Lead Bridge Bearing for Earthquake Resistance

• Customization: Available
• After-sales Service: Installation Guide
• Warranty: 2 Years After Leaving The Factory
• Model NO.: Lead bridge bearing 010
• Certification: CE/ISO
• Usage: Beam Bridge, Highway Bridge, Railroad Bridge, Building
• Structure: Laminated Rubber Bearing
• Material: Steel Bearing
• Activity: Multi Direction Movable Bearing
• Rolling Body: Roller Bearings
• The Number of Rows: Multi-Column
• Outer Dimension: Medium and Large(120-190mm)
• Spherical: Non-Aligning Bearings
• Load Direction: Radial Bearing
• Separated: Unseparated
• Main Material: Rubber+Steel Structure+Lead Core
• Finish: Spray, Galvanized
• Color: Grey, Yellow, Red
• Load: Accoring to Drawing
• Types: Customized
• Offer: Drawing
• Factory Location: Hegnshui, China
• Business Type: Factory Manufacturer
• Name and Mark: Jingtong Rubber
• Transport Package: Plastic Bag, Then Pallet Delivery
• Specification: SGS, CE
• Trademark: HengJingGong
• Origin: Hengshui City, China
• HS Code: 7604299000
• Production Capacity: 20 Set, 12 Hours, One Production Line.
• Package Size: 40.00cm * 40.00cm * 20.00cm
• Package Gross Weight: 50.000kg

Product Description

Product Description

Lead Rubber Bearing – Excellent in Absorb Energy Dissipation and Seismic Isolation

    Lead rubber bearing, also called lead core rubber bearing, LNR rubber bearing, has similar structure with high damping rubber bearing. It is an important component of seismic isolation bearing. It is composed of laminated rubber bearing and lead core. The lead core can not only bear the heavy load and horizontal force, but also absorb energy through plastic deformation of hysteresis damping.

    Lead rubber bearing can be divided into round and rectangular shapes for different application. Additional, the lead core quantity can be single or multiple to supply maximum flexibility in the bridges or building.

Performance comparison between lead rubber bearings and ordinary rubber bearings

    There are significant differences in damping performance between lead rubber bearings and ordinary rubber bearings. The damping coefficient of the former typically exceeds 15%, while that of the latter is generally below 5%. This excellent damping property allows lead rubber bearings to effectively extend the structural period of bridges and significantly reduce the acceleration response of the superstructure. Under seismic action, lead rubber bearings can significantly improve the stress state of the structure during the earthquake due to their unique mechanical properties, making them particularly suitable for being set in areas with a seismic intensity of 8 degrees or higher.

Function of lead core bearing pad

    *Top and bottom plates: transfer loading and constraint deformation of lead core.
    *Lead plug: dissipate energy and decrease displacement.
    *Steel reinforcing plates: increase vertical stiffness and constraint deformation of lead core.
    *Internal rubber layers: support structure weight, accommodate rotation and displacement, recovery moving bearing to the original position.
    *Rubber cover: protect reinforced steel plates and rubber layers.

Specification

*Shear modulus: 0.8 MPa, 1.0 MPa, 1.2 MPa.
*Working temperature range: -25 °C to +60 °C.
*Lead core quantity: single or multiple.
*Shape: rectangular and round.
*Technical parameter

    *Rectangular lead rubber bearing specifications.
    *Round lead rubber bearing specifications.

No	Test Item		Technology Requirement	Unit
1	Hardness (Shore A)		60±5	HD
2	Tensile Strength		≥ 18	MPa
3	Elongation At Break		≥ 550	%
4	Compression Set	709 °C × 24 H	≤ 30	%
5	Brittleness Temperature		≤ -50	°C
6	Ozone Aging(50 PPHM, 20% Elongation, 40 °C × 48 H)		No Creak	–
7	Air Aging	Hardness Change (Shore A)	≤ +6	HD
		Tensile Strength Chang Rate	≤ 12	%
	-	Elongation At Break Chang Rate	≤ 20	%

Installation

Product Details

Packaging & Shipping

Company Profile

    Hengshui Jingtong Rubber Co., Ltd., located in Hebei Province's Hengshui City, is a professional manufacturer of engineering rubber products. Our product range includes bridge bearings, expansion joints, water stop strips, water stop belts, inflatable cores, building deformation joint device and water plugs, which are widely used in bridge, tunnel, water conservancy, and power engineering projects. The company boasts advanced technology and mature processes to ensure reliable product quality.

    We have a professional technical team and a comprehensive after-sales service system to ensure customers receive high-cost-performance products and attentive service. Hengshui Jingtong Rubber Co., Ltd. is committed to continuous innovation to meet market demands and looks forward to esta  blishing long-term cooperative relationships with customers from both domestic and international markets.

, we can provide various styles to meet your needs.

FAQ

1. who are we?
We are based in Hebei, China, start from 2013,sell to Domestic Market(40.00%),Southeast Asia(23.00%),Africa(16.00%),North America(7.00%),South America(7.00%),Western Europe(7.00%). There are total about 51-100 people in our office.

2. how can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;

3.what can you buy from us?
Bridge Expansion Joint,Rubber Waterstop,Swelling Waterstop Strip,Seismic Isolation Bearing,Rubber Bearing Pad

4. why should you buy from us not from other suppliers?
1.More than 20 professional senior technical personnel.
2.There are 10 series,over 200 species and more than 2,000 specifications.
3.All products have been authenticated by the Ministry of Communications.
4.Self-research and development,professional.

5. what services can we provide?
Accepted Delivery Terms: FOB,CFR,CIF,EXW,FAS,CIP,FCA,CPT,DEQ,DDP,DDU,Express Delivery,DAF,DES;
Accepted Payment Currency:USD,CNY;
Accepted Payment Type: T/T,L/C,Credit Card,PayPal,Western Union,Cash,Escrow;
Language Spoken:English,Chinese