Parametric Caged Roller Bearing

A fully parametric, print in place Roller Bearing with cage. No supports required.

The most recent improved version of this design can be found here: https://www.thingiverse.com/thing:3201208

These are certainly not as good as real bearings, or assembled bearings e.g. using airsoft pellets but as a printed bearing are good at holding low radial loads (e.g. a filament spool) with low friction. Using lubricant (e.g. silicon lubricant) can reduce the friction even further. They are relatively easy to print (as long as your printer settings are good, see below) with little post processing. There are small overhangs on the cage, over the top of the rollers, but generally do not cause problems for printing. (the tolerance between the rollers and cage can be increased if necessary). Let me know if there are any particular parameter settings that work well together or any improvements that can be made to the design.

This was originally a proof of concept type project, to see if it