After my first rear bearing fail at 10K, I'm now at 23K and the the right bearing showed excessive play.
I noticed awkward behaviour when cornering, so I decided to check.
Time to change again.
Reading trough all the posts on bearing failure, their life span seems aprox. 10-15 K. (kilometres)
I'm getting quite handy with this repair
took me not even 30 minutes.
how many bearings change? only the damaged or 3: 2 of the wheel and 1 of pinion.
For me it was the right bearing, disk side. Center bearing felt not quite right, so while at it, I might as well change that one too.
Sprocket carrier bearing still seems OK.