Cl-260 Ultimaker Max carrier belt tensioner for bearing with 12mm outer diameter like most brass, PTFE and POM bearings
thingiverse
Optimized for 24mm long or two 12mm long bearings with a 12mm outer diameter like Misumi JZF8-12 which is currently being used but also works well with all other bearings having a 12mm outer diameter including many brass PTFE and POM bearings. Tested using PETG material at 40% infill with a 0.2mm layer height and three outline perimeters resulting in excellent performance. To assemble this component one needs a 40mm M3 screw and nut plus another M3 screw typically woodscrews are the best choice for this application if it requires touching the endstop. Update History: V1.1 Introduced a second arm to accommodate an additional end-stop-screw on the opposite side. V1.2 Centered belt holders in line with original pulleys reducing the number of necessary screws. V2 Designed more massive and stronger arms to secure endstop-screws while achieving a tighter fit for belts making it compatible with 10mm GT2 belts and requiring only one M3 screw.
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