Novel “offset” designs offer greatly improved durability and reduced power loss in applications for which conventional journal bearings are only marginally satisfactory. They are particularly attractive for duty cycles which combine nonreversing loading with limited angular oscillation. Production applications presently include piston-pin / cross-head bearings for two-stroke Diesel engines. The present analysis combines impedance concepts with a generalized short bearing film model for partial arc bearings. A numerical example compares performance of offset and conventional designs for a specific application.

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