four point contact ball slewing , slewing , slewing ring bearing

タイトルまたは説明

Single row four point contact ball slewing ring is composed of two seat rings . It features compacts in design , and light in weight . The ball contact with the circular race at four points , via which the axial force and resultant moment may be born simultaneously . It may be used for slewing conveyers , welding arm and positioner , light , medium duty crane , excavtors and other engineering machines .