It's a lot simpler (and less expensive) to machine a ring for the seal to ride on, and Loctite it to the spindle. Then a bearing with the right ID can be substituted for that scarce and pricey one with the extended inner race.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!