Building Vibration Isolator Bearings Hdr High Damping Bridge Rubber Bearing Seismic Isolation Rubber Bearings for Buildings

• Customization: Available
• After-sales Service: Installation Guide
• Warranty: 2 Years After Leaving The Factory
• Model NO.: vibration isolator bearings
• Certification: GB, BS, ASTM
• Usage: Beam Bridge, Highway Bridge, Railroad Bridge
• Structure: Lead Rubber Bearing
• Material: Natural Rubber, Neoprene , Steel Plate
• Activity: Multi Direction Movable Bearing
• Color: Orange, Grey and Other Customized
• Shape: Rectangular and Round
• Shear Modulus: 0.8 MPa, 1.0 MPa, 1.2 MPa.
• Working Temperature Range: -25 to +60
• Size: Customized
• MOQ: 1 Piece
• Transport Package: on The Pallet with PE Film
• Specification: 200*200*100mm
• Trademark: HengJingGong
• Origin: Made in China
• HS Code: 4016999090
• Production Capacity: 1000 Sets / Month
• Package Size: 30.00cm * 30.00cm * 15.00cm
• Package Gross Weight: 60.000kg

Product Description

Product Description

High Damping Rubber Bearing – Fixed and Sliding Types for Large Displacement
    High damping rubber bearing, also called HDR bearing pad, is one of seismic isolation bearing. It has excellent seismic isolation performance to effectively reduce the bridge damage caused by earthquake.

    HDR bearing pad is composed of specialized designed rubber with high damping performance, sandwiched together with steel plate layer. When installing, the high damping rubber bearing is commonly used with top and bottom steel plate and connection accessories.

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.

Function
*Effective Seismic Isolation: Extends the structural period to avoid the predominant seismic period, significantly reducing the seismic response of the upper structure.
*Energy Absorption: Efficiently dissipates seismic energy through hysteretic deformation (plastic deformation of the lead core or internal friction of high-damping rubber).
*Load Support: Provides high vertical load-bearing capacity and stiffness to stably support the weight of the upper structure.
*Displacement Adaptation: Allows significant horizontal shear deformation to accommodate movements caused by temperature changes, shrinkage, and other factors.

Features
*High Damping Performance: HDR and LRB bearings can achieve an equivalent damping ratio of 10% to 20% or higher, offering remarkable energy dissipation.
*Self-Centering Capability: Exhibits excellent elastic recovery after earthquakes, minimizing residual structural deformation.
*Strong Durability: The product is resistant to aging, fatigue, and harsh weather conditions, with a long design service life comparable to that of the building structure.
*Eco-Friendly Design: HDR bearings do not use lead, avoiding heavy metal pollution and aligning with green building principles

Specification

*Working temperature range: -40 °C to +60 °C.
*Rad: 0.006 rad and 0.008 rad.
*Damping ratio:

    *HDR (Ⅰ) bearing rubber: 15%.
    *HDR (Ⅱ) bearing rubber: 12%.
    *LNR bearing rubber: 10%.

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

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.