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Externally Pressurized Gas Journal Bearing with Slot Restrictors Arranged in the Axial Direction (Experimental Verification of Bearing Stiffness using Large Unbalanced Rotor)

  • Tomohiko IseEmail author
  • Kohei Nagao
  • Masami Matsubara
  • Shozo Kawamura
  • Tomoya Kinugawa
  • Shinya Kikutani
  • Masaya Kurokawa
Conference paper
Part of the Mechanisms and Machine Science book series (Mechan. Machine Science, volume 73)

Abstract

In this study, new rectangular slot restriction-type externally pressurized gas journal bearing has been developed for use in high-speed rotating machinery. The proposed bearing has several rectangular slot restrictors arranged in the inner sur-face of the bearing. This restrictors has high stiffness for couple of force. The material of the prototype bearing was PPS (Poly Phenylene Sulfide) resin, the machining accuracy (roundness) of the bearing was improved. Experimental verification using large unbalanced rotor was carried out. Unbalance to the rotor was set to generate vibration in cylindrical mode and conical mode. The rotational speed is 11,000rpm. The bearing diameter and length are 30mm and 40mm, respectively. As a result, it was clarified that the proposed bearings have smaller rotor vibration and improved rigidity than the conventional type.

Keywords

Externally pressurized gas bearing Journal bearing Pressure distribution Load capacity Rotor vibration 

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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Tomohiko Ise
    • 1
    Email author
  • Kohei Nagao
    • 2
  • Masami Matsubara
    • 2
  • Shozo Kawamura
    • 2
  • Tomoya Kinugawa
    • 3
  • Shinya Kikutani
    • 3
  • Masaya Kurokawa
    • 3
  1. 1.Kindai UniversityOsakaJapan
  2. 2.Toyohashi University of TechnologyToyohashiJapan
  3. 3.Starlite Co., LtdKamitoyama, RittoJapan

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