SC8UU Minimal Bearing Carrier

thingiverse

This is a printable replacement for the stock aluminium SC8UU bearing carriers used on many printers, including the Anet A8. I designed these specifically for the Igus Drylin RJ4JP-01-08 replacements, but the stock LM8UUs will fit just as well. However the problem with the LM8UUs is they are designed for a much higher load than found on most printers and the ball bearings tend to slide rather than roll as they are designed to do, resulting in noise, and wear. If you go with the Igus Drylins, there's a weight saving of ~37g over the stock SC8UU/LM8UU combination, per unit. That's nearly 150g saved on the y axis of a typical printer. You will need 4x M4 nuts for each carrier. I used A2 stainless half nuts. Update: Although these will work fine on the A8, the one that meets with the end switch will miss the switch on some printers, So I've added a lug (as suggested by quualudes). So for printers other than the A8, for the y axis print three plain carriers and one with the lug.