‘Tightening’ the bearing in place with metal compound is the answer if you
are worried about spindle wear on your trailer axle
by KEITH BERGLIND
Trailer axles seem to have a problem with spindle wear that is not normally seen in cars and trucks. The problem is that the inner race of the inner wheel bearing turns on the spindle and slowly wears back and into the face of the spindle.
I first noticed this while servicing RV trailers, including big fifth wheels. One big trailer I had was wearing so quickly that I would check and sometimes adjust the increasing clearance half way through our trip back to Canada from California.