Bearing with mount

Print the bearing at 0.1mm. Note that your printer needs to be calibrated perfectly before trying to print this. If some parts of the bearing are fused together, use a flat screw driver on the notch of the offending ball, turn a little to the left, turn a little to the right and so on. For more severe fusions, use a sharp knife. Fusion plastic can be removed with a small metal file, there is just enough space between the bearing balls to do so.

The inside diameter of the bearing is 16mm, so a shaft for the bearing should have a diameter of 15.75mm.

https://youtu.be/BThvg2JMQe0