Volume 6, Issue 10 (November 2009)

    Case Depth and Static Capacity of Surface Induction-Hardened Rings

    (Received 19 June 2009; accepted 31 August 2009)

    Published Online: 2009

    CODEN: JAIOAD

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    Abstract

    Large-size slewing bearings are usually surface hardened by means of induction heating. The load-carrying capacity of the bearing is dependent on, among others, the depth of the hardened layer, i.e., case depth (CD). It is of crucial importance for bearing manufacturers to ensure that sufficient CD is produced to meet the required bearing capacity for the applications. Compared to through-hardened bearings, the calculation method for the load-carrying capacity of surface-hardened bearings, especially the induction-hardened bearings, is not well established. This paper reports on a new calculation method for the static capacity of induction-hardened rings. The method is based on consideration of both the plastic indentation on the raceway and the damage tolerance in the subsurface region. The models for evaluating plastic indentation and subsurface damage have been validated with the standing contact fatigue testing.


    Author Information:

    Lai, Junbiao
    Senior Research Engineer, SKF Engineering and Research Centre, Nieuwegein,

    Ovize, Pascal
    RKS S.A., SKF Slewing Bearings, Avallon, Cedex

    Kuijpers, Hans
    Senior Research Engineer, SKF Engineering and Research Centre, Nieuwegein,

    Bacchettto, Andrea
    Senior Research Engineer, SKF Engineering and Research Centre, Nieuwegein,

    Ioannides, Stathis
    SKF Group Technology Development, Nieuwegein,


    Stock #: JAI102630

    ISSN: 1546-962X

    DOI: 10.1520/JAI102630

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    Author
    Title Case Depth and Static Capacity of Surface Induction-Hardened Rings
    Symposium Eighth International Symposium on Bearing Steel Technologies: Developments in Rolling Bearing Steels and Testing, 2009-05-22
    Committee A01