That is a realllll temp setup that even I wouldn't expect it to make it worth my time to experiment with lol.
I've often wondered why hasn't a "conversion" been produced to a sealed bearing in a part once the races are pressed out. A thicker outer sealed bearing surface seems doable. Definitely would not be a common item, but it shouldn't be that horrible for the tooling to be created in order to make such oddity exist.
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-Oh Hey!