Gears and transmission
6-Tooth Metric Involute Motor Pinion
- Bounding box
- 6.5 × 6.5 × 6 mm
- Engine
- 3D Printing B-rep
- Parameters
- 9
- Published
- October 30, 2026
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The prompt
Create a highly robust, functional metric involute spur gear designed for a high-torque miniature Johnson motor. Specifications: - Number of teeth: 6 - Normal module: 0.75 mm - Pressure angle: 20 degrees - Profile shift coefficient (x): +0.55 (thickens the tooth root base, prevents undercutting, and shortens the tip) - Face width (thickness): 6 mm - Center bore diameter: 2.3 mm - The tooth profile must feature stubby, wide-root teeth with a smooth fillet radius at the root and a rounded tip addendum, identical to an anti-undercut low tooth count motor pinion.
Parameters
| Name | Value | Range |
|---|---|---|
| Number of teeth | 6 mm | 4 – 20 |
| Normal module | 0.75 mm | 0.3 – 2 |
| Pressure angle | 20 deg | 14.5 – 25 |
| Profile shift coefficient x | 0.55 mm | -0.5 – 1.2 |
| Face width | 6 mm | 1 – 20 |
| Center bore diameter | 2.3 mm | 1 – 10 |
| Tip shortening | 0.15 mm | 0 – 0.5 |
| Root fillet radius | 0.18 mm | 0.01 – 0.4 |
| Tip round radius | 0.12 mm | 0.01 – 0.3 |
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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