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Lead Core Rubber Bearing for Foreign Market

Basic Info

Model No.:  LRB

Product Description



Model NO.: LRB


Certification: CCC, SGS, CE, ISO


Material: Neoprene or Natural Rubber


Shape: Rounded and Rectangle


Trademark: HD


Origin: China




Application: Transportation


Surface Treatment: Yes


Usage: Construction, Building,Bridge


Size: D100-D2000mm


Specification: LRB


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

Lead Core Rubber Bearing for Foreign Market

Lead Core Rubber Bearing for Foreign Market



Standard JT/T4-2004 BS5400 Section 9.2
Rubber Natural Rubber Neoprene
CR
Natural
Rubber
Neoprene
CR
Hardness(IRHD) 60±5 60±5 50±5/60±5/70±5
Tensile Strength (M Pa)≥ 18 17 17 15.5
Ultimate Elongation (%)≥ 450 400 450/400/350 400/350/300
Compression Set 70oC×22h 70oC×22h 100oC×22h
<30 <15 <30 <35
Heat Resistance Test Condition 70oC×168h 100oC×70h 70oC×168h 100oC×48h
Change in Hardness -5,+10 0,+10 <10 <15
(IRHD)
Rate of Tensile Strength Reduction(%) <15 <15
Rate of Ultimate <20 <40 <20 <40
Elongation Reduction
(%)
Ozone Resistance 25~50pphm,20% strain 25~50pphm,20% strain
40oC×96h 30oC×96h
No Cracks No Cracks

Contact us if you need more details on Lead Core Rubber Bearing. We are ready to answer your questions on packaging, logistics, certification or any other aspects about High Damping Rubber Bearing、Anti-Seismic Bridge Bearing. If these products fail to match your need, please contact us and we would like to provide relevant information.

Product Categories : Seismic Protection Bearing > Lead Core Bearing

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