Gears and transmission
Spur Gear 30T m1.5
- Bounding box
- 48.0 × 47.9 × 10.0 mm
- Engine
- Precision B-rep
- Parameters
- 5
- Published
- September 28, 2026
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The prompt
Create a precise standard involute external spur gear with the following specifications: - Gear type: External spur gear - Number of teeth: 30 - Module: 1.5 mm - Pressure angle: 20° - Helix angle: 0° - Face width: 10 mm - Bore diameter: 6.2 mm - Profile shift: 0 - Standard full-depth involute tooth profile - Standard tooth geometry - No decorative geometry - No bevel - No chamfer on the tooth tips - No non-standard tooth modifications The gear must correctly mesh with a standard 80-tooth external spur gear having: - 80 teeth - Module 1.5 mm - 20° pressure angle - 0° helix angle Use the following standard dimensions: - Pitch diameter = 45 mm - Outside diameter = 48 mm - Root diameter ≈ 41.25 mm - Face width = 10 mm - Bore = 6.2 mm - Center distance to the 80T gear = 82.5 mm - Gear ratio = 80:30 = 2.667:1 The gear should be a clean solid CAD model suitable for 3D printing using ABS filament with a 0.4 mm nozzle. The 6.2 mm bore is intended to fit onto a 6 mm motor shaft. Keep the bore cylindrical and concentric with the gear axis. The tooth profile must be a true 20° involute profile and must mesh correctly with the 80T module 1.5 gear without interference.
Parameters
| Name | Value | Range |
|---|---|---|
| Module | 1.5 mm | 0.5 – 6 |
| Number of Teeth | 30 teeth | 8 – 200 |
| Face Width | 10 mm | 2 – 40 |
| Bore Diameter | 6.2 mm | 0 – 30 |
| Helix Angle | 0 rad | -0.5 – 0.5 |
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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