Gears and transmission
12T Module 0.75 Spur Gear, Cross-Drilled (Ø2.30)
- Bounding box
- 10.3 × 10.3 × 12.0 mm
- Engine
- Precision B-rep
- Parameters
- 8
- Published
- October 14, 2026
Download
Free to download and use. See the terms.
The prompt
Edit the existing STEP model. Change the transverse through-hole diameter from 2.33 mm to 2.30 mm. Set its center to Z = 8.780 mm to maintain 0.10 mm clearance from the shoulder at Z = 7.530 mm. Keep the hole perpendicular to the gear axis and aligned beneath opposite tooth valleys. Preserve all other geometry exactly, including the Ø7.10 mm root diameter. Rebuild the solid and export a valid STEP file in millimeters.
Parameters
| Name | Value | Range |
|---|---|---|
| Module | 0.75 mm | 0.2 – 3 |
| Number of Teeth | 12 | 6 – 60 |
| Gear Face Width | 7.53 mm | 2 – 30 |
| Hub Outside Diameter | 9 mm | 5 – 30 |
| Hub Extension | 4.47 mm | 0.5 – 30 |
| Central Bore Diameter | 5 mm | 1 – 20 |
| Transverse Hole Diameter | 2.3 mm | 0.5 – 8 |
| Transverse Hole Center Height (from front face) | 8.78 mm | 0 – 30 |
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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