10 : 1
10 : 1 · 16 DP on a 10 mm hex
16 DP · 20° · ZA
A four-start 16 DP worm and a wheel on a 10 mm hex bar, held by a DIN 471 retaining ring.
Sample · m 3 · 20° · ZA
40 : 1 · ISO 14 spline wheel
A module 3 wheel on an ISO 14 6 × 23 × 26 spline with rings on both faces, the worm held by a set screw.
What's in this design
Worm · 1 start
- 1 start, right hand · tip Ø36, pitch Ø30, root Ø22.5 mm · 50 mm long · bore Ø10 mm · hub on one end, Ø22, 1 × M4 set screw (captured nut)
Wheel · 40 teeth
- 40 teeth, throated · outside Ø129, pitch Ø120 mm · face 24.5 mm · ISO 14 spline 6 × 23 × 26, retaining rings on the top and bottom ends · no hub
The mesh · m 3 · 20° · ZA
- ratio 40 : 1 · centre distance 75 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
15 : 1 · hubs with heat-set inserts
m 2 · 20° · ZA
Hubs on both parts with M3 set screws in heat-set inserts, for a printed two-start drive.
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.