Just get some new bearings. If the shaft and snap ring is damaged replace that also. Is that a comet on a no name china?
Looks Chinese:
Bearing failure is not a major surprise.
for the originator of this post.
" Sorry some of us are not up to your standards on mini bike knowledge "
I am left with the impression you didn't put much effort into solving this for yourself.
I fix scooters and bikes around here for the kids.
I get Its Broke Mr NOS can you fix it.
Little thought or trouble shooting went into it for them.
They just assume to dump the problem.
Well I donèt fix it for them much these days.
I help them, I open my workshop door and we bring it in and out comes the tools.
But I make them work for it.
I tried to make you work for it too.
So what if the OldMiniBikes was not here
What would you have done
We live in an age where most of the answers are easy enough to find with a search engine and research.
But you hit the easy button and asked us to solve a simple mechanical problem.
Do you think I am being difficult and harsh.
Because I wanted to push you to say I think I see the trouble rather than ask someone to make a decision or plan for you.
The world is plenty full allready of people that can't make a decision or trust their own ability.