The bearings have arrived. So having never changed an angular contact bearing before, I’m assuming you instal these with the writing facing upwards, in the same direction as pressure will be applied to the bearing from the cutting action? Which should force the opposing taper of the raceways together?
Right, I think I would have been better pressing the top bearing into the quill, then pressing the spindle in with the angular contact bearing on it, in from the bottom. You’d still need a bush behind the top bearing to stop that being pressed out of the quill.
Instead of pressing the AC bearing into the spindle then trying to press the spindle down, as that is likely to make the spindle want to push the inner race off the AC bearing, which is why I made a tool with the right sizes and a hole through it.
I don’t know I’m not a spindle rebuilder. Opinions?