Belt Idler Pulley and Holder for X and Y Axis

The Belt idler bearings on my X and Y axis popped, so i designed a basic belt idler using x2 624zz (4mmx13mmx5mm) bearings and a holder for the idler.

I have also included the original Solidworks files which allows you to change/modify the parts to suit your needs.

Update: 23/11/2016
I have added a slot into the base of the idler arm holder to allow an M3 nut to be fitted into the holder, and the wall angle on the idler pulley been changed from 50 to 70 degrees.

The most recent CAD