Development of herringbone-grooved aerodynamic journal bearing systems for ultra-high-speed rotations

Norifumi Miyanaga, Jun Tomioka

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

It is absolutely important for ultra-compact rotational machineries to achieve sable shaft rotation at ultra-high-speed. This paper discussed herringbone-grooved aerodynamic journal bearing systems developed for the purpose. In this system, the bearings are supported by rubber-O-rings for accurate and stable operations. To grasp the possibility for stabilization, two types of O-rings with different stiffness and damping properties under bearing supporting were tested in the experiment. As the results, the bearing system demonstrated the maximum rotational speed over 460,000 rpm without unstable phenomenon called whirl. However, the difference in rubber O-rings definitely affected the stability of the bearing system.

Original languageEnglish
Title of host publicationRecent Development in Machining, Materials and Mechanical Technologies
PublisherTrans Tech Publications Ltd
Pages652-657
Number of pages6
Volume656-657
ISBN (Print)9783038354956
DOIs
Publication statusPublished - 2015
Externally publishedYes
EventInternational Conference on Machining, Materials and Mechanical Technologies, IC3MT 2014 - Taipei City, Taiwan, Province of China
Duration: 2014 Aug 312014 Sep 5

Publication series

NameKey Engineering Materials
Volume656-657
ISSN (Print)10139826

Other

OtherInternational Conference on Machining, Materials and Mechanical Technologies, IC3MT 2014
CountryTaiwan, Province of China
CityTaipei City
Period14/8/3114/9/5

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Keywords

  • Aerodynamic bearings
  • Herringbone-grooved bearings
  • Precision rotations
  • Ultra-high-speed rotations
  • Viscoelastic supports

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Miyanaga, N., & Tomioka, J. (2015). Development of herringbone-grooved aerodynamic journal bearing systems for ultra-high-speed rotations. In Recent Development in Machining, Materials and Mechanical Technologies (Vol. 656-657, pp. 652-657). (Key Engineering Materials; Vol. 656-657). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/KEM.656-657.652