... . "10.applicationwind generator,Marine Crane,Offshore Crane,Harbor mobile crane,Ferris wheel,stacker,Unloader,Construction Machinery,Ladle turret, ... Wind generatorTower and yaw bearings are installed in the junction of tower and the cockpit; pitch bearings are installed in each ... three-row roller inner gear slewing bearing.4. Port mobile cranePort cranes usually use internal or external gear, 4 ...