Ahhh... that makes sense. I sure do miss the old JD Parts system which allowed us to see detailed specifications and illustrations on parts.The bearing has a small hole in it which is lined up with the grease zerk on the flange, I was asking the same questions to the JD parts man until I saw the bearing and flange at which time it became clear. Trust me, the grease goes into the bearing. This bearing set up is used on the hexigonal pto shaft on the feeder house of jd combines. Take the part numbers to your dealer and have them show you
Is there a reason that the original bearing flanges won't work? According to your photos and images I've found on-line of the flanges they look similar to the original.