Structural bearings, Pedestrian Bridge, Melbourne Airport

Granor Structural Bearings

Granor’s advanced design capability has been applied to an extensive range of Structural Bearings, from high load capacity Pot Type Bearings to small compact Series “B” Bearings for specialist applications, such as conveyor belt galleries, pedestrian bridges, multi level car parks and plaza decks.

Proprietary Structural Bearing solutions – Pot Type

Primarily of metal construction, the critical element of Granor® Pot Type Structural Bearings is the elastomeric pad, which is designed to structurally accommodate movement. Granor® manufactures a range of the widely used Pot Type Structural Bearings, with each design customised to specific application requirements.

Granor® Pot Type Structural Bearings feature a circular elastomeric pad encapsulated inside a metal “pot” having a close fitting lid, which acts as a “piston”. Sealing rings, typically recessed into the circumference of the elastomeric pad, are designed to resist extrusion of the elastomeric pad when under load.

In this mode, the elastomeric pad acts more like a fluid than a solid and accepts high stress – typically 50 MPa Ultimate Limit State – while permitting multidirectional rotation of the supported structure.

Granor® manufactures according to customers’ required international codes. In Australia, designs comply with AS.5100.4. Granor® can also compliance test up to 19,000 kN vertical with a simultaneous horizontal load of 2,500 kN to confirm design integrity. 

The Granor® Pot Bearing range includes three standard Types:
• POTSTAY® - Fixed type
• POTFLOAT® - Free float, multi directional, slide movement
• POTGLIDE® - Guided type with slide movement restricted to one direction

Advanced designs for many of these Bearings are available to suit sophisticated applications, such as designs permitting incremental launching of the superstructure, or the incorporation of an Anti Up Lift feature.

Customised Bearing solutions

Granor® also offers an extensive range of alternative structural bearings – the Series “B” Structural Bearings and Slipjoint in situ concrete slide bearings – for custom civil engineering applications.


Other Structural Bearings in the Granor® range include:
• Series “D” GRAFAB® Type Free Slide Bearings
• Series "B" Structural Bearings
• Slipjoint "SJJ" Standard Duty Slip Joint
• Disk Bearings
• Spherical Bearings
• Incremental, or Launch Over Systems
• FLUOROGOLD® Free Slide Type

Structural Bearings