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California Bearing Ratio Test Apparatus (CBR)
California Bearing Ratio (CBR) Test Apparatus measures the strength and load-bearing capacity of subgrade soils and highway sub-base materials, complying with ASTM, BS, and IS standards.
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California Bearing Ratio Test Apparatus (CBR)
California Bearing Ratio (CBR) Test Apparatus measures the strength and load-bearing capacity of subgrade soils and highway sub-base materials, complying with ASTM, BS, and IS standards.
Est. Lead Time
2-4 Days
Standard finish in stock. Custom fabrication adds 5 days.
Galvanized Finish
Mill Test Reports
Seismic Rated
Bulk Discounts
Product Overview
The California Bearing Ratio is used to determine the strength of subgrade soil and highway sub bases by using penetration testing method.
It is designed to test the cohesive property of the materials having particle size less than 19mm or as specified in the standards such as ASTM, BS or IS2720.
Primetek’s make CBR testing machine is composed of a sturdy two pillar type load frame with an adjustable upper cross beam driven by a powerful electromechanical force of maximum 50 kn capacity.
This machine is supported with high quality reduction gearbox to give the accurate output ( Speed). This CBR can provide the variable speeds such as 1.25mm per minute for single speed and 1.25, 1.5 & 2.5 mm per minute for Three speed machine.
General Features
- Analog readout feature from dial Gauge
- Rapid Platen Adjustment through Rotary Switch
- Variable speed adjustments
- Highly accurate speed
- Load Calculation from Proving Ring
- Linear Displacement calculation from Dial Gauge
Standard Load Values for CBR Test
| Penetration(mm) | Standard Load(kg) | Unit Standard Load(kg/cm2) |
| 2.5 | 1370 | 70 |
| 5 | 2055 | 105 |
| 7.5 | 2630 | 134 |
| 10.0 | 3180 | 162 |
| 12.5 | 3600 | 183 |
- Accessories
- Robust and Sturdy Load frame.
- 25 mm Dial gauge and 50 kn proving ring for load calculation
- CBR Mould with tripod, Swell plates and penetration Piston
- Compacting rammer of 2.69 & 4.89 kg.
- Surcharge weight: Annular and Slotted.
- User Manual
Models Available
- Single Speed
- Three Speed
Safety Certification
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Certified Structural Grade
Verified by third-party lab
Our products undergo rigorous testing to ensure they meet and exceed industry safety standards for high-load applications.
Need a Customization?
We offer precision cutting and threading services for bespoke structural requirements.
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California Bearing Ratio Test Apparatus (CBR)
SKU: PTK-1150