Smoke extraction motors are high-temperature fan motors built to expel hot smoke and combustion gases from a building during a fire. DRG Motor supplies dedicated series for this duty, featuring F-class insulation and reinforced bearings that keep running at elevated temperatures for a defined period.

What Is a Smoke Extraction Motor?

Unlike a standard industrial motor, a smoke extraction motor is certified to operate without failure for a set time under fire conditions, for example with gas temperatures around 300 degrees. The winding insulation, terminal box material and bearing grease are all selected for heat resistance; the frame is usually cast iron with IP55 protection.

Role in Roof and Duct Fans

In car parks, shopping centres, tunnels and production halls, smoke extraction fans clear escape routes of smoke and toxic gases during a fire. DRG smoke extraction motors are used in roof-mounted axial fans through to in-duct jet fans, available as 4-pole and 6-pole versions running at 1500 rpm and 1000 rpm.

Technical Features of DRG Motors

The DRG smoke extraction range is built for the 400 V / 50 Hz supply, from 0.55 kW up to high power ratings. F-class insulation, S1 continuous duty and optional high-temperature certified variants are available. The cast iron frame damps vibration, keeping fan blades balanced and extending bearing life.

Choosing the Right Smoke Extraction Motor

Motor selection in a smoke extraction system depends on the fan's airflow, pressure demand and the building's fire scenario. As an Izmir-based supplier, DRG Motor offers project-specific power, pole count and mounting type (B3 foot-mounted or B5 flange-mounted); contact us for the right model and a quotation for your application.