The Feed finger tube 15.01.351 is a key component of the bar feeding system used on Gildemeister DMG Mori GM20AC multi spindle automatic lathes in the 20 mm bar diameter configuration, designed to provide controlled, precise and repeatable linear motion for material feeding during automatic machining cycles. Its operating principle is based on a cam driven kinematic system that converts machine rotation into axial displacement of the drawtube, which acts directly on the bar pusher collet and transmits the force required to push the bar against the bar stop with high positional accuracy and stable cycle repeatability. This system maintains the correct part length reference and reduces dimensional errors caused by transmission backlash, vibration or misalignment, supporting process stability and constant surface quality on turned components. Its field of use is typical of high productivity production in the automotive sector and precision engineering, where feeding continuity and synchronization with spindle drum indexing phases are essential. From a kinematic point of view, the drawtube works with the bar feeding system and machine sequences, contributing to correct cycle timing and motion transmission towards the pushing elements while integrating with the rotation functions of the main spindles. System precision is closely linked to the related components, including locknut 0201202 for axial fixing of the 6206 RS bearing on the drawtube, providing stability and reduced friction during sliding, locknut 0201203 that secures the bar guide bushing to maintain centering and absorb vibration of the rotating bar, and pad 0801017 mounted laterally on the bearing to keep the drawtube correctly aligned along its stroke while supporting linear guidance and compensation of minor dynamic irregularities. Together these elements help control operating tolerances, limit form and geometry errors and maintain constant machining quality even under continuous duty and high load conditions. System adjustments are mainly performed through regulation of the cam lever ratio and the associated mechanical references, allowing stroke and pushing force to be adapted according to the material and production requirements. The Feed finger tube is therefore a key element for machine efficiency, reliability, precision and continuous operation in automatic turning processes.