Ender 3 v3 KE + SE Adjustable Y-axis Carriage

READ THE INSTRUCTIONS CAREFULLY BEFORE INSTALLATION

I made these replacement carriage when I realized I couldn't get any replacement parts where I live.

They feature a way to tighten the bearings and to easily change them. It's also longer than the stock one to make it more stable.

The 3mf file I uploaded has ready to print support painted on them so they are easy to remove.

BOM (for two carriage):

 - 6x M3x12mm bolts

 - 6x M3 nuts

 - 8x M3x6mm heat set inserts

 - 4x 24mm long replacement bearings (either Drylin RJ4JP-01-08 or standard LM8UU)

 - 1x M3x16mm bolt (or longer for setting the nuts in place)

 - Lock Tite is strongly recommended

Assembly:

 - Set in the three nuts in their holes using the longer bolt

 - Install the heat set inserts

 - Put in the bearings so they sit flush on each side. It is recommended to offset them from each other

 - Put a drop of lock Tite in each nut

 - Hand tighten the bolts starting by the outer ones

Installation:

 - Follow the instructions for disassembly / assembly of the printer (if needed):

     https://www.youtube.com/watch?v=RDinQ2YF32Y

Once you have the rods disassembled:

 - Clean the rails thoroughly

 - If using Drylin bearings:

     - Try fitment of the carriage with the rod. A little bit of play is expected. There shouldn't be too much resistance when moving them.

     - If it's too lose, tighten the bolts a quarter of a turn at a time starting with the outer ones.

 - If using metal bearings:

     - You can tighten the bolts 3/4 to 1 full turn. Too much tension will cause fatigue in the plastic

     - Lube the inside of the bearings and install

Please let me know if you have any issues. I only tried them on my printer after all

I would love to see your setup if you print these :)