Brackets and mounts
HappyModel EX1103S Brushless Motor
- Bounding box
- 13.5 × 13.5 × 20.7 mm
- Engine
- 3D Printing B-rep
- Parameters
- 35
- Published
- November 9, 2026
Download
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The prompt
Create a detailed and dimensionally accurate 3D CAD model of the HappyModel EX1103S brushless motor. The model must represent the complete motor assembly, including its outer rotating bell, stator, central shaft, mounting base and internal structural components. 1. Overall dimensions: - Outer motor diameter: 13.5 mm - Overall motor height: 15.5 mm - Stator diameter: 11 mm - Stator height: 3 mm - Shaft diameter: 1.5 mm - Shaft protrusion: approximately 5.2 mm 2. Motor construction: - Brushless outrunner motor configuration. - 9N12P electromagnetic configuration. - 9 stator teeth. - 12 rotor magnets. - Central rotating shaft. - Two bearings supporting the shaft. - Outer bell housing surrounding the stator. 3. Mounting base: - Four-hole mounting
Parameters
| Name | Value | Range |
|---|---|---|
| Outer bell diameter | 13.5 mm | 8 – 20 |
| Base bottom to bell top | 15.5 mm | 10 – 25 |
| Bell housing height | 11 mm | 6 – 18 |
| Bell side wall thickness | 0.6 mm | 0.4 – 2 |
| Bell top thickness | 1.5 mm | 0.6 – 4 |
| Bell shaft hub diameter | 5 mm | 3 – 8 |
| Bell hub height | 6 mm | 2 – 10 |
| Stator outside diameter | 11 mm | 8 – 16 |
| Stator height | 3 mm | 1 – 8 |
| Stator tooth count | 9 mm | 6 – 12 |
| Stator tooth width | 1.4 mm | 0.8 – 3 |
| Stator center bore | 4.8 mm | 3 – 7 |
| Copper winding outside diameter | 3.2 mm | 2 – 5 |
| Copper winding inside diameter | 1.2 mm | 0.8 – 2 |
| Copper winding radial length | 2.4 mm | 1 – 4 |
| Winding center radius | 4.1 mm | 2 – 6 |
| Rotor magnet count | 12 mm | 8 – 16 |
| Magnet ring inside diameter | 11.4 mm | 8 – 16 |
| Magnet radial thickness | 0.45 mm | 0.3 – 1.5 |
| Magnet height | 3.5 mm | 1 – 8 |
| Gap between magnets | 2 deg | 0 – 8 |
| Shaft diameter | 1.5 mm | 1 – 4 |
| Shaft length | 16 mm | 8 – 30 |
| Shaft above bell top | 5.2 mm | 2 – 12 |
| Shaft hole clearance | 0.05 mm | 0 – 0.3 |
| Bearing outside diameter | 4 mm | 3 – 8 |
| Bearing inside diameter | 1.5 mm | 1 – 4 |
| Bearing height | 2 mm | 1 – 5 |
| Bearing seat clearance (mm, negative = press fit) | -0.05 mm | -0.2 – 0.2 |
| Bearing tube outside diameter | 5 mm | 3 – 8 |
| Bearing tube height | 8 mm | 4 – 14 |
| Mounting base diameter | 13.5 mm | 8 – 20 |
| Mounting base height | 2.5 mm | 1 – 6 |
| Mounting hole diameter | 1.6 mm | 1 – 4 |
| Mounting hole bolt circle | 9.5 mm | 5 – 18 |
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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