Originally Posted by
Koyote
Buy grade 25 bearings in quantity, in the correct sizes, and replace those when doing the service.
I've found that, with good bearings and good grease (and plenty of it), cheapie hubs spin beautifully.
If the bearings have their original finish they are good to go. Any automotive grease is perfect for our use. A bike wheel spinning at 350 rpm is traveling at about 27mph. Not much strain on bearings that are capable of 10k
to 20k rpm.