Gear ring rope winches are used for high to extremely high rope pull forces, such as those that occur with heavy-duty crawler cranes, deep-sea winches and other specialist applications. Output torques of up to 2500 Nm are handled most economically by using a gear ring with several external slewing drives, which can be driven electrically or hydraulically. The redundancy of the slewing drives offers high operational safety for the rope winch. Damage resulting from overloading of the drive system can be prevented by optional system safety geometry patented by Liebherr.
Liebherr rope winches are always designed for the specific requirements. The types in the table below give an idea of the range of options. Output torques, ratios and dimensions are available in a wide range of additional arrangements and can be adjusted at any time.