Inboard bearing assemblies having independent shoes

A tiltrotor aircraft having a helicopter flight mode and an airplane flight mode, the tiltrotor aircraft comprising:

• a fuselage;
• a wing extending from the fuselage;
• first and second pylon assemblies coupled to the wing outboard of the fuselage;
• and
• first and second proprotor systems operably associated respectively with the first and second pylon assemblies, each proprotor system including:
• a yoke having a plurality of blade arms including a first blade arm having an inboard pocket with a load transfer surface;
• a bearing assembly disposed at least partially within the inboard pocket, the bearing assembly including a centrifugal force bearing having an outboard mating surface and a shear bearing;
• an inboard beam disposed at least partially between the centrifugal force bearing and the shear bearing;
• a proprotor blade coupled to the inboard beam;
• and
• an independent shoe coupled between the centrifugal force bearing and the yoke, the shoe having an inboard mating surface that contacts the outboard mating surface of the centrifugal force bearing forming an anti-rotation coupling therebetween, the shoe having a load transfer surface that has a contact relationship with the load transfer surface of the inboard pocket forming a centrifugal force load path therebetween.