INCREASING THE WEAR RESISTANCE OF RADIAL BEARINGS WITH NON-CIRCULAR PROFILE AND COMPOSITE FLUOROPLASTIC POLYMER COATING

Abstract

The study objective is to find out the regularities of a stable hydrodynamic regime. The paper is devoted to the analysis of a model of a radial sliding bearing with a profile adapted to friction conditions, which also has a polymer coating with a groove on the support. Research methods: there are proposed new models describing the movement of the lubricant in the approximation of a "thin layer", the continuity equation taking into account the dependence of viscosity on pressure. The novelty of the work is in the development of a methodology for engineering calculations of the bearing structure with a polymer coating, a groove and an adapted profile. As a result of the study, a significant expansion of the possibilities is achieved to apply in practice the calculation models of a radial sliding bearing with a polymer coating and operating in a hydrodynamic lubrication mode. Conclusions: the design of a radial bearing with a polymer coating and a groove 3 mm wide, as well as adapted to the loading conditions of the support surface with a profile provide a stable shaft lift-up on a hydrodynamic wedge.