The cast iron IE4 motor combines one of the highest efficiency levels, IE4 Super Premium, with the mechanical strength of a cast iron frame in a single product. This pairing is designed for plants seeking a drive that both minimises energy losses and resists the vibration and impact of a heavy-industry environment. DRG Motor supplies motors that bring these two qualities together.

The Advantage of the IE4 Efficiency Class

In the IEC 60034-30-1 standard, IE4 Super Premium defines an efficiency threshold above even IE3 Premium. It produces the same shaft power on the same 400 V / 50 Hz supply with fewer losses, which means less winding heating and lower consumption over long running hours.

The Role of the Cast Iron Frame

A cast iron frame is heavier than aluminium but far more rigid. It damps vibration, withstands mechanical shock and dissipates heat steadily. This extends the motor's life in demanding applications such as crushers, compressors and heavy conveyors.

Technical Build and Protection

IE4 cast iron motors are offered in 2-, 4- and 6-pole versions, giving 3000, 1500 and 1000 rpm respectively. IP55 protection guards against dust and moisture, while Class F insulation provides a safe margin at high temperatures. B3 foot and B5 flange mountings are available.

Choosing IE4 for Heavy Duty

For long-hour, demanding applications that need high efficiency and a rugged frame together, the cast iron IE4 motor is the right choice. From its İzmir-based supply, DRG Motor supplies these motors from 0.55 to 355 kW; we can define together the power matched to your plant's load profile.