Aluminum drive axle hubs?

Never had a problem with them myself. My trucks run 37,400 to 39,600 on the drives depending where they are, and they’re out in the bush or on industrial roads at those weights on the regular.

 

They would not be rated at 40k if they would not be suited for that.

 

All you see down here is aluminum hubs with all applications. Been like that for 50 years since the SQ100 days. Unless you got spokes.

 

How much weight does it save?

 

Probably 30 pounds roughly, per hub

 

It should be no more than fat, greasy driver vs skinny, slim

 

To cut the weight you can always run on half worn tires, half a tank of fuel, take everything out of the cab but driver's sit, put on lighter mud flaps, quarter container of windshield washer fluid, something else to cut?...

PS: I wouldn't worry about them being aluminum, as long as they are rated at the weight you are interested in. Main thing is to have good lubricant and break chambers, so bearings would not get hot and break shoe would not lock.