20 DP Spur Gear – 12 Teeth – 20° Pressure Angle | Free CAD Model & Custom Gear Design
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You are purchasing downloadable 3D CAD files, not a physical product.
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Description
Download a 3D CAD model of a 12-tooth involute spur gear designed around a 20 diametral pitch (DP) tooth system and a 20° reference pressure angle. Suitable for mechanical design projects, CAD assemblies, prototyping and gear mechanism development.
| Gear type: External spur gear | Number of teeth: 12 |
| Diametral pitch: 20DP | Reference pressure angle: 20 |
The listed dimensions describe nominal reference geometry and are not a manufacturing certification. Manufacturing tolerances, tooth accuracy, material selection, load capacity and final fit must be evaluated for the intended application.Confirm the actual bore, face width, mounting features and included file formats before purchasing.
Gear Compatibility
For a conventional external spur gear pair, the mating gear must use a compatible tooth system, including the same diametral pitch and pressure angle. Verify centre distance, tooth clearance, backlash and profile geometry before using the pair in a functional mechanism.
A 12-tooth, 20° full-depth pinion can experience tooth undercut. Profile shift or an alternative verified tooth design may be necessary for practical meshing and performance.
Included Cad File Formats
- STEP(.step / .stp): 3MF (.3mf)
- IGES (.iges / .igs): FBX (.fbx)
- SAT (.sat): DWG (.dwg)
- STL (.stl): DXF (.dxf)
- OBJ(.obj): PDF (.pdf)
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