Gears and transmission
Metric spur gear with hub, D-shaft bore and M3 nut slot
- Bounding box
- 17.2 × 17.1 × 14 mm
- Engine
- 3D Printing B-rep
- Parameters
- 10
- Published
- October 28, 2026
Download
Free to download and use. See the terms.
The prompt
Create a standard metric involute spur gear with 15 teeth, module 1.0, and a 6mm face width. Include a 12mm diameter hub extending 8mm backward. The center bore must be a 4.1mm D-shaft hole (flat distance at 3.5mm from the center). Add a side slot in the hub designed to trap an M3 hex nut (5.5mm width flat-to-flat, 2.4mm thickness) and include a 3.2mm perpendicular hole going from the outer hub edge through the nut slot into the flat part of the D-shaft for an M3 set screw.
Parameters
| Name | Value | Range |
|---|---|---|
| Module | 1 mm | 0.5 – 3 |
| Number of teeth | 15 mm | 5 – 60 |
| Face width | 6 mm | 2 – 20 |
| Hub diameter | 12 mm | 6 – 40 |
| Hub length | 8 mm | 2 – 30 |
| D-shaft bore diameter | 4.1 mm | 2 – 20 |
| Requested D-shaft flat distance -- clamped to valid chord | 3.5 mm | 0.5 – 5 |
| M3 hex nut width AF | 5.5 mm | 4 – 10 |
| M3 hex nut thickness | 2.4 mm | 1 – 6 |
| Set screw clearance hole diameter | 3.2 mm | 2 – 6 |
Every value above is a live dimension. Open a model like this in the editor and each one becomes a slider you can drag before exporting.
More models
Browse the full gallery →Spur Gearbox
design gearbox
Involute Spur Gear with Keyway
Precision Involute Spur Gear with Hub and Keyway: Module (m) of 2.0 mm, 40 teeth (z), Pitch Circle Diameter (d) of 80.00 mm, 20° pressure angle (\alpha), 15.00 mm face width (b), a
Parametric Helical Gear
Create a parametric helical gear with the following specifications: 32 teeth, normal module of 3 mm, right-hand helix, total face width of 80 mm, and a central bore hole with a dia
Rod with Spur Gear
Metal rod diameter is 20 mm and length is 100 mm and right side attach a gear and their OD is 50 mm
Spur Gear (12 Teeth)
Built a gear with 12 teeth
Two-Stage Spur Gear Reduction Assembly
Design a 2-stage spur gear reduction set for 3D printing with an overall 10:1 ratio. Stage 1: A 12-tooth pinion driving a 36-tooth gear (3:1). Stage 2: A 12-tooth pinion coupled