Brackets and mounts
Outrunner Brushless DC Motor 42mm
- Bounding box
- 42 × 42 × 38 mm
- Engine
- 3D Printing B-rep
- Parameters
- 32
- Published
- November 13, 2026
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The prompt
"Outrunner brushless DC motor assembly, outer diameter 42 mm, total height 38 mm, fitting inside a 50x50x50 mm cube. Includes a cylindrical anodized aluminum housing with ventilation slots, 4 bottom mounting holes on a 19x19 mm pattern, internal 12-tooth copper wound stator core, 14 internal permanent magnets around the rotor bell, central 4 mm diameter steel shaft, and top and bottom deep-groove ball bearings. Clean mechanical CAD geometry."
Parameters
| Name | Value | Range |
|---|---|---|
| Bell outer diameter | 42 mm | 20 – 60 |
| Bell height | 30 mm | 10 – 60 |
| Bell wall thickness | 1.5 mm | 1.2 – 4 |
| Top bearing hub diameter | 16 mm | 8 – 26 |
| Number of vent slots | 8 mm | 0 – 16 |
| Vent slot width | 4 mm | 1 – 10 |
| Vent slot height | 12 mm | 2 – 24 |
| Vent slot centre height | 20 mm | 6 – 28 |
| Stator outer diameter | 28 mm | 15 – 40 |
| Stator bore diameter | 8 mm | 4 – 20 |
| Lamination stack height | 12 mm | 4 – 30 |
| Number of teeth | 12 mm | 6 – 24 |
| Tooth width | 3.2 mm | 1.5 – 6 |
| Yoke radial thickness | 3 mm | 1.5 – 8 |
| Winding overall diameter | 32 mm | 10 – 44 |
| Winding height | 12 mm | 4 – 30 |
| Winding build thickness | 1.6 mm | 0.8 – 4 |
| Number of magnets | 14 mm | 4 – 24 |
| Magnet thickness | 2 mm | 1 – 6 |
| Magnet width | 8 mm | 2 – 16 |
| Magnet height | 12 mm | 4 – 30 |
| Shaft diameter | 4 mm | 2 – 10 |
| Shaft length | 38 mm | 10 – 60 |
| Bearing outer diameter | 10 mm | 4 – 22 |
| Bearing bore diameter | 4 mm | 1 – 12 |
| Bearing height | 4 mm | 2 – 12 |
| Base plate diameter | 42 mm | 20 – 60 |
| Base plate thickness | 4 mm | 2 – 10 |
| Centre boss diameter | 30 mm | 10 – 44 |
| Centre boss height | 4 mm | 0 – 12 |
| Mounting hole pattern | 19 mm | 10 – 40 |
| Mounting hole diameter | 3.4 mm | 2 – 8 |
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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