Abstract
A vibratory actuator (22) includes a housing (62), a rotatable shaft, (78) extending through the housing, and an eccentric member (80) to which the shaft is secured. Vibration is effected upon rotation of the eccentric member (80) by the shaft (78). A hydrodynamic fluid film gap is provided between a partial cylindrical journal surface of the eccentric member (80) and a full cylindrical bearing surface of the housing (62), and the housing contains hydrodynamic fluid. Radial loading between the housing (62), shaft (78) and eccentric member (80) is more uniformly distributed to reduce structural deflections and thus facilitate maintenance of the proper film of hydrodynamic fluid during operation of the actuator (22). If desired, the fluid can be circulated through the housing (62) for cooling purposes.
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