Your blades are upside down Terry. The flat side goes down to the grass you leave, the lifting tabs lift the cuttings and vacuum them out of the cut grass so they get blown out the chute.
Those are sealed bearings in the spindle housings. They add a zerk so you can add a little grease, but you don't want to force it out through the seals. The good news is they will probably last a couple seasons, and the bearings alone are only a few dollars each.
The spindle housing you took off was already broken, the fractured surface was dirty and corroded, it would be fresh and shiny if you broke it taking it off.
those blades are upside down, wings need to face upwards. A few pumps of grease is all you need, and depending on use, every 3 to 4 months should suffice... packing them full will cause excess drag and pre-mature belt failure and run the engine harder under load
