Best is to drill about 28mm from the end, here the hole is a few millimeters less. Just enough clearance to bearing. One should be careful where to drill (especially if bearing are in place), there is not that much space to play with.
This pic shows the location of the outer bearing
The outer bearing is the smaller one without internal seal. New bearing in place
Inner bearing has an internal seal and is flush fit
Inner and outer seals
