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    Volume 44, Issue 4 (July 2016)

    Effect of Bushing Miniaturization on the Static Friction Coefficient

    (Received 10 July 2014; accepted 7 January 2015)

    Published Online: 2016

    CODEN: JTEVAB

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    Abstract

    As machines become smaller, friction plays an increasingly important role in their performance. Although friction is a well-studied phenomenon, few studies have been performed on bushings and shafts with loads of a few tens of mN and dimensions of a few mm. In this work, the static friction coefficient is investigated for a miniature steel shaft rotating in bronze SAE 40 bushings. A new approach is presented to measure the static friction coefficient of a miniature bushing. The coefficient was evaluated without lubrication. It shows a linear dependence at loads higher than 152 mN and a nonlinear dependence at loads smaller than 152 mN.


    Author Information:

    Olvera-Tapia, Omar
    Centro de Ciencias Aplicadas y Desarrollo Tecnológico, Universidad Nacional Autónoma de México, Circuito Exterior S/N, Ciudad Universitaria, México D. F.,

    Kussul, Ernst
    Centro de Ciencias Aplicadas y Desarrollo Tecnológico, Universidad Nacional Autónoma de México, Circuito Exterior S/N, Ciudad Universitaria, México D. F.,

    Rodríguez-Lelis, José M.
    National Center of Research and Technological Development Interior Internado Palmira S/N, Palmira Cuernavaca, Morelos,

    Baidyk, Tatiana
    Centro de Ciencias Aplicadas y Desarrollo Tecnológico, Universidad Nacional Autónoma de México, Circuito Exterior S/N, Ciudad Universitaria, México D. F.,

    Sanchez, José
    Centro de Ciencias Aplicadas y Desarrollo Tecnológico, Universidad Nacional Autónoma de México, Circuito Exterior S/N, Ciudad Universitaria, México D. F.,


    Stock #: JTE20140284

    ISSN:0090-3973

    DOI: 10.1520/JTE20140284

    Author
    Title Effect of Bushing Miniaturization on the Static Friction Coefficient
    Symposium ,
    Committee G02