Elastometric Bearings

Applications and Types of Elastomeric Bearings

Elastomeric bearings fall under bridge bearings, and there are a wide variety of these used for various applications.  There are a lot of bridge bearings that are similar to these, such as neoprene bearings and laminated elastomeric bearings, and these are commonly used in the construction industry.  Various standards dictate the manufacturing and design of these bearings, in order to ensure robust performance, longevity and reliability. 

These bearings are used to deal with a variety of conditions relating to steel structures, which include movement as a result of expansion or contraction due to temperature flux, shrinkage of the structure, the strain of tensioning, or movement of the earth.  They are commonly used as part of the construction of buildings with steel frames and also for bridges, and are designed to minimise resistance resulting from movement within metal or steel frames, and function as structural bearings.  The distinctive low friction characteristics of polytetrafluoroethylene (PTFE) are utilised to increase the tractability and strength of rubber.

Types of Elastomeric Bearings

  • BA:  Manufactured to provide sliding movements that are low friction in up to two directions, these bearings use PTFE sliding on highly polished hard steel.  PTFE can be backed with metal to deal with high temperature conditions, but they do not deal well with vigorous movement.  They can handle loads of between 100kN to 2 500kN, and often special, adaptive materials are used to deal with temperatures of more than 250Cº.
  • BAR:  The load range of these bearings falls between 30kN and 250kN, and they are able to deal with small rotation movements, as well as limitless sliding movement.  These bearings can only be used in conditions where the temperature is relatively low to fall within an ambient range.
  • BR:  Laminated rubber bearings are designed to cater for medium to short length constructions and can effectively handle nominal loads ranging between 200kN and 3 000kN. Moderate temperatures are required for the efficient operation of these bearings, and the movement and gyration is restricted by the amount of laminations on the bearings.
If you need to find out more about our excellent product lines, which include elastomeric bearings, give our friendly and informed team a call.  We will be able to provide you with accurate information, excellent service and high-quality bearings that are suited to your particular application or industry, in order to help you make an informed decision. Contact us today for more information.