I have one of these chippers. Great little chipper.
Take a look at the welds on the pins that the bearings pivot on. Look in the "hole" area just behind the main disc bearing and you'll see the pivot pins and their welds. Because of the placement, Bandit is only able to weld the top of those pins to the main housing. Mine had developed cracks. Very small and hardly noticeable, but the cracks opened up as the roller assembly rotated up, causing the assembly to shift. (One of the pins was no longer attached). This may be the possible cause of your bearing failure. If not, it is still an area on these small machines that should be inspected. When mine cracked, we just built up weld to an almost "gusset" like state. That has since fixed the issue.