ASTM Two-Speed Field CBR Jacks have 10,000lbf (44.4kN) capacities with 3-1/2in (89mm) lift. Two-speed jack can generate force for the Penetration Piston when used against a reaction frame or load. A swivel base and a manual cranking handle are included with each model.

Features:

Optimal for measuring relative soil strength of in-situ soils and base course materials

Included Items:

Two-Speed Field ASTM Jack
Swivel base
Manual crank handle

Product tags

ASTM D1883 (24)
,
ASTM D4429 (6)
,
CRD-C654-95 (2)

Specifications

Attribute name	Attribute value
Estimated Shipping Weight	45.0lb (20.41kg)

Product Q&A

Q: How are longer specimens extracted and the piston returned?

Specimens longer than 5in are extracted by repositioning the Adapter Ring after maximum piston travel, and the spring-loaded piston automatically returns to the start position when the release valve is opened.