Machine Heart

Jul 20, 2026 · Industry Insights

World’s Smallest Frameless Torque Motor: MARHE’s HummingDrive Delivers 12 mNm in a 3.5 g Package

MARHE unveiled the HummingDrive™ series, the world’s smallest frameless torque motor with diameters from 9.9 mm to 20 mm, weighing as little as 3.5 g yet delivering up to 12.33 mNm peak torque, achieved through a 1.6 T rare‑earth magnet and Halbach topology, targeting ultra‑compact robotic applications.