The real cost of an electric motor goes far beyond the price on the label. Most of the lifetime cost is made up of energy consumption and maintenance expense, so a low-maintenance motor is more economical in the long run even if it is slightly more expensive at the outset.

What Drives Maintenance Cost

Asynchronous motors have few wearing parts; there are no brushes or commutator, so periodic part replacement is largely limited to the bearings. A re-greasable bearing design allows the motor to be serviced on site without dismantling.

How Design Affects the Service Interval

A large-surface cast iron housing and a correctly sized fan keep the winding temperature low, extending the life of the insulation and the bearing grease. Class F insulation and IP55 protection reduce the frequency of faults in dusty and damp environments.

Total Cost of Ownership

The energy a motor consumes over its life far exceeds its purchase price. The IE3 Premium efficiency class delivers low energy expense and a rugged mechanical design delivers low maintenance expense; together they pull down the total cost of ownership.

Choosing a Low-Maintenance DRG Motor

DRG Motor supplies motors from 0.55 to 355 kW with re-greasable bearings, a cast iron housing and IP55 protection for long service intervals. Consult our technical team for the lowest-maintenance configuration for your plant's load profile.