[Mike B]

I looked high and low for an "inside" knurling tool a few years back, for this (similar) issue...in my mind I envisioned an expanding 3 knurl tool that would knurl a 2 inch hole by hand.

Never came across one, so ended up bending and quenching a center point and peening the ID, adding loctite bearing retainer, and ran it that way for years...was a Dana 44 rearend pinion hole, probably not the load a hub would ever see though, but worked fine for me.