Working - Ball Bearing V3

Hi All, i changed the design of Ball Bearing to make it working easier.
This version have the sphere cut in the base to prevent the Supports and changed also the tollerance.
https://www.youtube.com/watch?v=wb0ou78IvRo&feature=youtu.be
Here a youtube vide of this Ball Bearing working:
This is printed without supports.
Made in Cinema 4D