Greg
I am starting to realise more & more there are Bearings & Bearings.
Just had the boat trailer bearings changed because one side had "collapsed" I happened to notice it before they caught me out on the highway miles from nowhere, which was good.
The local marine bloke changed them because I have become too lazy & too busy doing other stuff. Besides it a messy job that I really dont like doing.
That said, I have repaired & fitted plenty, over the years, but these ones, just changed, only lasted 2 years, & the trailer axle never goes into the water. It really had not travelled extra ordinary distances.
I had a good look at the ones removed, & they had a lot of wear on both the cones & cups. They just may have been "cheapies"
regards
Bruce