crayZwhiteboy
Spectator
Its the heat created from them spinning and certficual (sp) force that gets grease Off the bearing. There really should be a dust cover on em...but if it were mine id pack the fuck out of it and put the old,cap on em
+1 on this. The heat loosens the grease and the spinning motion moves it outward.
With a rubber seal there the grease not only has no where to go but is being constantly pushed back in between the balls.