18-Tooth Module 0.5 Spur Gear
Standard 20° pressure-angle involute spur gear — free engineering reference, STL/DXF/SVG downloads, and a live customizer.
| Teeth | 18 |
|---|---|
| Module | 0.5 mm |
| Pressure angle | 20° |
| Pitch diameter | 9 mm |
| Outside diameter | 10 mm |
| Root diameter | 7.75 mm |
| Base diameter | 8.46 mm |
| Circular pitch | 1.57 mm |
| Addendum | 0.5 mm |
| Dedendum | 0.63 mm |
| Whole depth | 1.13 mm |
| Tooth thickness (at pitch circle) | 0.79 mm |
| Bore diameter (default) | 2.25 mm |
| Face width (default) | 3 mm |
Meshing
- Meshes with a 16-tooth module 0.5 gear at a center distance of 8.5 mm.
- Meshes with a 20-tooth module 0.5 gear at a center distance of 9.5 mm.
Related gears
16T · m0.5
Fewer teeth, same module
20T · m0.5
More teeth, same module
18T · m0.3
Same 18 teeth, module 0.3
18T · m1
Same 18 teeth, module 1
18T · m2
Same 18 teeth, module 2