Gears and transmission
Hex-to-Clamp Adapter
- Bounding box
- 21.0 × 22.0 × 16.5 mm
- Engine
- Precision B-rep
- Parameters
- 12
- Published
- November 2, 2026
Download
Free to download and use. See the terms.
The prompt
Create a parametric 3D mechanical adapter/coupler. Section 1 (Wheel Side): - A solid 6.0mm hexagon profile (measured flat-to-flat). - Extrude this hex profile to a length of 10mm. Section 2 (Motor Side Clamping Hub): - Seamlessly transition the hex into a wider, solid cylinder with an outer diameter of 16mm. - The internal bore of this cylinder must be a smooth hole with a diameter of 9.1mm (calculated as the midpoint between the 9.8mm teeth tip diameter and 8.4mm dividing diameter of the 14-tooth gear). - The internal bore depth should be exactly 6.5mm to match the gear thickness. Clamping Mechanism: - Add a 2.0mm wide vertical split down one side of the cylindrical hub to allow it to clamp down. - Model a horizontal clamping ear across the split. - Include a 3.2mm clearance through-hole for an M3 bolt on one side of the split, and a captive hexagonal pocket for a standard M3 nut on the opposite side.
Parameters
| Name | Value | Range |
|---|---|---|
| Hex Flat-to-Flat | 6 mm | 2 – 20 |
| Hex Length | 10 mm | 2 – 30 |
| Cylinder OD | 16 mm | 10 – 40 |
| Bore Diameter | 9.1 mm | 5 – 30 |
| Bore Depth | 6.5 mm | 2 – 20 |
| Split Width | 2 mm | 0.5 – 5 |
| Ear Extension | 5 mm | 2 – 10 |
| Ear Block Width | 10 mm | 5 – 20 |
| Clearance Hole Dia | 3.2 mm | 2.5 – 5 |
| Nut Hex Size | 5.5 mm | 4 – 10 |
| Nut Thickness | 2.4 mm | 1 – 5 |
| Transition Fillet | 1 mm | 0 – 3 |
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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