Gears and transmission
Bafang Helical Gear
- Bounding box
- 124.8 × 124.8 × 0.0 mm
- Engine
- Precision B-rep
- Parameters
- 6
- Published
- August 20, 2026
Download
Free to download and use. See the terms.
The prompt
Generate a parametric helical gear for a Bafang motor. Please create an adjustable parameter sheet with the following default variables: Tooth Count (Z): 76 Gear Thickness: 22.5 mm Inner Bore Diameter: 31.7 mm Module: 1.6 Pressure Angle: 20 degrees Helix Angle: 12 degrees Using these variables, generate a true involute tooth profile and apply the helix twist across the total gear thickness. Subtract the inner bore from the exact center. Tag the main gear geometry as @feature[gear_body] and the center hole as @feature[bore] so I can reference them in future prompts. Ensure the final code compiles into a single manifold mesh ready for STEP export.
Parameters
| Name | Value | Range |
|---|---|---|
| Module (mm) | 1.6 mm | 0.5 – 5 |
| Tooth Count | 76 | 10 – 200 |
| Pressure Angle (deg) | 20 ° | 14.5 – 30 |
| Helix Angle (deg) | 12 ° | 0 – 45 |
| Gear Thickness (mm) | 22.5 mm | 5 – 50 |
| Inner Bore Diameter (mm) | 31.7 mm | 5 – 50 |
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.
More models
Browse the full gallery →Spur Gearbox
design gearbox
Spur Gear (12 Teeth)
Built a gear with 12 teeth
Involute Spur Gear with Keyway
Precision Involute Spur Gear with Hub and Keyway: Module (m) of 2.0 mm, 40 teeth (z), Pitch Circle Diameter (d) of 80.00 mm, 20° pressure angle (\alpha), 15.00 mm face width (b), a