Pot Bearings

Pot bearings are designed to carry the vertical loads, horizontal loads, longitudinal and transversal movements and rotations. These bearings are used at highway and railway bridges. The fully covered rubber pad is placed in a steel pot. Under high pressure the pad behaves like a liquid material. The elasticity of the rubber allows tilting movement (rotation) of the piston in the horizontal axis. Pot bearings can carry very high loads which are over 100.000 kN. There are three different types of pot bearings as fixed, free sliding, longitudinal or transverse sliding. The most accurate and economical bearing design is made when displacement, rotation, earthquake loads, minimum and maximum service loads are imported to us. Our pot bearings meet the requirements of many international standards (EN, BS, AASHTO, DIN, SETRA) and have CE certificate.

Fixed Tyep Pot Bearings (AGPF): These bearings consist of a pot / piston assembly within which an elastomeric disc is encapsulated and fitted with an anti-extrusion sealing device. Under load this encapsulated elastomeric disc acts in a similar manner to a non-compressible confined fluid, enabling the pot and piston to rotate relative to each other. These bearings enable rotation in any direction while at the structure is constrained horizontally. The function of the pot and piston parts are for fixing and securing the bearings to the bridge structure.

Free Sliding Pot Bearing (AGPM): Different from the fixed one, PTFE is fitted to provide slide in all direction.

Guided Pot Bearing (AGPL-AGPT): Guided Sliding devices are identical in construction to free sliding bearings but are also fitted with one or more guides to limit the bearings movement to only one direction.

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