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POD Bridge Bearings

for high speed rail bridges

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The POD bearing utilizes the proven reliable design technology used by the Disktron Bearing System.  The POD bearing design incorporates tighter tolerance design parameters to handle the higher braking and traction loads seen in high speed rail applications.

Polytron Disk – By utilzing a polyether urethane dixc, the POD Bearing accommodates vertical design load os 10 to 10,000 kips while maintaining its ability to provide rotation in both longitudinal and transverse directions.

SRM (Shear Resisting Mechanism) – A large diameter high strength steel pin transfers horizontal loads from the upper bearing plate to the baseplate and isolates shear loads from Polytron Disc.

PTFE – The PTFE to stainless steel sliding interface results in a very low coefficient of friction.

Polished Stainless Steel – Stainless steel with a mirror finish provides a low friction sliding interface for the PTFE.

  • Rotation capacity in excess of 0.08 radians
  • Low vertical deflection for single and multi-span structures 
  • Ability to handle ultra high braking and traction forces
  • Can accommodate all live to dead load ratios
  • Accommodates high vertical and horizontal loads
  • Maintains tight control of horizontal displacement of structure

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The lower bearing plate of the POD bearing with a machined recess for the Polytron Disc. This disc does not require a sealing ring and can be designed to accommodate vertical  loads from 10 to 10,000 kips while maintain its ability to provide rotation in any direction.

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The Shear Restriction Mechanism designed to accommodate guided  thermal expansion is being lowered onto the Polytron Disc. The top surface of this component is finished with a recessed and bonded PTFE.

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The center guided sole plate with a polished stainless steel mirror finish provides a low friction sliding interface with the PTFE.

Fixed Bearings

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Expansion Bearings

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Recent Bearing Projects

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