3D Printable Bearings

I love the original design for how smooth the bearing works and how much load is able to bear, both radial and axial. In the end I needed more bearing sizes, and scaling the original to 200% caused it to have too much slack (even using the tightest version).

Bearing was modelled from scratch using FreeCAD, I'm including project file to allow you to generate any bearing size. The results are surprisingly consistent with clearance equal between rollers themselves and between the rollers and races.

If after changing the bearing size model can not be recalculated, try to:

1. decrease Roller Maximal Diameter Height - it is height of a wide end of a roller, values around or less than 1/5 of Bearing Height are OK
2. increase Roller Minimal Diameter - it is diameter of a roller in its narrowest slice, set a value a few mm lower than Roller Diameter

Please leave me some feedback on what can be improved or if it has helped you in any way.

Update 2020-12-15: I've uploaded non-broken version of project file. Use FreeCAD 0.19+. Everything should be fine with parametric constraints now.