Mechanical, electrical and electromechanical power transmission components and bearing products for machines, namely, gears, gear racks, torque limiters, idlers, tighteners, sheaves, bearings, bearing seals, pillow blocks, flange blocks, take-up units, bushings, belts, couplings, drives, sprockets, chains, pulleys, motor bases, set collars, hubs, keystock, speed reducers, AC and DC electric motors not for land vehicles, clutches, clutch brakes, rubber belting, springs, pins, retainer rings and wire for maintaining a uniform air gap in electromagnetic friction clutches and brakes, ball screws, machinery shaft couplings, and locking collars for bearing units