CT200 rear wheel bearing failure?

#1
Anyone know why the bearings would be failing so quickly on my bike?

Bought it used off craigslist with a blown out wheel bearing, replaced both of them and within a few weeks here both rear bearings are gone again.

Alignment off?

Bolts too tight on rear axle?

Chain too tight?


Not really sure what would be killing them so bad, any ideas?
 
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