A methodology to design an air-lubricated piston seal for pneumatic actuators is described. Such a seal permits a small air leakage through a very narrow gap between the seal lip and the counterpart; this air film both avoids contact and ensures lubrication at the seal-counterpart interface thus permitting reduced friction and wear. Subsequently the use of grease could be limited or avoided. A seal geometry equipped with a self-pressurized balancing chamber was designed to make leakage as insensitive as possible to the supply pressure and to the barrel machining tolerances. A prototype was manufactured and tests were carried out.

Design methodology for an air-lubricated seal / Belforte, Guido; Mazza, Luigi; Visconte, Carmen. - In: TRIBOLOGY INTERNATIONAL. - ISSN 0301-679X. - STAMPA. - 75:(2014), pp. 104-110. [10.1016/j.triboint.2014.03.017]

Design methodology for an air-lubricated seal

BELFORTE, GUIDO;MAZZA, Luigi;VISCONTE, Carmen
2014

Abstract

A methodology to design an air-lubricated piston seal for pneumatic actuators is described. Such a seal permits a small air leakage through a very narrow gap between the seal lip and the counterpart; this air film both avoids contact and ensures lubrication at the seal-counterpart interface thus permitting reduced friction and wear. Subsequently the use of grease could be limited or avoided. A seal geometry equipped with a self-pressurized balancing chamber was designed to make leakage as insensitive as possible to the supply pressure and to the barrel machining tolerances. A prototype was manufactured and tests were carried out.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/2543367
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