... make the host be an compact design, easy to guide and maintain.Slewing bearings can be nongeared, internal gear ... rotary bearing, ball bearing, crane slewing bearing, slewing bearing for crane, big slewing bearing, large-scale slewing bearing, ferris ... wheel bearings, shield bearing, ladle turret bering, bearing for ladle turret, bearing for shield, bearing on the radar, slewing turnable bearing, ...