Ball or barrel rollers I’d guess (but might be wrong) need to be more snug, so the rollers fit matching shape in the race.
Tapered rollers (Timken) fit the straight profile in the race at a range of adjustment.
Only manual I have handy that covers ball, tapered, and “spherangular” front wheel bearings is the 1953 GMC 100-400 maintenance manual.
Ball and sphearangular are treated the same and are different than tapered roller:
Torque to 33 foot-pounds while rotating hub. (40-55 for tapered rollers)
Back off nut at least 1/6 turn and not more than 1/4 turn.
With brakes released and not dragging grasp tire at top, pull back and forth. If bearings are properly adjusted movement of brake drum in relationship to backing plate will be barely noticeable and wheel will turn freely.
