You need a grinding wheel. You need a long drift with a flat tip. The grinder is going to do double work. A heavier hammer is the way to go both in and out.
You may mark the center collar, so a rat tail file if you need any dressing, pounding that flat drift right at the edge of that bearing and center collar.
Whack at clock numbers like cross over or use a star hammer pattern. The bearing needs to come out like do not cock the bearing by hitting the one side to cause the effect.
Keep that drift's tip flat and sharp at the edges.
Best way to start the race or bearing is to use a rawhide mallet. Home it straight and as flush as you can with the mallet.
Back to the grinder with the old bearing. With a screwdriver shaft, you let the bearing spin on the grinding wheel till it drops in the bearing carrier. This was prepped before you pounded new bearings in. If you use this method of one bearing over the other, the mallet should slowly get you there if you rather not use the big guy to send it home. You'll hear a distinct 'ting' or hammer sound change as it hits the base of the machined center hub. Stop hammering once you hear the change.
Slide the axle through, see if she glides right in? If it did, she is X to Y perfectly sent home square. Nothing you can do, you hear more ting the axle nut torques down the tiny rest.
Tormenting the motorcycling community one post at a time