Focus on safety

Liebherr adopts the very highest safety standards for the design of its mobile and crawler cranes. This particularly applies to the structural values. Our developers calculate every single crane's structural integrity with a safety margin of 1.5.

Every single crane has to pass a whole series of intensive, continuous tests and checks both during the entire production process and then afterwards on the factory's own test site. The test load for the crane acceptance procedure on the test site is around 25 percent higher than the standard load capacity.

For over 40 years, we have been developing solutions for safe crane operations and sharing this knowledge through training and documentation. A particular focus is on the risks posed by wind: it affects the crane and the load within seconds and can significantly compromise lateral stability, often without detection by the control system. The shape and weight of the load are also crucial: large surfaces exposed to the wind, such as rotor blades, can exceed the values in standard load charts. One important rule always applies: Double the wind speed means four times the load on the boom and the load.

The rescue sheet provides information on the vehicle structure, suitable cutting points on the driver’s cab and crane cab, as well as the position of relevant media such as fuels or oils, including hazard class and quantity. It also shows the cab layout with seats and adjustment functions.

Since 2011, Liebherr mobile cranes have been equipped with rescue sheets. All LTM and LTC models from emission stage 3b onwards include them as standard. To ensure the correct sheet is used, it is device-specific and located behind the driver’s seat on the crane.