LM8LUU/LM8UU Bearing Removal and Installation Tool

thingiverse

A simple tool to press bearings out of (and back into) mounts, housings, etc. I needed to replace one of the X-carriage mounts on my A8 to accommodate a replacement idler pulley that was wider than the original; this made quick work out of removing the LM8LUU bearing from the original mount. I had already pressed a replacement bearing into the replacement mount, but I suspect this would've also worked well to install the bearing. A few light taps with a small hammer on the plastic rod is all it takes. I sized this for the LM8LUU bearing in an Anet A8 X-carriage mount. You can tweak the OpenSCAD file for other sizes; I'd recommend sizing the rod 1 mm under your bearing's nominal outer diameter and the cylinder 1 mm over. You should be able to print them at the same time.