Vision R42 (probably R40 also) chain pulley
thingiverse
The original pulleys on my bike have only one, centered, bearing in them. Through the years this has broken loose and now the pulley wobbles. This replacement uses 2 626-2RS bearings and will stay in line. Since the bearings have been moved out to the edges of the pulley, I needed a shorter spacer, so that is the second file. I also needed to buy a longer bolt at the hardware store, sorry but I can't remember the length. I used TPU at 100% infill.
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