sun gear

Planetary system center

A sun gear is the central gear in a planetary gear system, around which smaller planet gears rotate.

The arrangement resembles planets orbiting the sun.

Planetary gear systems appear in automatic transmissions, electric screwdrivers, and bicycle hubs, where they provide compact, efficient power transmission with variable gear ratios.

automotive

transmission

Sending of information

clutch · differential · transaxle · overdrive · synchromesh · flywheel · driveshaft · axle · propeller shaft · powertrain

planetary

carrier

One that transports

  • annulusRegion between two circles
  • meshingInterlocking in coordination
  • teethEnamel-covered chewing structures

differential · automatic transmission · CVT · gearbox · powertrain · drivetrain · hub · axis

mechanical

cogwheel

Toothed rotating machine part

lubrication · backlash · module · involute · hardening · wear · efficiency · synchronization · engagement

torque

moment

Brief period of time

mechanical advantage · power transmission · efficiency · horsepower

Opposites
planetary gear system position

sun gearring gear

Toothed wheel with internal teeth

carrier · outer ring · annulus

Family

sun, gear, suns, sunny, sunned, sunning, sunshine, sunlight, sunless

Familiarity
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Used worldwide · Timeless · Concrete · Rated G