The hydrodynamic characteristics which produce inward pumping in mechanical face seals are studied. Solutions to Reynolds’ equation for hydrodynamic lubrication are obtained using both the short-bearing approximation and numerical iterative methods. It is found that pumping in face seals results from combined radial eccentricity and misalignment, or one circumferential surface wave. Experimental results confirm the theory.
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Inward Pumping in Mechanical Face Seals
J. A. Findlay
Research and Development Center, General Electric Company, Schenectady, N. Y.
Findlay, J. A. (July 1, 1969). "Inward Pumping in Mechanical Face Seals." ASME. J. of Lubrication Tech. July 1969; 91(3): 417–425. https://doi.org/10.1115/1.3554952
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