Blade pivot of adjustable orientation and of reduced bulk for a turbomachine fan hub

A blade pivot of adjustable orientation for a turbomachine fan hub comprising:

• a block having retaining means at an outer radial end configured to retain a fan blade root and coupling means at an inner radial end, for the transmission of a torque;
• a ball rolling bearing for taking up centrifugal forces having an inner ring mounted in transverse support against an outer radial portion of the block;
• a clamping nut screwed onto an external thread of the block in order clamp the inner ring of the ball rolling bearing for taking up centrifugal forces on the block;
• a rolling bearing for taking up transverse forces having an inner ring mounted in transverse support against an inner radial portion of the block;
• a pitch setting transmission ring positioned inside the inner radial end of the block and equipped with coupling means cooperating with the coupling means of the block;
• and
• means for locking the pitch setting transmission ring on the block.