Huh, that’s alot.
I looked in a NSK engineering pdf and found 30% to 50% was the standard fill volume if greater than 50% speed rating. Less than 50% rating, 50% to 66%. Timken same. I filled a small syringe with a plastic tip and divided up the volume. Video helped me there. Yes Kluber iso 15. It looked a little light so I added a little more. Not much. Worked it in and pushed any spillage back in. Ran the spindle up down backwards forwards for an hour or so 3 or 4 times. I did this with only 5 hours on the spindle?
Overhauled F18 engines in the Navy for a few years, complete engine repair. Split race bearings in those have to be flat to 0.0005".
Have to wash new bearings for new grease!
Lots of inspection.