There is a bearing point for pivoting movement in every connection of the chain links. This was equipped with a maintenance-free tribo-polymer plain bearing. The igus iglidur plain bearing ensures that the wear on these “joints” of the energy chain is kept to a minimum and that the service life can be significantly increased. In the igus series P4.1, which is used on long travels, the igus igus bearing increases the service life by up to a factor of 10! By the experience of both product areas – energy chain systems and plain bearing technology – and the research of new plastic compounds, the two igus core competencies were merged so that plant safety and plant availability could be significantly increased for the user of the P4.1 energy chain. In this way, container cranes in ports, for example, can now achieve a service life of more than 15 years or 20,000 plus operating hours, with low maintenance and high reliability.