First, on behalf of SKF, let me correct that. That formula is NOT applicable for any tapered bearing or any bearing with removable races and that's ONLY for a "first fill" and to be used ONLY when no other lubrication regime is known. ( that's why when you call me to spec out a lube regime and amount/frequency" I have to plug a lot into the SKF calculator) The reason its "first fill" only is because once grease gets initially worked, the density changes so all those amounts based on "new volume" go out the window. During replenishment, , theoretically" that new grease at a higher density by volume will displace grease at a lesser density but there are a whole lot of variables as to why that often doesn't work. This is why on SKF housings (plummer and PB mainly) you will see a packing "fill line' and various ports depending on the initial fill and relubrication requirements of a specific application. Based on the excellent pictures you have presented- you basically have a primary contamination issue most likely coming from a combination of fitment and tolerance issues allowing ingress and capture of salt water which churns with the grease, combines with it and coats your bearing then disintegrates it until asperities fail then catastrophic failure. I would recommend mic'ing everything to make sure it will hold the bearing tolerance and centerline, beading and coating the inner hubs with insulating enamel (as we do machine castings to form a barrier) and possible upgrade to a finger seal ( rather than a typical garter spring) like a Garlock Klosure, set clearances properly and pack to 100% fill. That's based on your failure account and the pictures provided.
Originally Posted by JHZR2
There absolutely is a max amount of grease, for example, I found the SKF formula G = DB/10, where G is grease in ounces, D is bearing outer diameter, and B is bearing width. There's something also to be said about the amount of grease for a given speed of the bearing. These never see over 25mph. But I'm not aware of that calculation.