I would replace it for peace of mind, howver, you may be able to use some emry cloth to Lightly remove the galling. I would be carefull not to go deep, but just remove any rough edges. Also be sure that no right angles exist as these are stress risors and will promote fatique cracking.
When using the emry cloth, try to spread out the buffing so there is a nice transition or no abrubt changes in material thickness. If you have any doubts replace the axle.
If you look at the collared ring next to the shoulder of the axle in the photo. You will see no right angle exist, this is the reason the edges are rounded.
Typically one would maintain a 3 to 1 taper to insure reliabilty, meaning the depth of the gouge would spead out 3 times the width for blending purposes.
Sorry and I don't mean to sound technical, but it is your axle which has a profound effect on personal saftey. This is also a precision peace with mating surfaces, I cannot see the depth but certianly excercise careful judgement. If it appears to be greater than...say.. 1/32" I would replace the item. Once again no notches, and no right angles. Just my honest opinion and I am sure others will find it debatable.
I would also investagate the root cause, there could be some sort of lap on the inner race of the bearing or something that would create this issue. If any doubt exist, i would replace the bearing. The tolerance is very tight, so I find a lap to be a far chance. Perhaps something in the speedo collar, something wrapped around the axle while your where riding. I want to say the shoulder of the axle is on the left side of the bike as the thread engagement area is on the left. There has to be somthing there that is very shiny or shows wear from this contact area.
"Pain is weakness leaving the body"
"Nothings possible until its done!"
"If ya can't afford the fine, take the lead!"
Last edited by Tollster; 08-28-2007 at 12:50 PM.