40 : 1
40 : 1 · ISO 14 spline wheel
m 3 · 20° · ZA
A module 3 wheel on an ISO 14 6 × 23 × 26 spline with rings on both faces, the worm held by a set screw.
Sample · 16 DP · 20° · ZA
10 : 1 · 16 DP on a 10 mm hex
A four-start 16 DP worm and a wheel on a 10 mm hex bar, held by a DIN 471 retaining ring.
What's in this design
Worm · 4 starts
- 4 starts, right hand · tip Ø19.05, pitch Ø15.88, root Ø12.2 mm · 27 mm long · bore Ø5 mm · no hub
Wheel · 40 teeth
- 40 teeth, throated · outside Ø67.63, pitch Ø63.5 mm · face 13 mm · 10 mm hex bar, retaining ring on the top end · no hub
The mesh · 16 DP · 20° · ZA
- ratio 10 : 1 · centre distance 39.688 mm · lead angle 21.8° · efficiency 86 % (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.