Elastomeric rubber bearings provide vibration isolation for application where structure movements, longitudinal, transverse and rotational are too small to moderate. These are available in strip form or as plain pads. Laminated types, consisting of rubber layers separated by vulcanised steel plates, provide a robust bearing for larger structures and can also be configured in sliding types.
Elastomeric Bearings and Strip
A bearing consists of rubber layers separated by vulcanized steel- plates. A rubber cover is fitted around this assembly (see fig. 1).
Natural rubber or Chloroprene rubber is used for the layers.
Elastomeric Bearings provide an excellent economic solution for applications where structure movements, longitudinal,transverse and rotational are too small to moderate. They provide vibration isolation and are generally simple to install.
In strip form they can be laid along a diaphragm to support multiple beams. Plain pads are available in standard or special sizes. Laminated types provide a robust bearing for larger structures and can also be configured in sliding types.
Natural rubber is not too sensitive to changes in temperature and shows only slight growth in deformation, over the period of deformation at a constant load (low creep). Natural rubber is highly resistent against ozone, ageing, UV and chemical effects.
The vulcanized steel reinforcement plates meet the requirements of BS1449.