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Turn table(swivel bolster) with slewing ring is a new type of slewing product, which is usually composed of slewing ring, shell, hydraulic and other components. Because the core parts are slew bearings, they can bear axial force, radial force and overturning moment at the same time. Compared with the traditional Turn table(swivel bolster), the rotary drive is easy to install and maintain. This product can be widely used in heavy transportation, bridge construction and other super construction transportation.