... of bearing ball-raceway, and accordingly presents a novel comprehensive contact heat transfer model coupling the thermal dissipation of oil film and the relative motions of bearing ball-oil film-raceway as well. Design/methodology/approach The Hertz contact of ball-raceway was first analyzed, and how...

... of pivot point is non-conical and has a hyperbolic or cylindrical geometric structure. Design/methodology/approach First, according to the Hertz contact theory, considering the nonlinear effects, the deformation of the pivot point and the shape parameters of the contact area under the bearing force...