Sawdust is also not a problem for igus® e-chains®. Unlike the cable tubes which were previously used for the energy supply and frequently resulted in failures because of extreme wear, four e-chains® of the E4/4 family in one guiding trough guarantee cleanly cut pieces of wood. Since their installation, there has not been a single failure that could have been caused by the energy supply system. And because of the clean laying of cables in the e-chain®, the work safety was also increased.