So, if you have a problem with a locked-up gizmo...
We have a sort of zert-syringe that you can load with oil, and then you go to pound-town with it.
And it'll blow through a lot of stuff.
FWIW, Bridgeport milling machines have zerts, but are only supposed to be lubed with way oil on the ways - not grease. And a lot of folks will use grease, and then marvel when their table locks...