Prusa MK3(s) Y-axis Igus Bearing Housing

thingiverse

NOTE: Update again for R05. Print bed was loose (R04) and could be wiggled approx 3mm up and down at it front and back edges. I tightened up the hold on the bearing OD and suggest you use nylock nuts (same as came with prusa kit) with M3x16mm screws. I tightened the screws until hand tight then backed each off 1/8 turn at a time until bed moved by hand with just a little resistance. Now i've got no wiggle, no vibrations, and smooth pritning. Finalized Dimensions with R04. Turned out the retaining ridges were coming out a little wide and squeezing the bearings making them too tight on the rod and the bolt holes to go out of alignment. R04 printed with the bearings being lightly held from rotating in the housing and assembled fine to the Y axis rods. I do have a little up and down clearance in the yaxis with R04. I'll make a R05 this weekend that should tighten this up but i have not had any issues printing 8+ hrs so far. ----------------------------------------------------------------------------------------------------------------------- Went to put my new Mk3s together and the ball bearings were crunchy and nothing close to my Mk2s Haribo edition with IGUS bearings on Y-axis and X-axis. Amazon one day shipping to the rescue but my 3d printed bearing holders from VonPitter had unneeded thick flanges for the hex nuts to compress. This made it difficult to find screws that were long enough without causing interference with the frame as it passed by. So I designed these from scratch in a hurry to be able to put my printer together tomorrow night. Should work on LM8UU and IGUS RJ4JP-01-08 bearings. Printing in black PETG, 5 perimeters, 30% fill.