I once had to replace the bearings on my Miche hub.
First of all, you'll need to figure out a way to pull that axle out.
If it's bent, then I don't know, saw??!? and replace.
Next thing you need is a bearing puller.
Like this one:
It fits on the inner ring of the bearing.
Through the hub, on the other side, you stick a long thin screwdriver or rod of any sort and tap out the bearing gently. (cred. cavernmech)The bearing puller works by spreading apart. It is best to fix the hub on something so that it doesn't move. Placing it on top of an open vice padded with cloth worked for me.
Once you have the bearings out, 6001 type. (bring them to a bearing store, you can even get upgrades!)
To put the new bearings in you need to tap the new bearing in (outer edges) gently and evenly into the hub recess.
Make sure you put some grease in there too.
The one thing however is finding replacement cones and axles for the hub.
I still have not yet found any parts.
After I replaced my bearings I found out that the cones were damaged as well with flat spots.
Good luck anyway.
Last edited by lymbzero; 03-18-08 at 10:36 PM.