Misalignment-induced macro-elastohydrodynamic lubrication in rotary lip seals

F. X. Borras*, M.B. de Rooij, D. J. Schipper

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

1 Citation (Scopus)
18 Downloads (Pure)

Abstract

Typically, film formation in a rotary lip seal is explained by microscopic effects, but here it will be explained from a macroscopic point of view. When the nominal parallelism between the shaft and the seal is lost, the contact area is distorted leading to a skewed sealing profile. The resultant slanted gap between the shaft and the seal presents a macroscopic wedge profile in the direction of rotation, hence constituting a source of hydrodynamics. An elastohydrodynamic model is developed predicting the implications of operating a rotary lip seal under misalignment. It is concluded that the non-concentric operation of rotary lip seals leads to a bidirectional fluid migration from the back to the spring side of the seal and vice versa.

Original languageEnglish
Article number106479
JournalTribology international
Volume151
DOIs
Publication statusPublished - Nov 2020

Keywords

  • UT-Hybrid-D
  • Film thickness
  • Lip seal
  • Lubrication
  • Marine
  • Misalignment
  • Rotary
  • Soft
  • Stern tube seal
  • Elastohydrodynamic

Fingerprint

Dive into the research topics of 'Misalignment-induced macro-elastohydrodynamic lubrication in rotary lip seals'. Together they form a unique fingerprint.

Cite this