epicyclic train

epicyclic train

n. A system of gears in which at least one rotating gear revolves about another.

epicyclic train

n (Mechanical Engineering) a cluster of gears consisting of a central gearwheel with external teeth (the sun), a coaxial gearwheel of greater diameter with internal teeth (the annulus), and one or more planetary gears engaging with both of them to provide a large gear ratio in a compact space

ep′icy′clic train′

n. a train of gears or pulleys in which one or more of the axes revolve about a central axis. [1885–90]

Thesaurus

Noun

1.

epicyclic train - a system of epicyclic gears in which at least one wheel axis itself revolves about another fixed axisepicyclic gear traingearing, geartrain, power train, gear, train - wheelwork consisting of a connected set of rotating gears by which force is transmitted or motion or torque is changed; "the fool got his tie caught in the geartrain"epicyclic gear, planet gear, planet wheel, planetary gear - an outer gear that revolves about a central sun gear of an epicyclic trainsun gear - the central gear in an epicyclic train