Hi all:
I had this annoying squeak come about from the spindle cartridge, I was in the middle of a project and did not feel like tearing into the cartridge to re-grease the bearing. I know my bearings were being washed out by the spray of coolant, so I simple followed suit with a thinned out grease that I blew in with compressed air from the bottom. Quiet now and very smooth running.

This is something I thought I would share, I by no means imply that this is a solution for replacing proper maintenance, but maybe someone might find themselves in the same predicament and will find this idea useful.