Stepper worm gearbox drives

The rugged gearboxes are made of die-cast zinc and incorporate case hardened steel gears with synthetic friction bearings. When fitted to NEMA size 23 or 34 hybrid stepper motors the combined powertrain generates high holding torque through a thin-profile worm gearbox. The unit provides a compact low-cost solution for widespread applications in medical technology, machine drives and office automation with critical weight, space and volume constraints.

"Traditionally for high torque requirements, in-line planetary gearheads are fitted to hybrid stepper motors, which adds considerable mass and length to the drive system," said Astrosyn director David Melder. "The prohibitive cost also rules out this approach for price-sensitive volume applications that require high torque output."