Due to elastic ball bearing with good deformation and cushioning properties, so there is a certain seismic rubber bearing performance and better shock absorption cushioning effect, but the design of the research on the rubber bearing a late start, it can be said is just beginning to affect shear properties and stiffness of errors especially for ball bearing brought by pulling state of durability, fatigue resistance, rubber bearings and steel plate bonding durability, rubber protective layer weather resistance, etc. are subject to further study these problems in the future can do a lot more work. Currently, depending on the type of classification, rubber bearings can be summarized as laminated rubber bearings, damping and isolation bearing (LRB) and the rubber bearing, the chapter narrative form by rubber bearings, respectively. Laminated rubber bearings is not a new product, and it is the child in the 1930s started to develop abroad, has been 70 years of history, we can say that a relatively mature products in foreign countries, rubber bearing rubber engineering Mr. sector authorities E.GKimrnich coefficients of different shapes, different rubber hardness specimens were thousands of times of stress - strain experiments, the first application of laminated rubber bearings on the outskirts of the French Sainfpenis station bridge, to the 1960s Ball bearing enhance product quality supervision is a very important task, by a nationally recognized testing unit to strengthen the authority of the laminated rubber bearing product quality testing room very necessary spherical steel bearing supply manufacturers, but encountered some last layer detection units, testing equipment itself is not complete, the ball bearing detection methods are not familiar with, rubber bearing testing personnel untrained, affecting the test results, so that when this amendment industry standards, in order to facilitate the application of steel supports, the original " Highway bridge the mechanical properties of the finished laminated rubber bearings detection rules "(JT3132.3-90) as" roads and bridges laminated rubber bearings "(JT / T 4-2004) standard normative appendix directly included, its contents , on the basis of practical application, and to consider appropriate adjustments were made to add standards in order to better control the quality of products, determine product strengths and weaknesses. In the standard, first testing equipment, testing instruments, testing personnel made better requirements. Ball bearing some laboratories, it is not for the press as a ball bearing mechanical testing and design, there are a lot of press in the 20th century, 60,70 obsolete equipment. Ball bearings in many places can not guarantee the accuracy of the mechanical properties of the test seat. So with the progress of time, a lot of things behind must be updated in order to reduce unnecessary equipment behind boiled misjudgment occurred during the test, in the past there have been a result of the press, under the bearing thickness is too thin, not stiff enough steel basin seat prices, test their structural deformation of the circumstances test, in addition to steel ball bearing manufacturers, ball bearing bearing plate plane size is too small, spherical bearings size has exceeded the carrying board inch, resulting in local stress affect the validity of the test results. Steel ball bearing manufacturers | Buy holder to Hengshui Hao Tong (certified) | steel bearings supplied by Engineering Rubber Co., Ltd. Hengshui HaoTong. Hengshui HaoTong Engineering Rubber Co., Ltd. (www.htgcxj.com) in the field of construction materials at the site devoted boundless enthusiasm and passion, Hao-engineering rubber has been customer-centric, the concept of creating value for customers, quality, service to win the market, and sincerely hope to cooperate with the community to create a successful, create brilliant. Related businesses welcomed the inquiry, Contact: Liu.