After printing few bearing from other people, and finding out that inside rolls are not tight enough, I have made my own one.
Outside diameter 52.2 mm
Inside diameter 15.05 mm
v1 Hight 10 mm
v2 Hight 10 mm bigger rolls
PLA works fine, 0.1 is best but I suppose 0.2 is good enough. Break rolls after printing. You can add something like technical vaseline to make it rolling even smoother.
***Feel free to download .f3d file and edit diameters.****
The author remixed this model.