Vibrator motors are A.C asynchronous motors with shaft extensions on both sides. Swing segments are mounted on both sides symmetrically. Mass setting of segment can be infinitely adjustable from zero to maximum. One U/B motor produces omni-directional centrifugal force and two U/B motors mounted together and rotating in opposite direction(must case)synchronize with one another to generate a directional force. These are grease lubricated and simple to maintain.













