40 : 1
Sample · 12 DP · 20° · ZA
24 : 1 · 12 DP
A 12 DP single-start worm on a ¼" shaft driving a 24-tooth wheel on ½", Boston Gear style.
What's in this design
Worm · 1 start
- 1 start, right hand · tip Ø25.4, pitch Ø21.17, root Ø16.27 mm · 34 mm long · bore ؼ" · no hub
Wheel · 24 teeth
- 24 teeth, throated · outside Ø56.3, pitch Ø50.8 mm · face 17.5 mm · bore ؽ" · no hub
The mesh · 12 DP · 20° · ZA
- ratio 24 : 1 · centre distance 35.983 mm · lead angle 5.71° · efficiency 65 % (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
15 : 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.