Planetgear

A planetary gearbox includes a sun wheel rotatably supported in a gearbox housing and having an external toothing, a rotatable hollow wheel, and a planetary carrier rotatably mounted in the gearbox housing. Planetary wheel bearings mount planetary wheels on the planetary carrier for rotation about planetary wheel axes of rotation. The planetary wheel bearings have external toothings which engage with the internal toothing of the hollow wheel and the external toothing of the sun wheel. Each planetary wheel bearing includes two annular bearing elements which are traversed by and held in fixed rotative engagement on a planetary wheel pin. The bearing elements have each an outer peripheral surface shaped to define a cone-shaped sliding surface such that tapered ends of the bearing elements point to one another and a running surface of an inner peripheral surface of the planetary wheel corresponds to the sliding surface of the planetary wheel bearing.