wow, that bearing doesn't even look like a bearing any more. I'd have to agree, it must have been defective and just came apart. If you got it locally I'd be showing him the axle...or sending pics to the dealer if you bought it online. I would hope any dealer would help you get any parts you need. It should be on warranty.

 

frenchman159, FYI, Let me paste a sketch of the rear axle structure,please.
I think the damaged collar sheath and oil seals should be replaced with new things as well as the bearings.

 

Welcome to the forum frenchman159![img]i/expressions/face-icon-small-smile.gif[/img]

Chinese bearings with little or no grease dont last long Forget getting free replacements, find a Japanese bearing that is the same size. Id also replace the seals like Jessie_atvruns suggested. Collar might still be usable.

 

I may do that to have it this weekend, the left bearing is still good to read #s from and the seal to. Thanks for the great info and diagram !!!