Planetary Gears
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A 3D modelled planetary gearbox, consisting of a central sun gear, planet gears, internal ring gear and output carrier
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Model information
- Source
- Printables
- Category
- Mechanical Parts
- License
- Creative Commons — Attribution — Share Alike
Planetary Gears - 3 planets
A compact planetary gear system designed on onshape, with a central sun gear, 3 planet gears, an internal ring gear, and an output
Features
central sun gear
3 planet gears
Internal ring gears
Output carrier
Ring gear
Gear Specifications
Gear type: Spur
Module: 2mm
Pressure angle: 20°
Sun gear: 25 teeth
Planet gear: 38 teeth
Internal ring gear: 101 teeth
Number of planet gears: 3
Tooth follows the gear relationship
Nr=Ns+2Np
Included Files
Individual component .step files
Individual component .stl files
Assembled .step file for reference
Printing Recommendations
Material: PLA/PETG
Layer height: 0.2mm
Infill: 30-50%
Nozzle: 0.4mm
Supports: Check w/slicer
These settings have not been experimentally validated. Print tolerances may require adjustments
Assembly
Sun gear sits inside the internal ring gear, centre prong of the output, the planets go on each of the other prongs of the output carrier
ring goes around everything