castle/neu bearing fail?

[nvtuning]

hey guys

the front bearing of my castle/neu 2200kv has alot of play on it
so much play the rotor touched the motor can.
Is this a often problem with the castle/neu ?
Because i just drove it for 4 battery's and didn't bashed it at all

here are some pics of my rotor you can see how it has some scares from touching the can

http://www.mijnalbum.nl/Album=JPLOSWYZ

greets nvt