Gears and transmission
Spur gear 21T DP16 30° PA
- Bounding box
- 36.4 × 36.5 × 10.0 mm
- Engine
- Precision B-rep
- Parameters
- 7
- Published
- September 17, 2026
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The prompt
To generate a spur gear 21 tooth module 2 mm gear at 30 degrees Pitch diametor 16/32 and Reference diameter 33.338 mm and Small diameter Dri 30.5(0,-0.2) and large Diameter Dei 34.3(0,+0.2) and Span number of teeth K=4 and Base tangent length WK 16.7-16.75 and Pin diameter D3.05. TextoCAD produces a parametric involute gear you can tune with sliders and export as STEP or STL.
Parameters
| Name | Value | Range |
|---|---|---|
| Module | 1.59 mm | 1 – 3 |
| Number of teeth | 21 count | 5 – 100 |
| Pressure angle | 30 deg | 14.5 – 45 |
| Face width | 10 mm | 5 – 30 |
| Bore diameter | 6 mm | 2 – 15 |
| Addendum coefficient | 0.3 | 0.1 – 1 |
| Dedendum coefficient | 0.89 | 0.1 – 1.5 |
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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