Disneys ships dont use standard bearings. I'll try and find the article Scott sent me but there different. They also use seawater as the lube instead of oil. From what the article said the Magic which got them when she was built still has her original bearings and shafts. Theyve been installed on all 4 ships and probably the next 3. Theres been very little wear on them. I want to say Princess uses them also, and had similar results and changed them at 20 years only because they were 20 years old but could have gone for another 20 with the limited wear theyd incurred to that point
Found it
Shaft Bearing
I take it back. Princess was recommended to change at the next drydock but did it early since the ship was already high and dry. Disneys as of 15 were still in spec