Technical Anyone know what a healthy trailer axle hub temp should be?

Been pulling a trailer all over the US for over 50 years. I am anal about maintenance and tires. I always did the hubs and brakes before every season began and replaced the tires every 2 years. Always ran 12 ply tires and kept the air pressure at 75 lbs. I used the touch method at every gas stop to check the hubs. In all this time I only had one tire problem. Keeping my fingers crossed.

 

That would be RainbowBoarding ! I may be in LA but managed to stick to the natural born gals ! Can I have a Beauty please ?! Yes I may !

 

Welp, the trailer made it 2700 miles and I did notice that the right rear hub was consistently 10* warmer. Never hot, but consistent nonetheless.