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5 mm Shaft Capstan Winch Drum
A flanged capstan drum that bolts straight onto a 5 mm stepper or gearmotor shaft (5.3 mm slip-fit bore) and pulls cord — motorising a roller blind or curtain, or driving a cable-tendon robot joint. 37 mm drum core, 48 mm flanges, 54 mm tall, with two M3 heat-set inserts at 90° for grub screws and two 3.6 mm cord anchor holes that let the knot hide inside the ribbed hub cavity.
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