[Joe K]

There is a "preload" required on that bearing. Somebody may have "overloaded" the pre-load, the bearing caught and spun.

It normally takes a "tool" to pull the bearing/shaft from the housing. An "extractor." Mitchell sells something similar to the KRW tool traditionally used.

It is possible to use a "scissor jack" and a block of wood on the disassembled punkin.

$15 housing part on Ebay. Provided it too hasn't been "wallered out."

Have your NEW bearing in hand before purchase, so you can do a "receipt inspection."

Joe K