this is bearing with very good clearances so it can rotate easily and at the same time its strong enough to stand up with loads ..
and it designed in perfect way to minimize the support ,
in this youtube link you will see the time lapse of printing and the final product
** if you want to have a good print please stick with the support properties in the picture above .. " the important thing that the support fill amount 30% and the distance x/y = 0.4 " these properties will guarantee to remove the support easily without any effects on the balls ...
** i printed it with PLA+
printing with PLA is more reliable ...