Abstract: The paper starts with a brief description of the history of the spiral-groove bearing. All previous authors based their considerations on a recurrent pattern of parallel straight grooves, for ...

Abstract: The correlation between mechanical stresses and tribological behavior for thin films was studied. A noble metal layer was applied on different substrates. Depending on the thickness of the film ...

Abstract: This paper aims at a theoretical explanation of the following two experimental observations of radial lip seals: fluid film formation and upstream pumping action. The origins of these observations ...