An electric motor's rating is expressed in kilowatts (kW), and the torque and speed an application demands set that figure directly. The DRG Motor range spans small drives from 0.55 kW up to heavy-duty units of 355 kW; the same frame logic is kept while winding cross-section, rotor mass and cooling capacity scale with power.

Where Low-kW Motors Are Used

Motors between 0.55 and 7.5 kW drive fans, small pumps, conveyors and dosing systems that need modest torque. An aluminium frame is usually chosen here: it is light, sheds heat quickly and bolts straight to the machine via B5 flange or B14 face mounting. The 4-pole, 1500 rpm option is the most common in this band.

What High-kW Motors Require

Above 30 kW, starting current, shaft diameter and bearing load become decisive. These ratings call for a cast iron frame, a larger terminal box and, in most cases, star-delta or soft starting. Loads such as crushers, large centrifugal pumps and blowers are sized in the 110-355 kW range for continuous S1 duty.

Choosing the Right Power Class

An undersized motor overheats and shortens its own life, while an oversized one loses efficiency at part load. Shaft power, load profile and daily run time must be weighed together. With IE3 and IE4 options across 0.55-355 kW, DRG Motor covers both low and high power needs from a single supplier.

A Wide Power Span from One Supplier

The same drive line may hold both a 1.5 kW feeder and a 90 kW main motor. Sourcing these from one brand, with matching connection dimensions and a shared spare-parts logic, simplifies stock and maintenance. DRG Motor builds small and large ratings under one roof to provide that consistency.