24 : 1
24 : 1 · 12 DP
12 DP · 20° · ZA
A 12 DP single-start worm on a ¼" shaft driving a 24-tooth wheel on ½", Boston Gear style.
Sample · 16 DP · 20° · ZA
15 : 1 · 16 DP two-start
A small 16 DP two-start pair: 15 : 1 on ⅛" and ⅜" shafts.
What's in this design
Worm · 2 starts
- 2 starts, right hand · tip Ø19.05, pitch Ø15.88, root Ø12.2 mm · 26 mm long · bore Ø⅛" · no hub
Wheel · 30 teeth
- 30 teeth, throated · outside Ø51.75, pitch Ø47.62 mm · face 13 mm · bore Ø⅜" · no hub
The mesh · 16 DP · 20° · ZA
- ratio 15 : 1 · centre distance 31.75 mm · lead angle 11.31° · efficiency 78 % (μ 0.05) · back-drivable
The link opens the worm and wheel in the Worm Gear Designer's 3D view. Change the module or pitch, the starts, the wheel's teeth, the bores or hubs, then download STL or STEP.
More samples
Related worm drives
40 : 1
30 : 1
30 : 1 · module 2, one start
m 2 · 20° · ZA
The starter drive: a single-start module 2 worm turning a 30-tooth throated wheel, 30 : 1.
40 : 1
40 : 1 · module 1.5 on D-flat shafts
m 1.5 · 20° · ZA
A printable 40 : 1 reduction on 5 mm and 8 mm D-flat shafts, with 0.1 mm print compensation on both parts.