More and more space debris, i.e. parts of space missions that are no longer needed or are defective, are also threatening ongoing missions. According to the ESA, there are currently over 600,000 objects with a diameter of more than 1 cm in orbit around the Earth. The first collisions have already occurred, e.g. in 2009 a still-functioning telephone satellite was destroyed by flying parts of an old satellite. To solve this problem, the German space project EPOS ("European Proximity Operations Simulator") was launched. EPOS is a system for simulating rescue and disposal manoeuvres in Earth orbit. With proximity and docking manoeuvres in space ("Rendezvous" and "Docking"), unmanned satellites will be able to act as service or rescue satellites to bring space debris into a so-called graveyard orbit or to carry out repairs. In this system, two 6-arm robots work on a common linear axis with a travel range of 25 metres. The operators were looking for a suitable energy chain solution and linear bearing technology for the process and the cable routing of the robots.