Seismic steel ball bearing is a friction coefficient in the general setting of fixed bearing sliding surface is greater than 0.2, and set the vertical rubber bumper strips. In normal use the sliding bearing is not able to withstand the horizontal forces 0.2P (P for bearing vertical reaction force). When the earthquake, when the horizontal seismic force is greater than 0.2P, bearing sliding surface slip, while compressed rubber damping strip tensile steel ball bearings, when the big bag must seismic horizontal force (about 0.25P), rubber minus Shock of the side fence yield, rubber unloaded. Friction performance test seismic steel ball bearing surface between stainless steel ball bearings in order to ensure that it is necessary to withstand the horizontal forces 0.2P design, but also can occur in the larger relative displacement seismic forces (0.2P) effect, decided to adopt stainless sliding surface, so that the contact condition of sliding face plate will not rust and other factors vary, in order to ensure long-term stability of the surface friction coefficient of the sliding bearing. Seismic steel ball bearing friction after high stress, low coefficient of friction stress to do at this time is slightly larger than the coefficient of friction coefficient of friction under direct pressure corresponding low-stress conditions. This is because under high stress. Mechanical interlocking stainless steel surface is deep, so that the friction coefficient increases. According to the actual situation of the Qiantang River Bridge seismic force steel ball bearing, at constant load and live load together, contact between the stainless steel type tensile stress of 15MPa SJQZ steel ball bearings, constant stress loads about 12MPa GQZ type tensile steel ball bearings, to ensure the bearing friction coefficient of 0.2 to 0.28, Academy of Railway Sciences has done a brass plate with stainless steel flat friction TGQZ type tensile steel ball bearings, then friction coefficient between 0.135 to 0.15. Seismic steel ball bearing mechanical properties of steel ball bearings in seismic bearing steel liner plate to the middle of the bridge along the ends of the roof when the relative sliding bearings and intermediate steel liner plate (seismic force is greater than 0.2P), the Seismic bearing steel ball bearing, whereby the lateral force, the lateral force by bolted on the top plate of the lateral bearing steel baffles bear. When you reach a certain lateral force, yielding steel bezel, steel ball bearing bearing capacity loss. When seismic steel ball bearings under pressure, will produce lateral lateral pressure steel bezel, rubber due to the Poisson ratio close to 0.5, so the stress state in the three lateral stress is consistent with the normal stresses of rubber. The lateral force acts on the steel sheet, the steel sheet has to be tightly pressed by means of screws, the main bolt has sufficient strength, under the stress state is equivalent to the lower end of the lateral steel sheet consolidation cantilever. Steel stress stress measurement and theoretical calculations are very close. SJQZ type tensile steel ball bearings, tensile steel ball bearings, manufacturer direct 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_38572985.html), for more information about the company.