Buy a 3/8" concrete anchor. Place the expandable part of the anchor into either side bearing and tighten the anchor nut until the expandable end of the anchor expands tight in the race.
From the other side, using a drift pin, metal rod or large screwdriver against the anchor base, drive the bearing out with a hammer.
Once one bearing and the spacer is out, using a close to bore size socket and extension, drive the other side out.
No need to remove the seals first as they will drive out with the bearings.
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