Compact and heavy duty rope winches

Compact and heavy duty rope winches are mainly used for small to medium loads. A planetary gearbox integrated into the rope drum transfers a torque of between 6000 and 800,000 Nm via the internal gear wheel onto the rope drum. Depending on requirements, two gearboxes can be integrated for a double sided drive. The rope drum can be designed to have normal or special grooving for one or more rope layers. Depending on the application and customer’s requirements, rope winches are delivered with or without winch frames and with a pressure roller or slack rope protection including a rope limit switch.

Liebherr rope winches are characterised by compact designs and perfected safety equipment, and make high cable speeds and capacities possible. Rope grooves worked by special CNC machines ensure minimal rope wear and tear, a long lifespan and a precise cable feed. The rope winches are used as hoisting winches for main or auxiliary hoists, as boom winches or for crane trolley mechanisms. Liebherr rope winches are also used as deep-sea and deck winches, as well as derrick winches.

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, gear ratios and dimensions are available in a wide range of additional arrangements and can be adjusted at any time.

KSW 300
Output torque [Nm]
9,000
Rope diameter [mm]
16
Drum diameter [mm]
410
Motor type
Hydraulic motor
Weight [kg]
290
The KSW 300 without frame and other options is quite typical for smaller standard rope winches.
KSW 550
Output torque [Nm]
95,000
Rope diameter [mm]
28
Drum diameter [mm]
650
Motor type
Hydraulic motor
Weight [kg]
2,500
The KSW 550 is a rope winch with a light-construction frame, such as is used in mobile cranes.
SSW 650
Output torque [Nm]
80,000
Rope diameter [mm]
32
Drum diameter [mm]
800
Motor type
Two hydraulic motors
Weight [kg]
3,500
The SSW 650 has two separate winding areas on the rope drum and can be operated with two ropes. It is also designed for "heavy lifting".
KSW 1100
Output torque [Nm]
800,000
Rope diameter [mm]
52
Drum diameter [mm]
1,400
Motor type
four hydraulic motors
Weight [kg]
22,000
The KSW 1100 is the largest compact rope winch so far offered by Liebherr. It is operating in a large offshore crane.