Planetary Gearbox 4:1 for NEMA 17 #07 – Printable Involute Gear Reducer, 608 Bearing, 8 mm Output | 6 Parts

**Planetary Gearbox 4:1 for NEMA 17 #07 — part of the Maker Mechanics series.** Four times the torque from your NEMA 17 stepper. A compact planetary reducer with real involute teeth (module 1.5): 12T sun, three 12T planets on printed pins, a 36T ring gear built into the housing that bolts straight onto the motor, a 608 bearing in the lid and an 8 mm output shaft with a flat. The gear mesh was checked for interference in CAD. ### All parts in one download - **housing + ring 36T** — `mm07_planeta…

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