16mm Sleeve Carriage for Rostock Printer and Igus Linear Bearings
by jpickens, published
Metzench designed an open 16mm saddle carriage for the Igus RJM-01-08 plastic linear bearing. The Igus bearings require a 16mm bushing to "squeeze" the ribbed bearing to 8mm tolerance. I modified the SCAD from Johann's original Rostock carriage to have a 16mm enclosed sleeve for holding the bearing.
I should add that I am currently building a Johann's Rostock with 8mm rods, and hope to use these simple and cheap bearings instead of the loud and expensive metal ones. We'll see how it goes.
Print with 1 shell and at least 50% infill.
My ToM leaves a slightly undersized 16mm nominal sleeve.
Used an adjustable reamer from Harbor Freight to true up the sleeves.
Set the reamer to 15.8mm, and this gave a good squeeze on the Igus bearing to ride the 8mm rod. Maybe even too tight when I mocked it up. But better to start undersize and work up.
Please let me know what you think.