On Wednesday, July 24, 2019 at 1:20:20 PM UTC-4, Ignoramus821 wrote:
All regular ball bearings are very cheap nowadays and even cheap ones
are well enough made for miscellaneous use. Enormous progress in
making them cheaply and industrially. No need to hoard bearings, just
buy them as you need them cheaply.

i

And for a lot of applitions you can use uhmw pe. Much cheaper than bronze sleeves. You can buy rod of it from Grainger and MSC.

Dan