Belted Reduction Gear for Nema 17

thingiverse

- - - **update 22/05: Added reduction_plate_60t.stl file for pulleys with up to 60 teeth** - - - This reduction box supports reductions of up to 2: 1 or 1: 2 I'm creating another one for reductions of up to 3: 1 but that will unfortunately be a little larger to accommodate the larger pulley. This reduction box can also be used to increase the speed of a lead screw. In this case you should use the larger pulley in the engine and the smaller one attached to the lead screw. This is useful if you want to mount 3D printers using lead screws instead a belt. To mount the box you will need: a) Print two plates b) 4 bolts / nuts M4 x 40mm c) 2 M3 x 40mm bolts / nuts d) 4 screws M3x10mm (to hold the motor) e) 2 bearings 608zz f) 2 washers 8mm x 20mm (to fit between the pulley and bearings) g) A GT-2 belt with 100mm perimeter I used this thing to create the pulleys https://www.thingiverse.com/thing:1812136