LRB High Damping Rubber Isolation Bearings

Lead Core Rubber Bearings (LRB) consists of a laminated rubber and steel bearing with steel flange plates for mounting to the structure. Ninety percent 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. 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. A Hole will be cut in the middle of the ordinary rubber bearing,and lead-core rubber bearing will be formed by pouring lead.this type of support has not only a higher damping ratio,but also a certain initial stiffness.so it can provide the building with seismic and wind resistance.

Features of rubber bridge bearing:

1.Quality materials including natural rubber, neoprene complying with AASHTO standards.

2.Allow for expansions and contractions of precast steel structure of bridges.

3.Capable to control load distribution, meanwhile accommodate thermal and end-beam rotational movements.

4.Vibration, sounds and shocks isolation.

5.Avoid excessive load eccentricity and edge compression.

6.Simple but robust structure.

7.Lower price than laminated elastomeric bearing.

8.High cost effectiveness

9.Minimal maintenance is needed.

For Cusomized Design Bearings

1.Please provide drawings firstly, or express your requirements then confirm final design from OVICTOR.

2.The final design is subject to customer final confirmation message.

3.Becasue of Customized rubber products, mostly is Non returnable goods.

4.Rubber vulcanized products are produced under high temperature and high pressure, which inevitably produce some small defects, such as bubbles, etc., but they are all within the reasonable standard. Please know and understand these.