NBS Source
SA-47 Randon Oriented Fibre Bearing Pad

Application

  • SA-47 random oriented fibre bearing pads have been widely used in construction applications such as structural bearings, precast/prestressed concrete structures and bridges, masonry pads and railway tie pads.
  • SA-47 material is also used for vibration isolation and shock reduction applications.

Description

SA-47 bearing pads are made from masticated rubber using a blend of recycled rubber compounds and synthetic fibre reinforcement. The ROF, or random oriented fibres, provide enhanced compressive strength, stiffness and tensile strength when compared to unreinforced or virgin bearing pad materials.


Features and benefits:

  • Distributes load between two structural elements evenly.
  • Accommodates non-parallel, load bearing surfaces.
  • Allows for small rotations.
  • Reduces electrolytic action between dissimilar metal elements.
  • Twice the compressive load of plain neoprene/nitrile materials.
  • Provides vibration and shock isolation in structural applications.
  • Meets most state DOT specification.
  • The product does not have a sliding surface, accounts for rotation and uneven surfaces and maybe a very small amount of horizontal movement through material deformation.

General information

Color

Black

Material

Rubber

Fibre reinforced masticated rubber composite.

Uniclass

Pr_20_85_85_80 Sliding surface bearingsPrimary

CAWS

E40/445 Insulating load transfer systems

E40/445 Insulating load transfer systems

E40/440 Load transfer systems

Specification data - Sliding surface bearings Enhanced data

Allowable movement of sliding bearings

No sliding surface, small amount of horizontal movement through material deformation.

Accounts for rotation and uneven surfaces.

Execution

Installing sliding surface bearings.

Product Reference

SA-47 Randon Oriented Fibre Bearing Pad

Thickness

3.2 mm.

6.4 mm.

9.5 mm.

12.7 mm.

25.4 mm.

Hardness (shore A)

To ASTM D2240, 80 ±5.

±10.

TensileStrength

To ASTM D412, 754 psi.

Minimum ±25%.

Elongation

To ASTM D412, 15%.

Minimum (±25%).

Tear strength

To ASTM D624, 150 pi.

Minimum.

CompressiveStrength

To ASTM D2137, 8,000 psi.

Literature

SA47-Bearing-Pad-0714

SA47-Bearing-Pad-0714

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