I have eight large Dodge Pillow Block Bearings on Hammermills. The Mills are fifteen years old but still in OEM condition. We have fought these bearings overheating from day one. The problem is, the gap that the excess grease escapes from becomes full of dry, hard grease then the new grease sits in the bearing and churns building up heat very fast. Using Phillips Multiplex FS 220 now. Is there anyone that has ran into this problem? Any ideas welcome!