Rock Bolt Pull Out Test Apparatus

Product Code : EL-RTLE-10508

Rock Bolt Pull Out Test Apparatus (code EL-RTLE-10508) is used to measure the working and ultimate load capacities of rock bolt anchors. The system comprises a central hole jack, a hand pump with load gauge, a 5 m flexible hose pipe and truss high tensile bolts with coupling, with a directional control valve for jacks above 500 kN and an arrangement for fixing a dial gauge to estimate deflection.

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Specifications

What Is the Rock Bolt Pull Out Test Apparatus Used For?

Rock bolts hold excavations, tunnels and slopes together, and a pull out test shows how much load an installed bolt can carry before it slips or fails. The central hole jack is passed over the protruding bolt and connected to it through the coupling, then the hand pump applies tension while the load gauge, or a load cell with digital indicator, shows the pull out force. A dial gauge fixed to the arrangement records the bolt movement, so load can be set against deflection to find the working and ultimate capacities. The standards listed are IS 11309 and ASTM D 4435.

What to Specify When Ordering

• Quantity — the number of test sets required.
• Jack capacity — the central hole jack capacity required; the directional control valve applies to jacks above 500 kN.
• Load measurement — load gauge reading, or a load cell with digital indicator.

Frequently Asked Questions

What does the Rock Bolt Pull Out Test Apparatus measure?
It measures the working and ultimate capacities of rock bolt anchors by pulling on the installed bolt and recording the pull out force.

How is the pull out force read?
In general, the force is indicated on the load gauge of the hand pump, and a load cell with a digital indicator can also be used to measure the pull out load.

When is the directional control valve included?
The directional control valve is supplied only with central hole jacks above 500 kN capacity, and not with smaller jacks.

How is deflection measured?
An arrangement is provided for fixing a dial gauge, which is used to estimate the deflection of the bolt against the applied load.

What hose and bolts are supplied?
The system includes a flexible hose pipe 5 m long and truss high tensile bolts with coupling for connecting the jack to the rock bolt.

What details should accompany an export order?
Include the quantity and jack capacity, where the goods are going (country plus port or city), the preferred delivery terms, for example FOB or CIF, the packing needed and the tender reference, if there is one.

OEM Manufacturer

Buyers of the Rock Bolt Pull Out Test Apparatus deal directly with its maker, Engineering Lab Equipment (Engineering Labs Equipment Pvt Ltd), whose works are at Plot No. 43, Industrial Park, Sector 2, Growth Center, Saha, District Ambala, Haryana, India. The company designs, makes and tests rock testing equipment for specimen preparation, strength and durability tests, supplies engineering colleges, polytechnics, technical training institutes and research laboratories in India and overseas, and builds to institution-specific requirements on request. Tender details are on the Tenders/OEM page.

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See the full Rock Testing Lab Equipment range or all Civil Engineering Lab Equipment.

Request a Quote

For this and other rock testing lab equipment, schools and colleges can contact Engineering Lab Equipment, a manufacturer, supplier and exporter based in Ambala, India. Quotations are given on request: send the number of test sets, the central hole jack capacity and the load measurement method and your delivery location through the contact page, or add the Rock Bolt Pull Out Test Apparatus to the enquiry cart from this page.

Last updated: October 2026