Hepco PDU/PDU2 belt driven units provide exceptional performance at a competitive price which is unmatched by similar size of belt products. Compact ready to mount units in lengths up to 6m. Herculane low friction wheel technology. Corrosive resistant version available. Max. load: 75 kg. The PDU-series is a light version of DLS. The carriage is not driven by steel wheels/-tracks but is driven by wheels made from herculan. Can be adjusted as the wheels wear.