Gearboxes, Motors and Drives Various technologies are available to transmit power in a cooling tower, including gear drives, belt drives and direct drives. Determine the right technology for your application by balancing initial and operating costs. Geareducer® - Single Reduction Geareducer® - Double Reduction Geareducer® - M Series Cooling Tower Duty Motor Belt Drive Fan System Permanent Magnet Direct Drive Fan Motor Electronic Commutated (EC) Motor Sprag Clutch Backstop Disc Anti Reversing Device