Bearing Mk. l

I have failed to find the perfect bearing for my needs so I decided to make my own. This is what I can up with. It uses 8 cylinders instead of balls to increase printing results. Scale this object and edit it to fit your needs!

You can download or use the program Autodesk123D Design to add your own shaft hole (that sounded weird :|). Just snap your shaft onto the face of the inner circle, lower the shaft into the model, and subtract the shaft from the bearing. There you go, you own customized