Bearing,Ball,1/2" is an OEM-compatible replacement component used with Koyo (JTEKT) equipment. It is identified by Koyo (JTEKT) part number 180860, SSR82RS.
Sheave:Blt,Flt Idl,1/2",3-1/4" is an OEM-compatible replacement component used with Rapid Pak equipment. It is identified by Rapid Pak part number 24133.