TT02 ball bearing bell crank
thingiverse
I made a bushing as an analogue until bearings arrive from overseas, but then I got my TT02 bell crank working with 3x6x2.5 bearings. The bearings have been installed now and the bellcranks are up and running smoothly. I had to do some minor hole cleanup using an xacto blade because they were a tight fit. Depending on your printer settings and calibration, you might need to do this too - my printer tends to print holes on the small side.
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