Black particles in baking chamber

Hey r/Bread machines, I got a new old stock Welbilt dual loaf machine. I really like it. Over baking a few loaves, I noticed that small, black particles that are seemingly metallic or oily show up in the drive base and spindle within the baking chamber after baking. It smears on fingers as well. Pictures attached.

What is this? Is it bad? Should I not be eating the stuff this machine produces? Will it destroy the machine? Thanks