Hi
I am replacing my front rotors and wheel bearings and my Ellerys manual talks about packing the bearings with grease so that part is fine. but I noticed the old rotors seem to be packed with grease in the section between the bearings, so my question is do I need to pack the rotor as well as the bearings
thanks
Brian

Intersting subject,
My brother is a owner/operator of a Bearing sales company in Qld, worked for Saeco Bearings, CBC, and SKF over the years. He has told me it is possible to over grease a bearing, and other Bearing sales people have told me the same thing. If you were to look inside a standard roller bearing by removing the dust shield - you would see the bearing is pre-packed with grease. When the bearing manufacturer tests bearings in its quality control stage they test for maximum speed the bearing will rotate at before seizure, temperature and load rating, and a heap of other things. All this is part of the calucation into the precise volume of grease to pack into the bearing. So there are many more things about the humble bearing than meets the eye.

Must say, I was only ever shown to pack bearings very well, pumping grease until bearing cage was full, no air cavities. Then a quick wipe on the inside of the hub & stub, to coat each with a small amount of grease for rust protection more than anything else. A little more on the bearing shells. Then re assemble. Also told never to overfill. The only grease that is of any value is the grease packed in the cage of the bearing, the rest never makes it way into the bearing, ever.

Utility8