+1
Maybe similar if not identical to Shimano XT outboard cartridge bearings. Although Shimano doesn't recommend the bearings being extracted, some enterprising bike mechanics do. All said, as in the case with DA BB used in threaded BB etc, probably just easier and close to same economics to replace the entire BB and not extract the bearings. If bearings become spent, though maybe worth a look to extract them and see if a generic bearing could be used as a replacment.