High Efficiency Electric Motors from 0.55 kW to 355 kW - DRG MOTOR, are motors offered in a wide range suitable for different power (kW) needs. Selecting the correct power step is critical for efficient operation, long life and energy savings.

Choosing the Right Power Step

Two mistakes cost money in opposite directions. A motor chosen well above the load runs at part load, where efficiency and power factor both fall; a motor chosen below the load heats up, and the winding pays for it long before the bearings do. The step that matches the load with a small reserve is the cheapest one over the life of the machine.

Where the 0.55–355 kW Band Is Used

The low end of the band feeds small pumps, mixers and fans; the middle sits under conveyors and compressors; the top steps go to crushers, large fans and pump stations. One plant usually orders from three different points of the same band, which is why the whole range is kept as one series.

Torque Comes from the Pole Count

At the same kW, a 6-pole motor delivers roughly three times the torque of a 2-pole one, because torque rises as speed falls. So the question is never only how many kW: a conveyor and a high-pressure pump may share a power step and still need different pole counts.

What Is Measured Before Shipment

Four measurements decide whether a motor leaves the line: insulation resistance, vibration and balance, efficiency with cosφ, and behaviour under load. The balance figure matters most in the 2-pole steps, where a small unbalance turns into visible vibration at 3000 rpm. A unit outside limits goes back, not out.

Narrowing Down the Step

If the machine already runs, its nameplate answers most of the question: power, speed, mounting and insulation class. Our electric motor power and speed options page sets out which combinations exist, and the remaining gap we close over the application details.

Ordering a Power Step from Stock

The frequently ordered steps between 0.55 kW and 355 kW, in IE3, IE4 and IE5, sit in the İzmir warehouse rather than in a production queue, so a replacement usually waits for transport only. Selection support before the order and technical support after it come from the same desk. Regional contacts are listed on our electric motor dealers page.

Frequently Asked Questions

How is the required power worked out?

Start from the driven machine: the load it presents, the torque it needs at start-up and the hours it runs per day. Those three numbers give the power, and our technical team turns them into a kW and speed pair.

Can auxiliary and main drives come from one order?

They can: 0.55 kW fan motors and 355 kW main drives belong to the same range, with the pole count and mounting chosen per position. Ordering them together keeps one delivery date and one spare parts list.