Mechanical Engineering, bridge bearings, structural engineering Specialists In Structural Movement Control
Mechanical Engineers Specialising In Structural Movement Control
Ekspan Sliding Bearings - EA Series
Description
Ekspan EA series bearings are designed to support vertical loads of up to 2000kN (200 tonnes) at bearing surface temperatures up to 150°C. For temperatures between 150°C and 280°C the bearings must be derated. Translation in the plane of movement is maintained at a low frictional resistance by the use of the mating surfaces, polished stainless steel and low friction PTFE. Bearings incorporating impregnated PTFE sintered onto bronze backing can be supplied for applications up to 280oC.
Product Information
Attachment & Movement
The bearings are available as standards with four methods of attachment. For EAG types customers must ensure that they provide shear connection adequate to react to the applied loads, but excessive welding must be avoided. Studs on EAJ & EAK types are threaded studs. Seven movement combinations are available including constraint in one axis and to give further flexibility two shapes are available for each load capacity.
Support & Installation
The bearing support members must provide uniform support. The compressive bearing stress on the supports varies through the range between 6.4MN/m2 (9281bf/in2) and 11.3 MN/m2 (1638.5 lbf/in2) When more than one bearing is installed, the working surfaces of the bearings should, unless intended by special design considerations, be parallel to one another.
Transit fixing devices must be removed on installation.