Rock Bolt Pull Out Test Apparatus

Rock Bolt Pull Out Test Apparatus

Product Code : EL-RTLE-10508

Quick Answer: The Rock Bolt Pull Out Test Apparatus measures the working and ultimate load capacities of rock bolt anchors, with the pull out force indicated on a load gauge or measured using a load cell with a digital indicator. It comprises a central hole jack, hand pump with a load gauge, a directional control valve (for central hole jacks above 500 kN capacity), a 5 m flexible hose pipe, and truss high tensile bolts with coupling, along with an arrangement for fixing a dial gauge to estimate deflection against the load.

The objective of the test method is to measure the working and ultimate capacities of rock bolt anchors. In general, the pull out force is indicated on the load gauge; however, a load cell with a digital indicator can also be used to measure the pull out load. The system comprises a central hole jack, hand pump with a load gauge, directional control valve (only for central hole jacks above the capacity of 500 kN), flexible hose pipe of 5 mts, and truss high tensile bolts with coupling. An arrangement is also provided for fixing the dial gauge to estimate deflection against the load.

Standards: IS 11309, ASTM D 4435

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Last Updated: September 2026

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