Planetary gear units are used for medium and heavy duty applications with low speeds and high power transmission, and have a compact design. Generally, they are quickly available, and have a good price-quality ratio.
In addition to the universal design there are a number of specific types, for use on concrete mixers,  tracked and wheeled drives, bucket wheel drives, mill drives and winches.

They are available for applications with torques up to 2.600.000 Nm and ratios up to 4000.

Planetary gear units has the following advantages:

- Low weight and compact design
- Wide range of ratio and torque
- Profitable in operating costs due to high efficiency
- low noise