RE: Enya .60XF trouble when running hot ?
The outer race of the bearing should be a light heat shrink fit in the crankcase and definitely shouldn't rotate. It also appears to have a rubber seal which would indicate it's probably a sealed bearing that someone's fitted. Unfortunately that really means you need a new front housing which is most likely still available from Enya.
The front end of yours is slightly different to my 60X-III which doesn't have the raised part around the front bearing so I'd guess yours is either an X-I or X-II so I'm curious as to whether yours is ringed or AAC.