22 1 An automatic crane system by Vollert is the new core of the extrusion protection in the aluminium plant of Neuman Aluminium PROJECT DETAILS High-performance automatic crane with weigh- ing function for flat storage with 80 storage bins. Stacked up to 5-fold. Very small distances between the transport stacks. AUTOMATIC CRANE FOR EXTRUSION PRODUCTION HIGHLIGHTS 21 change cycles, movement speed up to 4 m, positioning accuracy ±3 mm, scale accuracy to 0.5%, motor-powered pre-centering for stack formation. 1