Simple Pulley

This is a simple idler pulley.

The base is mountable, featuring a 9mm diameter hole centered on the bottom. There is a 12mm clearance from the wheel to the bottom of the mount.

The wheel features a tight-fit cavity for a common 608ZZ bearing. The wheel is meant to be secured to the mount with an 8mm diameter rod that is ~48mm long. The rod is kept in place by the force of the load and the tight-fit of the hole. I am using a carbon fiber tubing, of ~1-2mm thickness with ~50 lbs of load wit