Unitbearings, Temperatur?

[Ozymandias]

Hi
Yesterday i did a longer trip on the freeway and after return home I recognized that my front axle wheelbearings are warm - measured 130°F (56°C) with infrared meter - equal on both side.
Bearings are not completely new, run since around 4000M.
Do I need to be worried?
-Ozy

 

[AH64ID]

What was the ambient temp?

 

[Ozymandias]

Around 50°F, Freeway means between 70 and 75MpH.

-Ozy

 

[RVTRKN]

Did you consider replacing them 4000 miles ago with Dyna-trac or equivalent? I sure would have, and when it's time for mine to be replaced that's what getting installed.

 

[Ozymandias]

Yeah it thought about Dyna/Spyntec but so far they are to expensive, bought nice SKF Bearings from Rockauto and installed accordingly to the Manual.
I just never noticed before that the bearings gets warm, at the moment I'm on the road without the Hub Caps, that's why I touched them after the ride.

I would be happy if someone else could touch his Hubs and give me second opinion on this.

Edit says; all Dyna/Spyntec Dealers wants over 1000.-$ for Shipping, that far to high, I paid 300$ FedEx shipping for the BD-Converter and that's a far heavier part.

 

[jhenderson]

Bearings are fine.

 

[rscurtis]

I paid 300$ FedEx shipping for the BD-Converter and that's a far heavier part.

Not quite. There's enough steel in a Dynatrac kit to make 3-4 torque converters.

 

[Ozymandias]

I paid 300$ FedEx shipping for the BD-Converter and that's a far heavier part.

Not quite. There's enough steel in a Dynatrac kit to make 3-4 torque converters.

Converter was close to 30Kg - if the hubs are 100Kg then they are far to heavy for me, my Truck is to heavy without this. ;-)

 

[AEdelheit]

You could also have heat from the brakes so it may not all be from the bearings, on trailers I like to be able to put my hand on the hubs and hold them after driving, front axle of a truck that does most the stopping power, I wont even try.

 

[MLam]

After driving 50km at 100kph, my driver and passenger's side bearing temperature were 34C and 36C respectively. The ambient temperature was 19C and the drive was at night.

 

[Ozymandias]

Thanks for all input, so mine are slightly warmer but not so much that I must be worried.

 

[RVTRKN]

Their preset and all you do is torque the set in place, if they fail what could you have done differently? Run them til failure or replace with another set? Sort of my delima, I want to replace my G56 with a NV5600, but it's still OK, so why go through the expense if it's OK but not perfect.

 

[AH64ID]

Funny, I want to swap my NV5600 for an AD G56... But not worth the time and money.

 

[RVTRKN]

I'll swap my G56AE for your NV5600.

 

[Prairie Dog]

Undoubtedly your bearings were a little bit warmer from using the brakes to stop. I really don't think there's anything wrong with them.
It would be more of a test to take the weight off each wheel and check for looseness and roughness.

 

[seafish]

Funny, I want to swap my NV5600 for an AD G56... But not worth the time and money.

I'll swap my G56AE for your NV5600.

I'll swap my G56 AD for somone's G56AE...sounds like we could we actually make this work..lol

 

[AH64ID]

I'll swap my G56 AD for somone's G56AE...sounds like we could we actually make this work..lol

There we go!

I think the AD ratios are great. Best of 4.10's in 1-4 and 6, but direct with 3.73's is better. IMHO... It's a great towing set of ratios, but not as good empty.

 

[seafish]

I have the AD with 3.73 gears AND 19.5" wheels...I still run too high rpm at highway speeds. If I was towing ALL the time I would stick with it, but since I tow intermittently, and mostly lighter loads, I think that stepping up to the G56 AE gear ratios would be better for my driving habits...ncie thing about the manual transmission is that you can always shift down a gear.

 

[Regcabguy]

Yeah,a 7th gear for highway cruising sure would be nice. I'm at 2000 rpm @ 65 mph w/34" tires and my constant load. The good thing though was that my dmf was like new @ 37K when it came out due to a seeping rear main.

 

[AH64ID]

I would love to have a double OD 7 speed with 3.73's. A 0.85:1 for towing, and 0.70 for cruising.