Easier than I thought. Bearing kit includes the inner bearing, outer bearing, seal and cotter pin. The biggest obstacle was knowing what I had (axle) and then the bearings to fit it.
once I figured out what I had---7000 # Dexter axles, and then looked up the Dexter part numbers (catalog in the owners stuff)---then I went to etrailer.com (prices were a heck of a lot better than Dexter)--their web supported easy part number search, --about $18 a wheel for the kit.
Thanks for the sources.
Gary