This paper investigates and describes the fatigue mechanism in bearings for automotive alternators. The authors have analyzed the peculiar microstructure change found in these bearings. They have also investigated the effects of grease properties, vibration, and elastic deformation of the outer ring. By analyzing the bearings used in actual engine tests and grease tests for fundamental characteristics, the authors were able to conclude that the fatigue causes were two-fold: load amplification caused by resonance and high bending stresses caused by elastic deformation of the outer ring. As a practical result, the authors able to adopt a newly formulated grease which decreased the vibration level and the peak rolling element load. This led to the development of longer life bearings for automotive alternators.


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    Title :

    Long life bearings for automotive alternator applications


    Additional title:

    Lager mit hoher Standzeit für Drehstromlichtmaschinen im Automobilbereich


    Contributors:
    Murakami, Y. (author) / Naka, M. (author) / Iwamoto, A. (author) / Chatell, G. (author)

    Published in:

    Publication date :

    1995


    Size :

    14 Seiten, 20 Bilder, 5 Tabellen, 9 Quellen



    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Long Life Bearings for Automotive Alternator Applications

    Iwamoto, Akira / Chatell, Gary / Naka, Michiharu et al. | SAE Technical Papers | 1995


    Long life bearings for automotive alternator applications

    Murakami,Y. / Naka,M. / Iwamoto,A. et al. | Automotive engineering | 1995


    Long Life Bearings for Automotive Alternator Applications

    Murakami, Y. / Naka, M. / Iwamoto, A. et al. | British Library Conference Proceedings | 1995


    RECTIFIERS FOR AUTOMOTIVE ALTERNATOR SYSTEMS

    WELTY, J. R. | SAE Technical Papers | 1961