What would cause my barely used green bearing to do this?

killnine said

I installed these dutchman axles a few years ago, and they have very few miles on them. I pulled them out today to replace the pumpkin, and this is what I find. What in the world would cause this? This is just the one axle.

View attachment 1715732007 View attachment 1715732008

Full size pictures
http://www.semisynthetic.net/kill-9/gallery/albums/userpics/10001/20210502_155032.jpg
http://www.semisynthetic.net/kill-9/gallery/albums/userpics/10001/20210502_155059.jpg

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They look kinda dry, what grease were you using?
I have had 3 different 8 3/4 rear ends with green bearings, many hole shots thousands of street miles - no issues.
When you installed them did they slip right in by hand or did you have to force them in?