Ball size to ball bearing lookup possible Just found a tiny metal ball in my bike fiddling corner. I haven't worked on any ball bearing since the last cleaning, so I'm a bit confused where it might have dropped out of. It's pretty exactly 3mm in diameter. Is there any chance to infer which ball bearing it may have dropped out of at some point?
Pedals usually have 1/8". Depending on how you measured the diameter, maybe that's what you found. I think you'd notice fairly significant play in the pedal for a ball to have fallen out though.