Product Description Lead rubber bearings are constructed by vertically inserting a lead core in the center of the rubber bearing. Lead exhibits a notably low yield stress, approximately 7MPa, and favourable fatigue properties when subjected to plastic deformations. This unique combination allows lead rubber bearings to effectively dissipate the seismic energy, with the potential to achieve the damping ratio up to 25%. This product is in compliance with the following standards: "Rubber bearings - Part 2: Elastomeric seismic-protection isolators for bridges" GB/T 20688.2-2006 "Rubber bearings - Part 3: Elastomeric seismic-protection isolators for buildings" GB/T 20688.3-2006 "Rubber isolation bearings for buildings" JG/T118-2018 Detailed Photos Product Parameters List of mechanical properties and specifications of type I lead-core building isolation rubber bearings Model Design bearing capacity kN Effective diameter mm Support body height mm Total rubber thickness mm First shape coefficient S1 Second shape coefficient S2 Horizontal performance value at 100% shear strain Shear strain 250% horizontal equivalent degree kN/mm Vertical stiffness kN/mm Yield force kN Horizontal equivalent stiffness kN/mm Equivalent damping ratio (Heq)% Stiffness before yield kN/mm Stiffness after yield kN/mm LRB400 1884 400 156 73 ≥15 ≥5 1.04 23 8.84 0.68 0.79 1450 27 LRB500 2944 500 183 92 ≥15 ≥5 1.27 23 10.92 0.84 0.97 1850 40 LRB600 4239 600 201 110 ≥15 ≥5 1.58 23 13.13 1.01 1.20 2200 63 LRB700 5770 700 241 129 ≥15 ≥5 1.81 23 15.21 1.17 1.38 2700 83 LRB800 7536 800 270 148 ≥15 ≥5 2.05 23 17.29 1.33 1.56 3100 106 LRB900 9538 900 291 165 ≥15 ≥5 2.37 23 19.63 1.51 1.80 3800 141 LRB1000 11775 1000 334 184 ≥15 ≥5 2.60 23 21.71 1.67 1.98 4500 171 LRB1100 14248 1100 362 202 ≥15 ≥5 2.97 24 24.05 1.85 2.26 5000 227 LRB1200 16956 1200 380 220 ≥15 ≥5 3.22 24 26.26 2.02 2.45 5500 264 LRB1300 19900 1300 414 239 ≥15 ≥5 3.45 24 28.34 2.18 2.62 6600 304 LRB1400 23079 1400 461 257 ≥15 ≥5 3.76 24 30.55 2.35 2.86 7500 362 LRB1500 26494 1500 486 276 ≥15 ≥5 4.05 24 32.63 2.51 3.08 8400 425 Remark The design bearing capacity of the seismic isolation bearings listed in the table is calculated based on the base surface pressure of 15MPa (Category C). Please convert for other types of buildings. Packaging & Shipping Company Profile Hebei Ansha New Material Technology Co., Ltd. is located in Binhu New District of Hengshui City. We specialize in R&D and production of seismic isolation and damping products for both buildings and bridges. Our products include rubber bearings, spherical bearings, friction pendulum systems, fluid viscous dampers, tuned mass dampers, buckling-restrained braces, friction dampers and metallic dampers. In addition, we manufacture bridge expansion joints and fiber-enhanced plastic products. We have established state-of-the-art physical and chemical laboratories and specialized production lines. Our company operates in full compliance with the ISO9001:2015 Quality Management System, ISO14001:2015 Environmental Management System, and ISO45001:2018 Occupational Health and Safety Management System. Guided by the anti-seismic design principle of "resisting collapse in a major earthquake, enabling repair in a moderate earthquake, and remaining undamaged in a minor earthquake", we offer our customers a comprehensive array of services. These services include technical consultation, structural analysis and calculation, des