For you guys who use infared (i am sure i am spelling it wrong) thermometers to check your hubs what temps are you looking for and is it normal to get different temps on different hubs on the same trailer.For example say you have been driving for 3 hours what would be a normal temp and should they all be the same.

I think you should determine normal yourself. Make up a chart for each hub noting the outside temperature, and whether in the sunny side or the shady side of the drive. I also use mine to monitor tire temps. I had a hub go on the front of the truck and wow, did it ever get hot.

I've seen my hubs reach 135*F and only 92*F. Summer time/winter time/sunny side-shaded side.I'm more concerned that I don't find one reading much higher than the other axle on same side of trailer.Not unusual for differences in temps side to side.....depends on which side is 'sunny'IF 10% difference in hubs on same side......time to be checking the bearings/brakes especially on the higher of the two.Same for tire thread, drums, rotors etc.

And the sunny side always read a slight higher degree. Otherwise I always looked for a different in temperatures as mentioned above.

I checked mine last week on the way up to Orlando on the 5th wheel. All 4 trailer wheel hubs were in the 120°F range, plus or minus 3°F. My front truck hubs, after pulling into the rest area on the turnpike, were both in the 145°F range, probably from using the brakes on the truck to get off the 4 lane. Outside air temp was in the mid 80s and I was running about 62 mph for about an hour the first time I checked them. Then checked them again after about another hour and they were holding the same temperature as the first check.

what temp should hub be with infared thermometer

13 Replies

Old-Biscuit
Explorer III
May 02, 2013
I've seen my hubs reach 135*F and only 92*F. Summer time/winter time/sunny side-shaded side.

I'm more concerned that I don't find one reading much higher than the other axle on same side of trailer.

Not unusual for differences in temps side to side.....depends on which side is 'sunny'

IF 10% difference in hubs on same side......time to be checking the bearings/brakes especially on the higher of the two.

Same for tire thread, drums, rotors etc.
Artum_Snowbird
Explorer
May 02, 2013
I think you should determine normal yourself. Make up a chart for each hub noting the outside temperature, and whether in the sunny side or the shady side of the drive.

I also use mine to monitor tire temps.

I had a hub go on the front of the truck and wow, did it ever get hot.
2oldman
Explorer II
May 02, 2013
Infrared :)

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what temp should hub be with infared thermometer

13 Replies

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