玉軸受のグリース潤滑における潤滑寿命の研究（第2報）

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書誌事項

タイトル別名
  • Service Life of Lubricating Grease in Ball Bearings (Part 2)
  • 玉軸受のグリース潤滑における潤滑寿命の研究(第2報)基油の浸透特性にもとづく潤滑寿命の解析
  • タマジクウケ ノ グリース ジュンカツ ニ オケル ジュンカツ ジュミョウ ノ ケンキュウ(ダイ2ホウ)キユ ノ シントウ トクセイ ニ モトズク ジュンカツ ジュミョウ ノ カイセキ
  • ―Analysis of Service Life Based on Infiltration Characteristics of Base Oil―
  • ―基油の浸透特性にもとづく潤滑寿命の解析―

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抄録

<p>The preceding First Report showed that the service life of urea grease in angular contact ball bearings, determined on FAG FE9 rolling bearing grease testers, considerably differed depending on the type of thickeners. Further, it reasoned that insufficient “Feed”of the base oil to the bearing raceway lead to seizure limiting the lubrication life on the basis of the results obtained by tracing infiltration of the base oil through re-distributed grease in the bearing. In order to provide a logical rationale for these findings, the present Second Report analyzes the “Feed”behavior. The equivalent radius characterizing the infiltration rate of the base oil through grease with different thickener concentration is determined on a newly developed test apparatus using paper filter as the medium. A chart is introduced to show the change in the equivalent radius of grease during an operation and the limiting condition leading to the failure is discussed. Finally, the means to make relative comparison of the service life of grease without conducting bearing tests is proposed.</p>

収録刊行物

  • トライボロジスト

    トライボロジスト 66 (2), 159-170, 2021-02-15

    一般社団法人 日本トライボロジー学会

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