Electrical submersible motor radial support bearing

An electric submersible motor comprising:

• a series of rotor sections rotatably coupled to a motor shaft;
• the motor shaft extending longitudinally through a stator bore, the stator bore having a keyway and a longitudinal axis, the motor shaft bendable out of alignment with the longitudinal axis;
• a carrier secured to the stator bore by a key protruding from the carrier and mated to the keyway;
• a particular rotor section of the series of rotor sections separated from an adjacent rotor section by a roller bearing;
• the roller bearing comprising:
• a rounded roller cage between a rotatable inner race and a non-rotatable outer race;
• the inner race inward of the roller cage and rotatably secured to the motor shaft;
• the outer race having a curved inner diameter forming a roller cage socket, an outer diameter of the outer race non-rotatably secured to an inner diameter of the carrier;
• the roller cage and outer race forming a spheroidal joint as the roller cage pivots off the longitudinal axis of the stator bore as the motor shaft bends.