an apparatus and method for imparting an angularly rotational movement . the apparatus includes a cylinder having an internal portion , a rod operatively positioned within the internal portion of the cylinder , a first bearing operatively positioned about rod ; a second unidirectional bearing operatively positioned about the rod and a motion program for selectively inputting incremental radial motion to the rod . the apparatus may also include a force generator for linearly moving the rod in a linear axial motion along an axis of the cylinder .