoring
Overload protection mechanisms to safeguard the frame and precision components.
Quality Assurance
Strict adherence to materials testing standards for reliable geotechnical data reporting.
Accessory Integration
Seamless compatibility with standard CBR moulds, loading plates, and penetration pistons.
Workflow Efficiency
Optimized loading/unloading cycles to increase laboratory throughput and productivity.
Investment Return Comparison
| Evaluation Factor | Standard Manual Testers | Automatic CBR Tester |
|---|---|---|
| Testing Precision | Moderate (Human Error) | High (Constant Rate) |
| Labor Requirement | High Manual Effort | Low / Semi-Automatic |
| Standard Compliance | Basic | Comprehensive (ASTM/EN) |
| Throughput Rate | Slow Cycle Time | Rapid Re-testing Speed |
| Data Reliability | Variable | Consistent & Reproducible |
Frequently Asked Questions
Our CBR Test Machine is fully designed to meet the requirements of ASTM, EN, AASHTO, and BS/NF standards, ensuring your laboratory results are globally recognized.
The machine is specifically designed for cohesive materials with a maximum particle size of less than 19 mm (3/4”).
The system utilizes a precision-driven mechanism that loads the penetration piston into the soil sample at a constant rate (typically 1.27 mm/min) to ensure accuracy.
Yes, while the primary test speed is optimized for international standards, the unloading speed is adjusted to 5 mm/min for efficient re-testing.
The unit comes complete with a 50 kN Load Ring, a digital dial gauge (25 x 0.01 mm) with holder, and a specialized penetration piston.
Yes, the CBR Tester is specifically designed to be mounted on a suitable laboratory bench, featuring a compact and robust frame for space efficiency.
