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    Friction Characteristics of Plastic Plain Bearings at Low Velocity

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    A study was conducted to compare the friction characteristics of ball bushings and plastic plain bearings for a low-speed mechanical drive. The goal was freedom from stick-slip behavior.

    Laboratory tests were conducted to measure the static and kinetic coefficient of friction of 12 bushing/shaft couples. The test results indicated that the most consistent friction characteristics were obtained with bushings made from oil-impregnated ultrahigh molecular weight polyethylene sliding on a hardened steel shaft with a surface roughness of 0.2μm Ra. The variability of the friction force is proposed as the parameter to be measured when freedom from stick-slip behavior is the system goal.


    friction, coefficient of friction, plastic bearings, plain bearings, ball bushings

    Author Information:

    Budinski, KG

    Committee/Subcommittee: G02.50

    DOI: 10.1520/STP15962S