Vibrator motors are robust, highly stable under load, having cylindrical roller Bearings Vibration resistant, high quality resin impregnated windings. End Shield fitted with rubber 0 rings to give dust tight and watertight enclosure. Quite running and require no maintenance. Robust terminal board, cable wire cast in vibration resistant synthetic resin. Reliable high torque starting, Absolutely secure fixing of our of balance weights only the inner weights are adjustable, with legible markings on the weights.