In a toroidal type continuously variable transmission, first pivot shafts provided
on both ends of first trunnions are supported within support holes formed in yokes
secured to an inner surface of a casing. The support portions are provided with
ball splines and radial needle bearings. During operation, loads acting on the
first trunnions are canceled within the yokes. Axial displacements and rocking
displacements of the first trunnions are effected smoothly by the ball splines
and the radial needle bearings.
