Target-ratio search
Find integer sun, planet and ring tooth counts near a requested ratio instead of guessing combinations manually.
ONLINE PLANETARY GEAR GENERATORBuilt for real geometry
Turn a target ratio into a complete planetary gearbox.
Search valid sun, planet and ring combinations, analyse simple and compound trains and package the selected mechanism with bearings, shafts, housing and motor interface.
No installation · Guest access available · Free account optional
REAL GEARSUITE WORKSPACELIVE 3D
2K‑Hsimple planetary trains
3Kcompound Wolfrom trains
360°assembly inspection
FROM CALCULATION TO PARTOne continuous model
Planetary ratio search connected to buildable geometry
A ratio alone does not make a planetary gearbox. Tooth counts must satisfy assembly conditions, planets need physical clearance and every selected gear has to fit shafts, bearings and a housing.
GearSuite searches compatible tooth-count combinations and carries the chosen train into a complete 3D assembly. Simple planetary and high-ratio Wolfrom arrangements share the same geometry and export workflow, so the calculation remains connected to the machine it creates.
CAPABILITIESUseful engineering detail
What this generator handles.
Simple planetary kinematics
Calculate fixed-ring, fixed-sun and fixed-carrier relationships with clear input, output and reaction members.
Wolfrom high reduction
Explore compound 3K planetary trains for compact ratios beyond a conventional single stage.
Planet spacing checks
Validate assembly phase, planet count, clearances and the geometry needed for evenly distributed planets.
Complete gearbox assembly
Add shafts, bearings, carriers, housing, fasteners and motor interfaces around the selected gear train.
Part-level inspection
Explode or isolate the gearbox and export supported gears and enclosure components.
WORKFLOWFour direct steps
Configure. Inspect. Validate. Export.
- 01
Choose the topology
Start with a simple planetary arrangement or a compound Wolfrom train.
- 02
Find the tooth counts
Search by target ratio and select a combination that satisfies the assembly constraints.
- 03
Package the train
Resolve bearings, shafts, carrier, motor face and housing dimensions.
- 04
Inspect and export
Review the complete gearbox in 3D and take supported parts into manufacturing.
QUESTIONSDirect answers
Planetary gearboxes FAQ.
Can the calculator find planetary tooth counts from a ratio?+
Yes. GearSuite searches integer tooth-count combinations around a target ratio and filters them through the relevant geometric and assembly conditions.
What is a Wolfrom gearbox?+
A Wolfrom or 3K planetary train uses compound planets engaging two ring gears to produce a high reduction in a compact coaxial package.
Does the generator include a gearbox housing?+
Yes. The assembly workspace carries the selected train into shafts, bearings, carrier, enclosure, fasteners and a motor interface.
ONLINE PLANETARY GEAR GENERATOR