| Customization: | Available |
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| After-sales Service: | Technical Guidance |
| Warranty: | 2 Years After Leaving The Factory |
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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.
Working principle
The lead rubber bearing has same mechanical properties with laminated rubber bearing. Besides, it has high damping property.
As we all know, the laminated rubber bearing has large displacement deformation in horizontal direction.
In the earthquake, this structure can separate top and bottom structure vibration, enlarge self vibration cycle and reduce seismic force. Besides, the lead core will be squeezed and yielded during the shear process to dissipate Seismic force.
After the earthquake, the lead rubber bearing can help building restore the normal position through dynamic recovery and recrystallization of lead core and shear strain of laminated rubber bearing.
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.
| 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 | % | |
HENGSHUI JINGTONG RUBBER Co., Ltd located in Hengshui City, hebei provice, where very close to TianJin City, Beijing city, that be of convenient transportion.It covers an area of 200 thousand square meters, including 3000m2 workshop, and 2000m2 for testing, there are more than 200 employees, including 10 engineers and 10 testing workers.
We are specializes in manufacturing and exporting bridge bearings, waterstop waterproof materials, Culvert & Pipeline Inflated Rubber Balloons since the establishment in 2007.
Our products including construction waterproof materials, bridge and building rubber bearings, culvert and pipeline rubber airbag etc. Which are widly used in brige highway, culvert, pipeline, building constructions. Adhering to the principle that quality determines the success and failures. Our company can provide different types of products to meet the different needs of customers.
Our products export to Malaysia, Kenya, Uganda, USA etc. markets,that has passed ISO, GB etc. Inspection and provide the third party reports with more than 3000 projects in domestic and overboard.To suit your specific scheme, we can design and produce as your designs, even with complex profiles and different materials. So if you want to make a custom order, don′t forget to enclose your design drawing, sizes and standards.
We sincerely welcome domestic and foreign traders and businessmen to visit us for guidance, cooperation and development! Sincerely look forward to establishing and developing trade partnership with you !
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
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HENGSHUI JINGTONG RUBBER CO., LTD
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Contactor: Nancy Lee (Oversea Market Manager)
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Office: #1202, Huizhong Building, Taocheng district, Hengshui City,053000, Hebei Province, China.
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Factory: NanWangZhuang Village, Pengdu Town, BinHu District, HengShui city, 053000, China.
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Welcome your inquiry !
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