A contact fatigue life analysis was performed for a constant ratio, Nasvytis Multiroller Traction Drive. The analysis was based on the Lundberg-Palmgren method for rolling element bearing life prediction. Life adjustment factors for materials, processing, lubrication and traction were included. The 14.7 to 1 ratio drive consisted of a single stage planetary configuration with two rows of stepped planet rollers of five rollers per row, having a roller cluster diameter of approximately 0.21 m, a width of 0.06 m and a weight of 9 kg. Drive system 10 percent life ranged from 18,800 hours at 16.6 kW (22.2 hp) and 25,000 rpm sun roller speed, to 305 hours at maximum operating conditions of 149 kw (200 hp) and 75,000 rpm sun roller speed. The effect of roller diameter and roller center location on life were determined. It was found that an optimum life geometry exists.


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    Titel :

    Life analysis of multiroller planetary traction drive


    Beteiligte:
    Coy, J. J. (Autor:in) / Rohn, D. A. (Autor:in) / Loewenthal, S. H. (Autor:in)

    Erscheinungsdatum :

    01.04.1981


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch


    Schlagwörter :


    Life Analysis of Multiroller Planetary Traction Drive

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    Multiroller Planetary Friction Drives

    Nasvytis, Algirdas L. | SAE Technical Papers | 1966


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    Multiroller traction drive speed reducer. Evaluation for automotive gas turbine engine

    Rohn, D.A. / Anderson, N.E. / Loewenthal, S.H. | Tema Archiv | 1982