Bridge Bearing Pad

Home Products Bridge Bearing Pad Anti Collision Shock Absorber

Anti Collision Shock Absorber

Product Item : OVTB-11007
Category： Bridge Bearing Pad
Shapes:Rectangular/Ball/Dome/others
Material:NBR/Rubber/EPDM/etc.
Usage:Shock absorption on machines/building/Road etc.
Temperature -40°C-60°C
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Product Description:

Elastomer rubber bearing pad is common and popular components for bridge shock-absorption devices. It is made of natural or neoprene rubber layers and reinforced steel plates, by high temperature and pressure vulcanization.

Features of bearing pad:
Quality materials including natural rubber, neoprene complying with AASHTO standards.
Allow for expansions and contractions of precast steel structure of bridges.

Capable to control load distribution, meanwhile accommodate thermal and end-beam rotational movements.
Vibration, sounds and shocks isolation.
Avoid excessive load eccentricity and edge compression.
Simple but robust structure.
Lower price than laminated elastomeric bearing.
High cost effectiveness.
Minimal maintenance is needed.

Elastomer rubber bearing pad technical parameter

Technical index		Neoprene Rubber	Natural Rubber
Hardness (IRHD)		60±5	60±5
Strength Tensile (Mpa)		≥17	≥18
Elongation at break (%)		≥400	≥450
Brittleness temperature (℃)		≤40	≤-50
Constant compression permanent deformation		≤15	≤30
Resistance to ozone aging test (test conditions，20% elongation,40℃×96h)		100ppmm	25ppmm
		No cracking	No cracking
Hot air aging test (The biggest change comparing with before aging numerical)	Test conditions (℃×h)	100×70	70×168
	Strength Tensile (%)	-15	-15
	Elongation at break(%)	-40	-20
	Variation in hardness(IRHD)	0，+10	-5，+10
Strength of rubber and steel Peel adhesive (KN/m)		>10	>10
Strength of four fluorine plate and rubber (KN/m)		>7	>7