Slewing bearing widely used in lifting machinery.excavate machinery,construction machinery,port machinery,ships machinery,as well as precision radar launchers and large rotary devices such as missile launcher. Xuzhou Xinda Slewing bearing was founded in 2008, we have our own factory.Now it is one professional bearing enterprise with R & D, designing, manufacturing, inspecting, storing and trading for various bearings.We have advanced CNC production equipment and the complete set of precision inspection devices, passed the ISO9001 international certification , built a professional, honest, efficient team, in the industry enjoyed a good reputation. Xinda is committed to brand building, production of high quality,costeffective products, provide perfect service. Our company has advanced equipment and technology, as well as a good production management team, invite sincerely each manufacturer and dealer cooperation, create a better future.Slewing ring bearing(slewing ring),is a bearing that able to bear a large axial load,radial and overturning torque.Slewing rings are generally accompanied with installing holes,inner gear,outside gear,lubricating hole and sealing device,which enable mainframe structure compact in design,guide reliable,and easy to maintain. Slewing bearings are combination structure including non-gear,outside gear and four point contact ball bearings,double angular contact ball bearings.cross-cylindrical roller bearing and three rows cylindrical roller bearings and so on.In which,four point contact ball bearings have higher static load capacity,while corss-cylindrical roller bearings have higher dynamic load capacity. Slewing bearings has may international general models and best-selling models,for example: