Finished steel ball bearings, WJGZ grid shock ball bearing steel products, steel ball bearings provided by Hao-engineering rubber. We are Hengshui HaoTong Engineering Rubber Co., Ltd. (www.htgcxj.com) located at: Hebei Hengshui specializes in: grid bearings, bridge expansion joints, water stop, bridge bearings, rubber bearings, spherical steel bearings addition, Ball bearings when cut vehicle weight can be evenly distributed through the bridge horizontal forces, absorb some vibration, thus extending the life of the bridge, the general speculation about his life up to 35 years, while JQZ-DX unidirectional sliding steel ball bearings, According to the information, ball bearings also has a strong resistance to fatigue characteristics GQZ seismic spherical steel bearing phone, make a bridge pier is not due to fatigue damage under the action of seismic forces, given the above advantages and rubber bearings features many advanced industrial countries like the United States, Russia, Japan, France, Germany, Canada and Australia have been fully promote the use of ball bearings in the domestic bridge project is also the same as the above countries has been widely applied can be expected in the future application of laminated rubber bearings will be further developed, new and improved products will continue to appear on the market. Ball bearings from the case in recent decades on highway bridges using seismic grid view WJGZ steel ball bearing products, in addition to the transportation industry standards set forth in species, there have been a number of industry-standard varieties other than those specified, namely The so-called "non-standard" products, these products are in the technical reliability and maturity of the also worth further exploration. Rubber bearings So, here the classification of ball bearings only by the scope of the earthquake transportation industry standards for the level and intensity, the level of the earthquake, the size of the earthquake is represented by the level of earthquake, seismic rubber bearings as 6 , 7.6 earthquake, 7.8 earthquake, 8.9 earthquake, etc., ball bearing type according to the level of seismic energy release on the size of the energy released can be calculated by detecting, the energy released by an earthquake more than a rubber support grade-level seat earthquakes greater the current human record of the highest magnitude earthquake was 8.9, the energy released by the ball bearing is equivalent to an amount of 18 million T explosive hydrogen bomb, or the equivalent of a 100kw power plant electricity 40 years. May 12, 2008 14:28 GMT Wenchuan earthquake of 8 earthquake steel ball bearings, the energy released is roughly equivalent to the amount of 900,000 T explosive hydrogen bomb, or 100kw of power plants for two years the amount. Earthquake magnitude and intensity-type scale to measure indicators, ball bearings earthquake measuring and calculating the level of American seismologists put forward, so that the level in the earthquake Richter formula often say how many earthquake, said ball bearings magnitude earthquake The size of the release of energy. The maximum amplitude of the discipline to the epicenter, more than five earthquakes can cause varying degrees of damage, called the devastating earthquake.