pinion and ring gear

Noun
  1. Gears that mesh at an angle (synset 102836998)
    is a type of: cogwheel, gear, gear wheel, geared wheel - a toothed wheel that engages another toothed mechanism in order to change the speed or direction of transmitted motion
    subtypes: differential, differential gear - a bevel gear that permits rotation of two shafts at different speeds; used on the rear axle of automobiles to allow wheels to rotate at different speeds on curves
    same as: bevel gear, pinion and crown wheel

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