Seismic steel ball bearings are improvements made in steel ball bearings on the basis of a form bearing. Because of finished steel bearing steel ball bearing price shock, often occurs in the course of the rollers in the displacement tilt, can not be restored in situ, to the holder of the maintenance and repair of a great deal of difficulty. Such as roller bearing roller Nanjing Yangtze River Bridge handsome and can not be reset, but also occur even Xuan roller pin cut phenomenon. To overcome the above drawbacks roller bearing steel ball bearing steel card TLQZ recent years, the development of a slide hinge stand that retained the original roller bearing upper part (ie hinge section), and Part of the original roller bearing roller cancellation, change into flat Teflon and stainless steel slide between the slide, thus to meet the needs of bearing displacement. The seat is now used in some types of long-span steel bridge and concrete bridge use. Since seismic steel ball bearing, mainly through the hinge axis, the force acting on the carriage top plate, should be rigid angle (35 ℃ ~ 45 ℃) diffusion at the center of the hinge shaft is passed, and then down to a rigid corner (35 ℃ ~ 45 large amount of steel ℃) diffusion transfer to the top surface seismic ball bearing slide bearing steel manufacturer specializing in the design, so that the PTFE plate can even force, and therefore the overall structure of the seat height is still great, bearing . Indeed if the force transmission surface contact of ball bearings (or bearing cylinder) instead of the hinge axis, and can reliably meet the requirements of the rotation bearing, and can significantly reduce the height of the bearing structure, reduced branched The overall amount of steel seat. Seismic steel ball bearing steel bearing using ZG230-450II and ZG270-500II, with its mechanical properties and chemical composition should be consistent with "carbon steel castings classification and technical conditions" (GB979) requirements. Seismic steel ball bearings should be normalized, the removal of the gate and welding repair should be carried out before the heat treatment. The main parts of the force does not allow the casting cracks exist. Seismic steel ball bearings in the 1980s China has formed in seismic steel ball bearing seat in a special oil chamber seismic steel ball bearings, bearing reaction force is measured and then use the oil in the hydraulic chamber changes to achieve a satisfactory effect. In 1992, for example to meet the needs of the Guangzhou-Shenzhen line Shilong bridge construction, in order to bridge the construction phase of the internal forces of change to test, you need to accurately determine the course of prestressed bridge fulcrum reaction force changes in the beam. Developed by the Academy of Railway Sciences 5MN level seismic steel ball bearings. 1.2 earthquake steel ball bearings in order to verify the test to determine the possibility of the use of rubber bearing reaction force within the oil chamber pressure, we first tested bearing three 2MN processing to solve the following problems by testing simulation (1) seat The method of forming the rubber oil chamber; (2) bearing the load oil system; (3) load bearing performance and test operation process; by setting the pressure receiving plate by a layer of Teflon or rubber Polyester film made of isolated pocket, can form a layer of oil chamber within the rubber sheet. In the oil chamber filled with a rubber-effect does not occur with special hydraulic oil, as the power transmission medium. Then the oil through a sealing system, the rubber cavity can accurately by hydraulic oil pressure gauge or oil pressure sensor to measure. Seismic steel ball bearing manufacturer specializing in the design, seismic steel ball bearings, two-way sliding support provided by Hengshui Rubber Co. Guangrun. Hengshui Guangrun Engineering Rubber Co. (www.grgcxj.cn) (www.grgcxj.cn) strong, credible, Hebei Hengshui site construction materials industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Guangrun Rubber Company and you work into the brilliant, for a better future! You can also access (www.grgcxj.cn/supply_details_38572505.html), for more information about the company.