The three-row and four-column slewing bearing is used as the slewing guarantee for large equipment, such as TBM. This particular structure provides an improvement in the bearing capacity, meanwhile, it also has different behaviors compared to conventional roller slewing bearing. In order to pay attention to different roller design parameters and axial clearance for the effect on its roller safety factor, specific analysis tools must be developed. First, this paper presents a set of load distribution and contact stress analytical method based on the actual contact behavior, and FEM is used to a...
