crane slewing ring gear 1.Ranging from 200mm to 4500mm in diameter 2.More than 20 years experiences 3.ISO9001 crane ... slewing ring gear , also called slewing bearing, is a bearing that can bear large axial load, radial load ... , inner teeth, outside teeth, lubricants holes and sealing devices, which enable the main frame structural compact, guide reliable, and easy to maintain.Slewing ...