These penetration pistons are used specifically for California Bearing Ratio (CBR) soil subgrade and base course tests, and comply with ASTM and AASHTO requirements. The 1.954in (49.63mm) diameter pistons fit standard testing equipment and are available in two models with different thread diameters.
The CBR Penetration Piston (1/2in x 20tpi) has a 1/2in (12.7mm) diameter male connector with 20tpi threads. Is used with 100 to 10,000lbf load rings and 500 to 2,500lbf load cells.
Features:
- Constructed to fit standard CBR testing equipment
- Available with two different mounting connectors
- Conforms to ASTM and AASHTO testing standards
| Threaded Connection Diameter | 1/2in x 20tpi Male Connector |
| Diameter | 1.954in (49.63mm) |
| Product Dimensions | 7.5 x 1.954in (191 x 49.63mm) |
Meets Test Methods:
ASTM D1183
AASHTO T193