Evolution instead of revolution

Groschopp DC motors are characterized by their high quality and long service life. Their robust design and repairability make them ideal for use in demanding environments. The drive specialist can look back on a company history spanning over 75 years and has cross-industry know-how and extensive experience in drive technology. This enables the company to adapt its DC motors precisely to the requirements of a wide variety of applications.

"We offer a wide range of electrically excited DC motors," explains Christian Skaletz, project manager at Groschopp AG Drives & More in Viersen. "We differentiate between different types."

Series-wound motors

In series-wound motors, the armature and excitation windings are connected in series. They are characterized by high torque at low speeds and can be operated with both direct and alternating current. Series-wound motors are used in applications where either high starting torques and/or high speeds are required - for example in medium-voltage switches or mixers.

Shunt-wound motors

In shunt-wound motors, the armature and excitation windings are connected in parallel. They are speed-stiff, which means that their speed remains almost constant even with changing loads. Shunt-wound motors are advantageous in applications where very precise but simple control of the speed is important - for example in belt drives or in medical technology.

Double-wound motors

Double-wound motors are also known as compound motors. They combine the properties of series-wound and shunt-wound motors, as they have both a series-wound and a shunt-wound winding. Double-wound motors are used in conveyor technology when speed stiffness is not the main priority, but a high starting torque is required.

Permanent magnet DC motors

"In addition to the electrically excited version, we also offer magnetically excited motors, so-called permanent magnet DC motors," explains Skaletz. "Here, magnets are used to generate the excitation field, which makes them particularly energy efficient." PMDC motors offer a stable speed under load, but are sensitive in overload situations. They are suitable for mobile or medical applications, for example.

Available as a built-in or housing motor

Groschopp offers DC motors with housing (KG) or as built-in motors (KE). The motors in the KE series are very robust. They can be massively overloaded for a short time and are therefore used in power earthing switches or tensioning devices for strapping, among other things. The company is constantly developing its commutator motor technology - the wishes of its customers form the starting point for this. "This is more about evolution than revolution," concludes Skaletz. "Currently, the focus is primarily on increasing demands on the efficiency, durability and controllability of the drives."