Surface Microrelief as a Factor in the Performance of Cuff Seals and Methods of its Formation during Finishing Processes

This article examines the role of surface microrelief in the performance of friction pairs between a shaft journal and a lip seal. The focus is on fi nishing methods for metal surfaces to form a regular microrelief to ensure stable oil fi lm retention and increase seal durability. The interaction of friction pair components is analyzed, taking into account the geometry and direction of microroughness. Machining methods (grinding, smoothing, and vibration smoothing) and their infl uence on microrelief formation were studied. Recommendations for selecting machining methods for reliable operation of sealing assemblies were developed. The proposed solutions signifi cantly increase the service life of polymer and rubber seals by optimizing the surface microgeometry. The results are applicable to the design and manufacture of mechanisms with metal-polymer and metal-rubber friction pairs under partially lubricated surfaces.