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Planetary Gear Calculator
Design Planetary Gears System
Heng Jia Liang · Productivity
★ 4.67average rating
6ratings
+0new ratings, last 7 days
—not in top charts now
Ratings breakdown
| ★★★★★ | 67% | |
| ★★★★ | 33% | |
| ★★★ | 0% | |
| ★★ | 0% | |
| ★ | 0% |
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App info
- Developer
- Heng Jia Liang
- Category
- Productivity, Utilities
- Released
- Apr 7, 2022
- Version
- 1.1 (Jan 23, 2026)
- Price
- $3.99
- Size
- 0.8 MB
- Requires
- iOS 13
- Age rating
- 4+
- Languages
- English
In-app purchases
noneCurrent prices, App Store US.
About Planetary Gear Calculator
Planetary Gears Calculator calculate the gear teeth and gear speed of planetary gears system. Plus quickly simulate how the Planetary Gears works on the fly. This is a great tool, especially for DIYer who want to design their own Planetary Gears System quick and easy. Preview how these systems work before 3D print own planetary gear system. Formula for Planetary gear systems: Sun Teeth = ringTeeth - 2 * planetTeeth Planet Teeth = (ringTeeth - sunTeeth) / 2 Ring Teeth = sunTeeth + 2 * planetTeeth ST = sunTeeth PT = planetTeeth RT = ringTeeth SunSpeed = (ST+RT)/ST * PlanetCarrierSpeed - RT/ST * RingSpeed PlanetCarrierSpeed = RT/(ST+RT) * RingSpeed + ST/(ST+RT) * SunSpeed RingSpeed = (ST+RT)/RT * PlanetCarrierSpeed - ST/RT * SunSpeed Planetary gear systems, also known as epicyclic gear systems, are important components in modern engineering. Planetary gear systems are useful for speed…
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