Fully 3D printed Wheel Bearing. No additional parts required. Slimmer spaced tolerances for a clean spin. There is not a whole lot of wiggle room for the parts to shift, only to do what they're supposed to. I noticed there aren't very many bearings that are 100% printable, and they are also pretty loose after assembled. This model I designed is surprisingly sturdy and smooth.
Infill varies on your use of this bearing. If it is just for fun, 15% would be just fine. However, if you are going to put any kind of load on this, I would suggest a higher number like 25%. This bearing can support 200 lbs with just 15% infill, however, with evenly distributed weight (I stood on it and spun around on my heel, until I off-balanced myself).
Careful when removing supports. The spinner can be delicate but the supports are necessary for the spinner to be centered when assembled, and for the tips of the posts where the wheels click into to be printable. Do Not Forget to remove the support on the Top piece in the center. I found it easier to remove with the snips included with most 3D printers instead of a pair of needle-nose pliers.
This model is meant to remain assembled once put together. Although it will come apart, taking it apart several times can weaken the strength of the parts that bend when assembling.
Overview and Background
Printer bed results. Only the Spinner and the Top Half (Left Side) have supports.
Cleaned up results. Please be careful when removing the supports on the Spinner. Although sturdy in the final product, the posts can be rather fragile when using pliers to remove the supports.
I noticed it is best to use the snips most 3D printers come with to remove the center support of the Top Piece.
After putting together the Spinner and Wheels.
Completed Bearing assembly.