Constant velocity joint spider and constant velocity joint therewith

A constant velocity joint, comprising:

• a housing body having an inner surface bounding a bore, the bore extending along an axis between a first housing end and a second housing end;
• a plurality of guide channels that extend axially from the first housing end toward the second housing end with the plurality of guide channels being radially spaced apart from each other about the longitudinal axis by separators;
• a spider having an annular body with a through bore extending along a central axis and a plurality of trunnions, each trunnion having an outer surface extending radially outwardly from the annular body in generally transverse relation with the central axis to a free end, each outer surface defining at least one running surface;
• and
• a plurality of ball assemblies, each ball assembly supported for rotation by the at least one running surface of a separate one of the trunnions,
• wherein the free end of each trunnion has a convex first portion having a first radius and at least one convex second portion having a second radius, the at least one convex second portion extending between the convex first portion and the at least one running surface, the first radius being greater than the second radius.