Are you intending to take the entire knuckle casting to a machine shop for the press-work, or use one of those on-the-car arrangements which relies on bolt threads for the force? What I do is remove the axle bolt (tire on the ground for this) then disconnect the caliper, take off the disk, disconnect the ABS cable, then disconnect all four ball joint studs and tie-rod end ball stud, often easier said than done. Tote the whole thing plus your new bearing to the NAPA shop, or wherever.