回转支承是一类由内外圈、滚道和滚动体所构成的,并且设有齿轮、孔眼、油路和密封设施,能够同时承受轴向力、径向力和倾覆力矩的组合轴承,是各种机构设备特别是工程机械的基础部件。本文试论一种正方形滚道球式回转支承的结构和优势,试图以环状正方形滚道取代传统的环状圆筒形滚道。 Slewing bearings are a group consisting of inner and outer rings, raceways and rolling elements, and equipped with gears, eyelets, oil passages and sealing facilities that can simultaneously bear axial forces, radial forces and overturning moments, Species equipment, especially the basic components of construction machinery. This paper discusses the structure and advantages of a square ball bearing slewing ring, trying to replace the traditional circular cylindrical raceway with a ring-shaped square raceway.