Becky in parts at Cruiser was very helpful and downloaded the trailer axle manual to my computer.
They use Lippert Components, Inc. axles with the SuperLube hub.
They are similiar to the bearing buddy in that you remove the rubber hub center cap and use a grease gun to pump in grease that goes to the rear bearing and forces grease out the front when it's full of new grease and be sure to spin the tire/wheel when pumping in new grease.
The manual says to pull the hubs ever 12,000 miles or annually to visually clean/inspect the bearings. The seals MUST be replaced whenever the hub is removed from the axle.
The manual says to use Lithium Complex grease NLGI no.2 such as Mobilegrease HP; Exon Ronex MP, Kendall L-427; Valvoline Val-pex EP grease or Pennzoil Premium wheel bearing grease 707L.
And yea, those cheap chinese wheel covers are junk.
2012 Fun Finder XT 276 Toy Hauler & Harley Davidson Ultra Classic with Condor wheel chock
2014 Dodge Ram 2500 AT 4X4 Crew Cab 6.4 L Hemi, 373 gears, tow package, Rambox option, Revolver X2 tonneau cover, Equal-I-zer anti-sway hitch.