6 : 1
6 : 1 · four starts
m 2 · 20° · ZA
A four-start worm for a fast, efficient 6 : 1 drive that turns either way.
Sample · 12 DP · 20° · ZA
12 : 1 · 12 DP three-start
A three-start 12 DP worm driving a 36-tooth wheel, 12 : 1, on ¼" and ½" shafts.
What's in this design
Worm · 3 starts
- 3 starts, right hand · tip Ø25.4, pitch Ø21.17, root Ø16.27 mm · 35 mm long · bore ؼ" · no hub
Wheel · 36 teeth
- 36 teeth, throated · outside Ø81.7, pitch Ø76.2 mm · face 17.5 mm · bore ؽ" · no hub
The mesh · 12 DP · 20° · ZA
- ratio 12 : 1 · centre distance 48.683 mm · lead angle 16.7° · efficiency 84 % (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
5 : 1
5 : 1 · six starts
m 1.5 · 20° · ZA
A six-start module 1.5 worm and a 30-tooth wheel: 5 : 1 at a steep lead angle.
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.