New designs of magnetic fluid exclusion seals for rolling bearings

Abstract

Purpose -To present some new designs of magnetic fluid exclusion seals for rolling bearings and possibility to use them in modern industrial sealing applications. Design/methodology/approach -In the paper is given principle of magnetic fluid sealing technology and are presented new designs of magnetic fluid exclusion seals for rolling bearings, such as compact magnetic fluid seals, two-stages seals being combination of magnetic fluid seal and labyrinth seal or radial lip seal, magnetic fluid seals with "floating" magnetic system. This paper also shows examples of their application in various rotating process equipment. Findings -Provides information about new designs of bearing seals and gives the main advantages of these seals over other types, such as total tightness, low viscous drag, maintenance-free service and high reliability. Originality/value -This paper offers some new designs of high-performance magnetic fluid exclusion seals for rolling bearings and points their practical applications.

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