Bearing roller for 1/2" EMT conduit

thingiverse

This roller is designed to fit a half-inch EMT electrical conduit. To make one roller, print two pieces. Each half of the roller accepts a 608 bearing. I printed this in PLA with the bearing hole facing downwards towards the print bed. There is an integral support in the middle that can easily be removed after printing. I also found the tolerances to be somewhat tight on the outer diameter of the bearing. A standard 608 bearing has an outer diameter of 22 millimeters. I made the hole 22.2 millimeters, but it could have been made slightly bigger. The problem is that you do not want any play after the bearing is installed because it would affect the accuracy of the part if you need precision. Print Settings: Printer Brand: RepRap Printer: I3 Rework Rafts: No Supports: No Resolution: 0.4 millimeters Infill: 40%