exploded flywheel bearing?

Bascially I just took apart my tranny, because it was making one hell of a noise (sounded like gear noise) all the time. Took things apart and discovered my flywheel bearing exploded. Like it was toast, ball bearings where everywhere and bits of the housing where scattered around.

I just put a new lightweight flywheel, clutch and pressure plate on (as well as new bearings) when I did my b16 swap.

Has this ever happened to anyone before? What type of bearing should I get so this doesn’t happen again? Could this screw my tranny (currently unsure if it’s okay or not)

Update, tranny is done :frowning: