Construction Bridge Isolation Rubber Bearings High Damping Bridge Rubber Bearing Building Lnr Rubber Bearing

• Customization: Available
• After-sales Service: 1 Year
• Warranty: 1 Year
• Model NO.: JT06
• Certification: GB
• Usage: Beam Bridge
• Structure: Laminated Rubber Bearing
• Material: Rubber Bearing
• Activity: Multi Direction Movable Bearing
• Product Name: Lead Rubber Bearing
• Size: Accept Customized
• Advantage: Long Working Life
• Application: Bridge , Building
• Feature: Seismic Isolation
• Quality: National Quality Standard
• Transport Package: Pallet
• Specification: rubber and steel plate
• Trademark: HengJingGong
• Origin: China
• HS Code: 4016999090
• Production Capacity: 100set/Month
• Package Size: 35.00cm * 35.00cm * 15.00cm
• Package Gross Weight: 30.000kg

Product Description

Product Description

The Seismic Isolation Rubber Bearing is an advanced structural component widely used in buildings and bridges to mitigate the destructive effects of earthquakes, strong winds, and other dynamic loads on structures. This product is manufactured by alternately laminating thin steel plates and rubber layers, bonded together through high-temperature and high-pressure vulcanization. Its core principle is to effectively dissipate seismic energy by extending the structure's natural vibration period and increasing damping, thereby significantly reducing the seismic force transferred to the upper structure (isolating approximately 80% of the seismic force). This greatly enhances the structural seismic performance, protecting buildings and ensuring human safety.

Material

The bearing primarily uses Natural Rubber (NR) or specially formulated synthetic rubber (such as high-damping rubber).

Internal thin steel plates serve as reinforcement skeletons to provide sufficient vertical stiffness and load-bearing capacity. 

Some models (e.g., lead-rubber bearings) incorporate a pure lead core plug at the center to offer higher damping and initial stiffness.

Working principle

During earthquake, the vibration from various directions will impact fixed base building and results in deformation and building or bridge damages. The high damping bearing pad is improved through high damping material, which the damping ratio can approach to 15% to 18%.

When the earthquake comes, the high damping rubber bearing will increase the horizontal displacement through rubber shear deformation and reduce friction coefficient. The large displacement can weaken the vibration from all direction and reduce the damage of building and bridges.

Functions
    *Period Extension: Horizontal stiffness 0.5-2.0kN/mm, extends structural period by 2-3 times
    *Energy Dissipation: Full hysteresis loops with equivalent damping ratio 15%-25%
    *Load Support: Vertical capacity 500-30,000kN, stably supports superstructure
    *Self-centering: Automatically returns to initial position, residual deformation <5%
    *Displacement Limiting: Limit device activates at large deformation to prevent falling off

Specification

Characteristics		Requirements
G Modulus (MPa)		0.7	0.9a	1.15
Tensile strength (MPa)	Moulded Test Piece	≥16	≥16	≥16
	Test Piece From Bearing	≥14	≥14	≥14
Minimum Elongation at Break (%)	Moulded Test Piece	450	425	300
	Test Piece from Bearing	400	375	250
Minimum Tear Resistance (kN/m)	CR	≥7	≥10	≥12
	NR	≥5	≥8	≥10
Compression Set (%)	CR 24 h, 70 °C	≤15
	NR 24 h, 70 °C	≤30
Accelerated Ageing (Maximum change from unaged value)
Hardness (IRHD)	NR 7d, 70 °C	-5+10
	CR 3d, 100 °C	±5
Tensile strength (%)	NR 7d, 70 °C	±15
	CR 3d, 100 °C	±15
Elongation at break (%)	NR 7d, 70 °C	±25
	CR 3d, 100 °C	±25
Ozone Resistance	Elongation: 30%, 96 h	No cracks
	40±2 °C
	NR 25 pphm
	CR 100 pphm

Installation

Type

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.

FAQ

1.When can I get the quotation?
A:We usually quote within 24 hours after we get your inquiry.

2.How long can I expect to get the sample?
A:The samples will be ready for delivery in 5-10days. The samples will be sent to you via express and arrive in 5-7days.

3.How long is the delivery time
A:Usually 10-15 days, depending on the quantity purchased.

4.How can I get a sample to check your quality?
A:After negotiating the price, we will provide you with samples for testing.

5.what can you buy from us?
Bridge Bearing Pad,Seismic isolation bearing,Expansion Joint,Rubber Inflatable Airbag,Waterstop Belt/Strip,Steel Expansion Joint,Butyl Tape

6.What's payment term?
A:T/T, L/C at sight, Western Union

7. Do we have quality guarantee?
Of Course!
--from raw material to manufacturing, we have rigid quality control.
--before delivery, we have strict quality inspection.
--Third party inspection is also available at your request.
--We also have ISO, CE certificates.