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A Friction-Reducing Shaft Surface for Use With Standard Radial Sharp Lip Oil Seals
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English
Abstract
In the use of radial lip-type oil seals to seal against a rotating shaft, the surface characteristics of the shaft are important to the sealing and to the resultant seal/shaft friction. A plunge ground shaft surface with no lead has long been the recommended mating surface for a radial lip-type oil seal. Recently, however, a peened surface was studied which will reduce frictional torques a maximum of 50%, 60%, and 70% below that of one utilizing a plunge ground shaft surface for silicone, nitrile and polyacrylate seal materials, respectively. Seal performance from a leakage standpoint for standard sharp lip seals exceeds that of the plunge ground surface. However, the preliminary results indicate that the surface is not suitable with hydrodynamic shaft seals. Some insight into elastomeric friction was obtained from the tests. Surface characteristics which were shown to be important from a friction standpoint were asperity spacing (roughness width), asperity radius of curvature and asperity angle. The process was also shown to eliminate grinding lead on the shaft.
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Authors
Citation
Symons, J., "A Friction-Reducing Shaft Surface for Use With Standard Radial Sharp Lip Oil Seals," SAE Technical Paper 810201, 1981, https://doi.org/10.4271/810201.Also In
References
- Symons James D. “The Shaft and Radial Lip Seal Performance,” Proceedings of the International Conference on Surface Technology Society of Manufacturing Engineers May 1973 584 605
- Van Deven D. “Shaft Surface Processing Versus Seal Performance,” Proceedings of Seal Symposium GMR Publication #532 September 30, 1965 100 114
- Gujrati B. D. “The Frictional Dynamics of Lubricated Elastomers in Contact with Regularly Spaced Sliders,” The American Society of Mechanical Engineers, Paper No. 77-Lub-34
- Gujrati B. D. Ludema K. C. “Viscoelastohydrodynamics: Lubricated Elastomeric Contacts,” American Chemical Society International Symposium on Advances in Polymer Friction and Wear Los Angeles, Calif. April, 1974 Advances in Polymer Friction and Wear Lee Lieng-Huang New York 1974