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 · m 1.5 · 20° · ZA
5 : 1 · six starts
A six-start module 1.5 worm and a 30-tooth wheel: 5 : 1 at a steep lead angle.
What's in this design
Worm · 6 starts
- 6 starts, right hand · tip Ø18, pitch Ø15, root Ø11.25 mm · 25 mm long · bore Ø4 mm · no hub
Wheel · 30 teeth
- 30 teeth, throated · outside Ø49.5, pitch Ø45 mm · face 12.5 mm · bore Ø8 mm · no hub
The mesh · m 1.5 · 20° · ZA
- ratio 5 : 1 · centre distance 30 mm · lead angle 30.96° · efficiency 89 % (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
12 : 1
12 : 1 · 12 DP three-start
12 DP · 20° · ZA
A three-start 12 DP worm driving a 36-tooth wheel, 12 : 1, on ¼" and ½" shafts.
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.