Way back in my hazy youth, I remember a company in Keene NH called
Miniature Precision Bearings. Many years later I came across them
again, as providers of super small high-tech bearings for space and
military applications. Interesting development: They now make
ceramic bearings too, which of course won't be damaged by your
pickle. The address below is probably what they have morphed into.
Timken Aerospace & Super Precision Bearings - MPB
7 Optical Ave, Keene, NH 03431