Ok i looked at the parts Fiche and it lists the original Part numbers as
43432-KA3-730 Collars (need 2 of them)
91272-KA3-711 Dust seals (need 2 of them)
these numbers may be superseded by others
the Spherical bearing is not shown as a separate time, but if my cloudy memory is right i think it is a standard "IKO" brand and can be sourced from a bearing supplier if you pop the original out and measure it up and take as a sample.
as Brad said EBAY USA is you best friend here for CR500 stuff, nothing available 2nd hand here pretty much.
and welcome to the Red side
just got to work on Hilly.