4:1 Planetary Gearbox
thingiverse
I designed three planetary gearsets so far, with this one being a 4:1 reduction ratio, but I've made others with varying ratios. All of my planetary sets are interchangeable and rely on a 0.500 inch or 12 mm hex as the input and output shaft, making it easy to stack them and create different combinations. Each .stl file includes a sun gear, ring gear, five planet gears, a carrier ring, and endcaps that enclose the gears securely. The holes in the corners are designed for a number 8 or M4 bolt and nut to hold everything together tightly.
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