Gears and transmission
Spur Gear, Hub, Ø2.33 Transverse Cross-Hole
- 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
Modify the attached STEP gear model. Change ONLY the transverse (radial) through-hole diameter from Ø2.25 mm to Ø2.33 mm. Keep the transverse hole: Perpendicular to the gear's main axis. Passing through the central Ø5.00 mm bore. Aligned beneath two opposite tooth valleys. Centered at Z = 8.755 mm, measured from the front face of the gear. IMPORTANT: Preserve the original 0.10 mm clearance between the nearest edge of the transverse hole and the gear/hub shoulder. To achieve this with the new Ø2.33 mm diameter, move the hole center to Z = 8.795 mm. Preserve all other dimensions exactly: 12 teeth, module 0.75, pressure angle 20°. Root diameter Ø7.10 mm. Outside diameter Ø10.50 mm. Pitch diameter Ø9.00 mm. Gear face width 7.53 mm. Hub outside diameter Ø9.00 mm. Hub extension 4.47 mm. Overall length 12.00 mm. Axial through-bore Ø5.00 mm. Create one valid watertight solid and export as a STEP file in millimeters. Do not modify any other geometry.
Parameters
| Name | Value | Range |
|---|---|---|
| Module | 0.75 mm | 0.2 – 3 |
| Number of teeth | 12 teeth | 6 – 60 |
| Gear face width | 7.53 mm | 2 – 40 |
| Hub outside diameter | 9 mm | 3 – 40 |
| Hub extension | 4.47 mm | 0.5 – 40 |
| Axial through-bore diameter | 5 mm | 1 – 25 |
| Transverse hole diameter | 2.33 mm | 0.5 – 6 |
| Transverse hole centre Z (from front face) | 8.8 mm | 1 – 40 |
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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