and.. the current Phil BB use a machined aluminum sleeve with shoulders for the bearings,

And a precise press fit between the bearing ID and the spindle diameter.

It is possible to pull the spindle through the bearings, and slightly adjust the offset of the spindle/axle

to be more or less symmetrical .. so 2 ways to tweak the chainline .. So, of the 2 A 113 would be a better choice


Add their optional, dust covers to further shield the bearings against contamination ..

they fit in the mounting rings .