Four point contact ball slewing bearing  is composed of 2 seat rings . It features compact in design , and light in weight . The balls with the circular race at four points , via which the axial force , radial force and resultant moment may be born at the same time . Application  : widely used for slewing conveyers , concrete machinery , light and heavy duty cranes , excavators and other engineering machinery . Dimension   : Inner diameter : 398mm-4272mm , outer diameter : 602mm-4726mm Weight : 75.8Kg _ 4000 Kg We supply good quality  Four point contact ball slewing ring , bearings , swing bearing / drive , slewing . Check more detail information about  Four point contact ball slewing ring , bearings , swing bearing / drive , slewing , please feel free to contact us!

Xuzhou Xinda Slewing Bearing Co., Ltd is a comprehensive manufacture , specializing in producing designing and R & D the slewing bearings . We have first-rate facilities , large production capacity , excellent engineers and technicians , modern production plant and complete testing equipments , and have reached the high industry level by our comprehensive strength , which located in Xuzhou --- the China Construction Machinery Base .

Meanwhile , our company has passed ISO9001-2000 Quality System Certification and won lots of hornor at home and abroad by high precison , long life , excellent quality , reasonable price and perfect after-sales services . Our main markets are covering with more than 30 countries and areas in Asia , Europe , the Americas and so on .