The condition of the supply lines and cable harnesses is crucial for the reliable operation of robots and production machines. To prevent faults in the supply lines, they can be protected by hoses, sleeves or sheaths.

Various materials are available. The material is selected according to the functional, mechanical and thermal requirements. One material that has proven to be extremely resilient is leather. It is flexible, does not burn and does not develop toxic fumes when scorched. In addition, it is possible to specifically influence the material properties through coatings or reinforcements. Bellows can be used to protect supply lines, but can also take on the function of expansion joints. As soft expansion joints, they are made of leather or technical fabrics. Material and design are criteria that are important right from the planning stage. Expertise and experience are required here.