What sort of surfaces are best for steel/bronze bearings?
I thought to polish the steel shaft as high as I can (shiny!), but leave the bronze bearings as-bored, ie a little groovy. The bearings compress, so after wearing in I can adjust them back.
They are 22 mm and 18 mm dia, will run at up to maybe 10,000 rpm, lubricated, sideways loads only (it's the mill main shaft, with an integral ER20 chuck on the end, for a BCA).
Is this a good idea? Any ideas what kind of lubrication to use? Any suggestions? Looking for better-than-a-tenth (~1.5 microns) tir.
-- Peter Fairbrother