With closed-loop control and a wide torque range of 2-12N·m, this motor kit perfectly adapts to every movement of the soldering machine's X/Y/Z axes: whether it's the pinhead-sized solder joints on PCB boards or the fine welds of data cables, the motor can lock coordinates with 0.01mm-level precision. Paired with the 360° rotating soldering function, the fullness of drag-soldered and spot-soldered joints is maximized—cutting the defect rate from 15% (due to missed or cold solder joints) to less than 1%, completely solving the welding quality control challenges faced by both small workshops and large factories.