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sun gear

NOUN
  1. the central gear in an epicyclic train

How To Use sun gear In A Sentence

  • The ring gear is attached to the motor, the sun gear is connected to the generator, and the engine drives - or is driven by (during starting) - the pinion gears.
  • That gear meshes with three planet gears which in turn drive a second sun gear attached to the pinion shaft.
  • One or more of the hollow wheel gear, two or more planet gears, and sun gear comprise a plurality of teeth 4 that have been superfinished to a final surface roughness of 0.25 micron or less.
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