Planetary gearing with closed housing

Planetary gearing comprising:

• a stationary support, an outer housing rotatably suspended from said support, said housing including internal gear teeth and being adapted to contain a lubricant, said stationary support including an inner portion extending within said housing, a driving gear rotatably mounted within said inner stationary support portion and housing, satellite gear means rotatably mounted on said inner stationary support portion and coupling said driving gear with the internal gear teeth of said housing, a first bearing rotatably coupling said housing with said stationary support, said first bearing being enclosed within said housing above the level of lubricant to be contained in said housing, and a second bearing mounted on said inner stationary support enclosed within said housing, said housing including output coupling means rotatably mounted in said second bearing, said satellite gear means comprising a plurality of satellite gears including a pair of double satellite gears each having a larger diameter gear half meshing with said driving gear and a smaller diameter gear half rotatable with said larger diameter gear half and meshing with said internal gear teeth.