Not sure if re-packing them is a good idea. Bearings that have seals like the ones we have on our bikes were not really designed to be serviceable. For one, they lack a bleed hole for excess grease to escape. Putting too much grease is just as bad as having too little. Conical bearings like axle bearings on cars and whatnot are serviceable as excess grease has a place to go once the bearing starts spinning, thus avoiding an issue with over lubrication. You can do what you want, but axle bearings on our bikes are a pretty vital component that needs to work properly for many miles. This is one part that should not require periodic servicing at all. A quality bearing should last much longer (if installed properly) than the ones that failed on my bike. I did some digging into the origin of the bearings that are installed from the factory. They are "special" bearings made specifically for BD. They are also supposedly from China and the ABEC rating is unknown as well as the type of grease used, etc. This information was given to me from the company I purchased my bearings from. Granted, they could have given me biased information just to get a sale, but they were not trying to push the type of bearing that I went with, so I don't think they were trying to get me to buy from them. I have worked with these people numerous times over the years and the sales staff there is pretty stand up.
Do what you want, grease them and try to save a few dollars, I wouldn't, I didn't, and I would advise anyone to do the same as I. If these bearings have a catastrophic failure, they could potentially destroy the hubs that they are pressed into as well as damage the axle shaft that goes through them.
What costs more money, three bearings from a reputable manufacturer, or a wheel hub (or two), or rear axle and the asspain of trying to take it all apart.
Hey, you already have it apart. There are two ways to do a job, the right way and the wrong way, you decide.
:2thumbs: 
