... generator,Marine Crane,Offshore Crane,Harbor mobile crane,Ferris wheel,stacker,Unloader,Construction Machinery,Ladle turret,shield machine,radar,and ... roller slewing bearings to withstand high overturning moment.5. stacker-reclaimerSlewing bearing stacker-reclaimer usually use is ball column combined type, ... contact slewing bearing double row angular contact ball slewing drive bearing|ball bearings