Prusa i3 Bear Bearing Holders

thingiverse

Bearing holders for my Prusa i3 Bear Upgrade are designed specifically for the upgraded frames. They are not compatible with original Prusa i3 MK2(S), MK2.5(S) or MK3(S). Only for Bear Upgrade frames. Supports all Prusa i3 Bear Upgrade versions: Half, Full MK2(S)/MK2.5(S), and on Full MK3(S). Strong and solid bearing holders are designed to work with standard LM8UU bearings, Igus RJ4JP, Misumi, and Motedis bearings. Bearing are perfectly centered due to the non-centered holes of the MK2 Y carriage. A clean shape is used to avoid any printing artifacts. Require a perfect alignment of the Y axis for proper installation. Open source and parametric design (STEP and Fusion 360 files) are available. Hardware needed includes M3x16mm screws for Half Upgrade, and M3x25mm screws with locknuts for Full Upgrade (all versions). Installation involves marking each bearing holder with a dot: * 1 dot: Half Upgrade * 2 dots: Full Upgrade MK2(S) and MK2.5(S) * 3 dots: Full Upgrade MK3(S) For Half/Full MK2(S) and MK2.5(S), the mark must face outside the printer. Do not tighten them too much! Follow the same instructions as the original Prusa i3 manual. Changelog: 2019.09.09: Easier to install/remove bearings, improved print quality and settings, switched to 0.2mm layer height. 2018.02.13: Dot missing on half upgrade version