Gears and transmission
External Spur Gear 80T Module 1.5
- Bounding box
- 123.0 × 123.0 × 10.0 mm
- Engine
- Precision B-rep
- Parameters
- 7
- Published
- September 28, 2026
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The prompt
Create a standard involute external spur gear with the following exact specifications: - Gear type: External spur gear - Number of teeth: 80 - Module: 1.5 mm - Pressure angle: 20° - Helix angle: 0° - Face width: 10 mm - Bore diameter: 110 mm - Profile shift: 0 - Standard full-depth involute tooth profile - No tooth tip chamfer - No bevel - No tooth tip truncation beyond the standard involute profile - No decorative or non-standard tooth geometry The tooth tips should have the normal small flat land produced by a standard involute spur gear, with clean and sharp geometry suitable for 3D printing. The gear must be an external-tooth ring gear, meaning the 80 teeth are on the outside circumference and the 110 mm bore is through the center. Use standard gear geometry: - Pitch diameter = 120 mm - Outside diameter = 123 mm - Root diameter ≈ 116.25 mm Generate the gear as a precise solid CAD model suitable for export to STEP or STL and subsequent 3D printing in ABS with a 0.4 mm nozzle.
Parameters
| Name | Value | Range |
|---|---|---|
| Number of Teeth | 80 | 10 – 160 |
| Module | 1.5 mm | 0.5 – 5 |
| Pressure Angle | 20 deg | 10 – 30 |
| Helix Angle | 0 deg | 0 – 45 |
| Face Width | 10 mm | 2 – 30 |
| Bore Diameter | 110 mm | 5 – 200 |
| Profile Shift | 0 | -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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