I wasn't happy with other bearing covers/flanges I was seeing, so I wrote this scad file to produce this v-roller.
Defaults to a good size for a 608zz bearing, but can be customized to whatever dimensions you need.
Provided .stl is produced from the defaults, with 512 segments.
Amazon Basics PLA
As you get to a larger delta between inner and outer, you may need to enable supports in your slicer.
Tolerances for my printer were such that the bearing must be installed from the top (side away from print bed) due to the first layer squish blocking passage.