General Electric Company
Planetary gear system

Abstract:

A planetary gear system is disclosed. The planetary gear system includes a carrier, a planet gear defining a central planet axis, a pin coupling the planet gear to the carrier and a bearing disposed between the planet gear and the pin. The bearing includes a plurality of rolling elements. Each of the rolling elements is in contact with an inner race and an outer race. The planet gear has a formed therein cooling passage for allowing a coolant to pass therethrough to cool the planet gear.