Gold Member Since 2014
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Haider Construction Engineering Materials Factory

Lead Core Rubber Bearing, High Damping Rubber Bearing, Anti-Seismic Bridge Bearing manufacturer / supplier in China, offering Professional Seismic Isolation (LRB) with High Purity Lead Core, Building Expansion Joint, Floor Expansion Joint, Bridge Joint with Big Movement and so on.

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Professional Seismic Isolation (LRB) with High Purity Lead Core

FOB Price: Get Latest Price
Min. Order: 2 Pieces
Port: Shanghai, China
Production Capacity: 1, 000, 000 Sets/Year
Payment Terms: L/C, T/T, Western Union, Paypal

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Basic Info
  • Model NO.: LRB
  • Certification: CCC, CE, ISO
  • Material: Neoprene or Natural Rubber
  • Shape: Rounded and Rectangle
  • Trademark: HD
  • Specification: LRB
  • Application: Transportation
  • Surface Treatment: Yes
  • Usage: Construction, Building,Bridge
  • Size: D100-D2000mm
  • Transport Package: as Request
  • Origin: China
Product Description
Lead Core Isolator for Building Constructions 

Lead Core Isolator consist of a laminated rubber and steel bearing with steel flange plates for mounting to the structure. 90% of our isolators have an energy dissipating lead core.

The rubber in the isolator acts as a spring. It is very soft laterally but very stiff vertically. The high vertical stiffness is achieved by having thin layers of rubber reinforced by steel shims. These two characteristics allow the isolator to move laterally with relatively low stiffness yet carry significant axial load due to their high vertical stiffness. The lead core provides damping by deforming plastically when the isolator moves laterally in an earthquake.

Isolators from 200 to 1200 mm in diameter and capacities of up to 3000 tons are
manufactured. Custom dimensions are available for special applications.

The shims for isolators are cut to exacting tolerances by laser. The steel mounting plates are machined by computer controlled milling machines that give high production throughput and accuracy. Molding each bearing takes 8 to 48 hours depending on the size of the bearing. The curing phase is continuously monitored to ensure that the rubber is uniformly cured throughout the bearing

Professional Seismic Isolation (LRB) with High Purity Lead Core

Professional Seismic Isolation (LRB) with High Purity Lead Core
Standard JT/T4-2004BS5400 Section 9.2 
RubberNatural RubberNeoprene
Hardness(IRHD) 60±560±550±5/60±5/70±5
Tensile Strength (M Pa)≥18171715.5
Ultimate Elongation (%)≥450400450/400/350400/350/300
Compression Set70oC×22h70oC×22h100oC×22h
Heat ResistanceTest Condition70oC×168h100oC×70h70oC×168h100oC×48h
Change in Hardness-5,+100,+10<10<15
Rate of Tensile Strength Reduction(%)<15<15
Rate of Ultimate<20<40<20<40
Elongation Reduction
Ozone Resistance25~50pphm,20% strain25~50pphm,20% strain
 No CracksNo Cracks
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