Elastomeric bearings reinforced internally with one or more steel plates, chemically bonded during vulcanisation are called laminatid elastomeric bearings.
Elastomeric bearings permit a smooth and uniform transfer of loads from beams to substructure and also allow beam rotations at the point of support due to deflection of beam under loading.
They further allow lateral and longitudinal movement of beams caused by thermal forces.
Elastomeric bearings have no moving parts and thermal expansion and contractions are supported by shear capacity of elastomers.
There is no sliding motion between bearing and beam or between bearing and abutment.