Using ball bearings should be noted that the problem of design, design units currently found in some of laminated rubber bearings and bridge and culvert design specifications, industry standard design requirements do not match. Such as flat-size design is very large, but the thickness of thin bearing, spherical bearing checking the projects carried out in accordance with the relevant provisions of the bridge specifications and industry standards, and its compression, rotation performance can not meet the requirements, the more shear deformation small, even as the use of fixed bearing, ball bearing must also meet the requirements before end of the beam angle. This bi-directional ball bearing movable seismic spherical bearing, in the course of Void and prone to accelerated aging, early damage caused by ball bearings, the spherical bearing so bidirectional seismic activity, JT / T 4-2004 in provisions of the measured bearing angle value, rubber bearing reinforced concrete bridge greater than or equal to 1/300 of a two-way sliding seismic spherical bearing, steel bridge greater than or equal to 1/500, and at the time of factory production and production licenses issued, as necessary content testing. In addition, designers in the selection of laminated rubber bearings, the ball bearing and the bearing capacity of the bridge actually supporting reaction force should be consistent with the general range of about 10 percent of excellence, you can meet your requirements earthquake spherical bearing, not choice carrying capacity of bearing the greater carrying capacity than the actual need more security, especially if you choose the ball bearing ball bearing, the bearing capacity should be as close to the actual bridge, because PTFE sheet and endlessly when dry plate friction with positive pressure decreases. Ball bearings as an effective bridge structure damping device has been applied abroad bridge device. Vertical stiffness, bearing good performance, supported bridges can stabilize the upper structure, moderate levels of stiffness, which can meet the earthquake generated large displacement. Better performance, ball bearings have the energy absorbing seismic ground brought a large earthquake resistant ball bearing life expectancy under normal circumstances can reach 50 years. Spherical plain bearings are squeezed into a laminated rubber bearings with lead or multi-pin, a bearing structure in order to improve the performance of rubber bearing structure. LRB withstand the weight and horizontal forces of the bridge structure, lead lag pin can produce plastic deformation to absorb energy and to provide horizontal restoring force by rubber, therefore, shot type support both isolation but also has a good effect function, type of bridge structures to improve the seismic zone seismic rating of an ideal seat form. The general structure of rubber bearing structure is simple, according to the Japanese zodiac signs bearing design standards related to damping provided by said pressure is 1500 ~ 2600kn the LRB bearing design and production of finished products. Bi-slip earthquake spherical bearings | spherical bearings earthquake | 13833855982 provided by the Engineering Rubber Co., Ltd. Hengshui HaoTong. Hengshui HaoTong Engineering Rubber Co., Ltd. (www.htgcxj.com) strong, credible, Hebei Hengshui site construction materials industry has accumulated a large number of loyal customers. The company better work attitude and continuous improvement through innovative ideas will lead Hao engineered rubber and you work into the brilliant, for a better future!