NEMA17 Inversed Timing Belt Reducer
thingiverse
This 1/4 reducer was inspired by a video I saw on Youtube. So I made my own design which fits a NEMA17 motor: https://youtu.be/ul7GTENJY2E It uses an inversed timing belt and a inversed pulley design with a greater diameter to create a reduction. This design uses a 16T motor pulley, and a 158mm long 6mm GT2 timing belt. The reversed 3d printed pulley has 64t, which produces a 16/64 or 1/4 gear ratio. The total height of the gearbox is nearly 20mm, but this includes a spacer of 4mm. The spacer can be replaced as mounting plate for the assembly. What more do you need: - 4x 623ZZ bearings - 1x MR95ZZ bearing - 4x M3 nuts - 4x M3x8 countersunk bolts to mount the motor - 4x M3x12 countersunk bolts to mount the bearings - 1x 16T GT2 6mm pulley, of 14mm height, be careful, higher types are also available but will not the design as good. - 1x 158mm GT2 6mm closed belt The GT2 pulley is mounted upside down. The rest is pretty straightforward.
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