The 7690 Karol-Warner Load Frame is an economical Load Frame that can perform a variety of Marshall testing applications. Its 10,000lbf (44.5kN) capacity and fixed strain rate of 2in/min (50.8mm/min) covers Marshall, Indirect Tensile (Lottman), Semi-Circular Bend (SCB), Tack Shear, and other testing of hot-mix asphalt samples when equipped with proper load and displacement components. The powerful 1hp AC drive motor regulates speed to within ±1%.
With its sturdy powder-coated steel cabinet and precision loading screw with protective boot, the Load Frame can handle even the most severe lab environments. Front panel controls allow the operator to adjust the direction of the 8in (203mm) diameter platen. The vertical 1.25in (32mm) diameter rods allow for a quick change of crossarm height.
MarshallLottmanSemi-Circular Bend (SCB)Tack Shear
7690: 225.0lb (102.06kg)
7690F: 250.0lb (113.40kg)
7690F-50: 250.0lb (113.40kg)
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