About this 3D model

Here's a set of v-groove bearing covers that press-fit over standard size bearings. The SCAD is parameterized so to fit other size bearings (or even just a hole instead of a bear). I've included STLs for some standard size bearings, although you will likely have to adjust the tolerance variable in the SCAD file to get a good tight fit. If all else fails you might try heating the bearing then press-fitting with a pliers. PLA is no match for a hot bearing. :-) These are probably reasonable stand-ins for metal vgroove bearings for a light duty application (e.g. a string pulley or a mockup). It would not be appropriate to use it for anything weight-bearing.