I pulled a PM on a used trailer I up picked recently. The first hub was pulled and the bearings removed. The outer looked pretty good, but the inner was a bit of a surprize.
It looks like a PO had driven the inner bearing with a punch to get the bearing seal out and damaged the roller cage. The scary part is that they simply re-installed it.
The cage was deformed enough that it came in to contact with the race as evident by the shiny spot.
Picking up a new set and grease seals today.
Don't overlook your wheel bearings.
Regards,
Kevin
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