CBR Load Frames

Karol-Warner Load Frames offer a variety of strain rates making them an optimal choice for California Bearing Ratio tests as well as other soil testing applications when fitted with proper available components. Our full line of Load Frames can be viewed at the main Load Frames page.

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Click the Load Frame Comparison Table above to enlarge, print, or download. The table indicates force capacity and strain rate for common geotechnical testing applications.

Most frames have load capacities of 10,000lbf (44.5kN), and select models have 20,000lbf (89kN) capacity. The frames are formulated from enamel-coated, 14-gauge steel and designed to last, even in harsh laboratory surroundings. Vertical rods have coarse threads to allow for quick changes in crosshead height to accommodate variable sample heights. Nuts and rods are manufactured to resist corrosion. Frames come with a protective boot to safeguard the loading screw.

• 7611 Load Frame, 0.001 – 0.1in / min, 10,000lbf (44.5kN) capacity is a versatile Load Frame ideal for schools or small labs looking to perform various tests.
• 7621 Load Frame, 0.0001 – 0.3in / min, 10,000lbf (44.5kN) capacity with its wide strain rate range and micro stepping drive controller, is an economical choice when executing a number of different soil tests.
• 7631 Load Frame, 0.00001 – 0.29999in / min, 10,000lbf (44.5kN) capacity can handle a variety of soil tests, with its broad strain rate range and 10,000lbf capacity.
• 7731 Load Frame, 0.00001 – 0.29999in / min, 20,000lbf (89kN) capacity offers a 20,000lbf capacity along with its wide range of strain rates.
• 7691 Load Frame, 0.02 – 2in / min, 10,000lbf (44.5kN) capacity is equipped with a motor able to control a strain rate within ±1% of its set point.