any force you apply to a bearing has to be applied to the inner race only- as the inner race is in contact with the crankshaft. Pulling off a used bearing with no intention of re using it, tap on outer race if you want. It will move, just slowly. Installing new bearings, I grease the shaft journal and use a piece of tube steel to tap the inner race only. You could tap lightly in a rotary motion to work it on, but that tends to get it cocked and locked .
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