SLEWING TYPE CONSTRUCTION MACHINE

摘要

PROBLEM TO BE SOLVED: To decrease an oil amount of lubricating oil stored in a grease bath, reduce the total weight including the grease bath, and improve durability and longevity. SOLUTION: An annular cutout step part 48 located under an internal gear 47 is formed on an inner ring 42 of a slewing ring 41. Stopper plates 56 are fixed on an inner periphery side of a round drum 8 by welding. When a bottom plate 51 of a grease bath 50 is positioned to the inner ring 42, an outer periphery edge part 51A of the bottom plate 51 is held between a lower surface of the cutout step part 48 and stopper plates 56. Furthermore, a lubricating oil storage space 53 for supplying lubricating oil G such as grease to a pinion 26 and the internal gear 47 is formed between a cylindrical plate 52 stood upward from an inner periphery edge part 51B of the bottom plate 51 and the inner ring 42.