Planetary Gear Reducers

Precision Mechanics • Involute Tooth Profiles • Gear Ratio Calculations • Torque Analysis

Planetary Gearset — 3D Physics

Ratio: — • Carrier RPM: —

Torque Gauge

Load Torque 0%

0.0 Nm

Normal Operation

Gear Ratio Formula

R = 1 + (N_ring / N_sun)

Current Calculation:
R = 1 + (52 / 20) = 3.60

Gearset Specs

Configuration	—
Gear Ratio	—
Sun Diameter	—
Planet Diameter	—
Ring Diameter	—
Center Distance	—
Output Torque	—
Efficiency	—

Reference

Planetary Gears: Compact high-ratio reduction system
Components: Sun (input), Planets (idlers), Ring (fixed), Carrier (output)
Involute Profile: Constant velocity ratio, smooth meshing
Physics: btHingeConstraint with angular motors
Torque: T_out = T_in × R × η
Applications: Robotics, automotive transmissions, aerospace

Ready. Configure gears and click Rebuild.