Low-speed & high-torque motors

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Low-speed & high-torque motors

LSHT motors transmit a large amount of power from a comparatively small drive envelope. Low noise and vibration and high energy efficiency can be additional benefits.

These motors exhibit good starting efficiencies and constant torque over their entire speed range.

A high-torque motor is a multi-pole electric direct drive with very high torque. Compared to a motor-transmission combination, a high-torque motor can increase productivity of the machine while simultaneously reducing operating/energy costs

The torque spectrum starts at 10 Nm and extends to a peak torque of 500 Nm

The multipole motor already has a very high-power density and thus has a very compact build. In addition, the drive consists of just two parts, rotor and stator, and there are no transmission elements. The motor has a dynamic startup performance and can quickly accelerate to the optimal output for the application. Hydraulic systems, with comparatively high lifecycle costs, lower system efficiency and higher heat development, incur significantly higher lifecycle costs. The speed and torque can be specifically controlled in the system.

The direct drive system is virtually oil free; the motor has a very long service life, and the lack of components means less susceptibility to faults. The second advantage in considering the lifecycle costs is the lower energy use. Here the direct drive can also excel over the gear motor, since first, the friction losses are lower, and second, it has a higher efficiency in the partial load range at a constant speed. This drive form thus also runs efficiently when changing frequently between partial and nominal load. You can save up to 50 percent of energy with this drive concept compared to traditional solutions.

Hydraulic system Motor-transmission combination Direct drive technology
Energy efficiency Poor overall efficiency due to current losses Poor energy efficiency due to friction losses High energy efficiency due to good efficiency
Service/maintenance costs High maintenance costs because risk of leaks & Temperature dependency of oils Routine maintenance with oil check for gears Virtually no maintenance costs
Noise emission Switching noises of the valves and pressure differences Noise load from gears Motor operation virtually noise-free
Space requirements Extensive space required Extensive space required Compact design

All the below motors are available for 1 phase / 3 phase applications with VFD 230 – 415 Volts

Inner Rotor configuration