An electric motor driving a fan or ventilation system runs an uninterrupted load all day, so its durability directly shapes the airflow performance of the plant. Continuous duty, vibration and dust set this application apart from an ordinary drive motor. DRG Motor builds industrial motors that turn fan impellers with the same steady torque every revolution and offer long maintenance intervals.

How Fan Load Affects the Motor

Fans have a quadratic torque characteristic: the load torque rises with the square of speed, so the motor needs low starting torque but draws steady, high power at rated speed. For this reason fan drives usually rely on 4-pole 1500 rpm motors, or 6-pole 1000 rpm units where lower air volume is required. Sizing for S1 continuous duty keeps the winding thermally stable without overheating.

Protection Against Dust and Moisture

Inside ducts and flue lines the motor is exposed to a dusty, humid environment. IP55 protection shields the winding against both dust ingress and low-pressure water jets. Class F insulation leaves a safe thermal margin even at high ambient temperatures, extending bearing and coil life.

Frame and Mounting Options

For roof extractors, cased fans and air-handling units we offer B3 foot-mounted, B5 flange-mounted and B14 face-mounted versions. The cast iron frame damps vibration and resists the stress of fan imbalance, while an aluminium frame eases handling in lightweight ceiling-mounted applications.

Choosing the Right Motor for Your Fan System

Correct selection means weighing the fan's volume, pressure and operating hours together. DRG Motor supplies fan motors from 0.55 to 355 kW for 400 V / 50 Hz supply in IE3 and IE4 efficiency classes. From our İzmir-based supply line you can source a motor matched to your plant's airflow demand.