Gears and transmission
12T Module 0.75 Spur Gear with Hub
- Bounding box
- 10.5 × 10.5 × 12.0 mm
- Engine
- Precision B-rep
- Parameters
- 9
- Published
- September 29, 2026
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The prompt
From your measurements, I would initially model the gear with: 12 teeth Module: 0.75 mm Pitch diameter: 9.00 mm Outside diameter: 10.50 mm Root diameter: 7.85 mm Bore: Ø5.00 mm Toothed face width: 7.53 mm Hub extension: 4.47 mm Overall axial length: 12.00 mm Hub outside diameter: approximately Ø9.00 mm if your 2 mm wall thickness measurement is correct Pin holes: 2 × Ø2.25 mm Pin holes: 180° apart Pin-hole axial position: approximately 0.40 mm below the end of the toothed section
Parameters
| Name | Value | Range |
|---|---|---|
| Module | 0.75 mm | 0.3 – 2 |
| Number of Teeth | 12 teeth | 6 – 60 |
| Toothed Face Width | 7.53 mm | 2 – 20 |
| Bore Diameter | 5 mm | 1 – 12 |
| Hub Outside Diameter | 9 mm | 3 – 24 |
| Hub Extension | 4.47 mm | 0.5 – 20 |
| Pin Hole Diameter | 2.25 mm | 0.5 – 5 |
| Pin Hole Offset Past Tooth End | 0.4 mm | 0 – 4 |
| Hub Top / Bore Chamfer | 0.3 mm | 0.1 – 1 |
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.
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