Searched through the Timken bearing catalog at the parts store today. In that catalog there were no matching cone and race with a 1.25" id and 2.563" od. Btw both rotors do use the same seal.

HD rotor inner set5
I.D.:1.3750"
O.D.:2.5630"
Width:0.7100"




LD rotor inner set6
I.D.:1.2500"
O.D.:2.3280"
Width:0.6250"