Abstract: A bowl-type vibratory finishing machine is disclosed which employs an extremely simple yet highly effective arrangement of components enabling a relatively low-energy-input drive system to efficiently impart an extraordinarily aggressive finishing action to a mixture of workpieces and finishing media contained within an annular, trough-like finishing chamber defined by a movably supported bowl. The finishing chamber extends substantially horizontally about a substantially vertical center axis. An eccentrically weighted drive shaft extends along the center axis and is journaled by bearings which are connected to the bowl so that, when the drive shaft is rotated, vibrations generated by the unbalanced nature of the drive shaft are transmitted to the bowl and cause the bowl to vibrate generally about a nodal point located along the central axis.