Print In Place Bearings with Tolerance Calibration

Problems with other 3D printed bearings like “no cage” or “too loose”?
Just print these, they are easy to print and after a few test prints, you have a good fit.

Dimensions

• Outer Diameter: 22 mm
• Inner Diameter: 8 mm
• Height: 7 mm

Tolerances

To achieve higher tolerances, I used the same techniques as Matvey Kukuy in his Ultimate 608 Bearing with Calibration Kit V2. Basically you have to optimize two variables, in this case:

• Horizontal Tolerances (HT)
• Vertical Tolerances (VT)

The values can be found in the Filename (608-BEARING-HT-VT). For the optimization, a binary search algorithm can be used. Please refer for this to Matveys Kit, I got it from his site, so I don't want to take the praise for it.

If the calculation is too tiresome for you, I (and ChatGPT ;) )  wrote a graphical program for this specific use case. The executable and source code can be found on GitHub. 

Print Instructions

• Print one at a time (otherwise smaller defects might form and increase tolerances)
• I printed mine with 0.1 mm layer height, higher might also work

If you want other sizes, just request them, I have an easy creation workflow now.

Quantitive tolerances instead of “tight” and “loose”.