Do macks have a standard size bearing and spindle for different weight front axles?

[ranchhopper]

I have a dilemma I wanted to convert my front Dayton hubs to hub piloted front wheels I called gunite and told them my hub number and they came back with a HF819K hub for the conversion. I shopped around and got a great deal on the hubs they arrived and are the same size length wise but the bearings and races are considerably larger and wider. The new hubs take a 555S outer and a 6461A inner bearing which is for a considerably larger spindle where the old daytons took a bower 3877 outer and a bower 3982 inner bearing. My truck has a 10500 pound front axle which has a smaller spindle and bearing combination is there a place to find out which mack axle spindle uses these larger bearing combination where I could get a used axle beam instead of returning all these parts I cant believe gunite was so far off on their conversion. When I gave them the hub number cast into one of the spokes they even said it was their number they made the hub for mack and the HF819K hub was a direct replacement any suggestions here is a picture of the size difference between the outer bearings the smaller being the one off my truck.?

[Superdog]

Give Mander's Diesel a call. I bet if they don't have what you need,they can find it. 800-469-1801.

[ranchhopper]

I will give it a try thanks if all else fails the truck salvage yard in des moines has several take out axle beams for sale.

[Vladislav]

If you go to swap an axle beam with knuckles you'll need king pins revized.

Sorry I have no direct answer for your question and also would like to know them bearing ##.

[ranchhopper]

I have given up with dead ends and people who say they will call back and it never happens Im going to buy a whole front axle with piloted hubs next week an hour and half drive from here and I will be done with it.

[j hancock]

Don't know why parts guys can't help you out. Gee....their job is to sell parts???

Open up this page and scroll down and there is a conversion link. I didn't try it to see if it works correctly because I don't know all the specs of your truck.

http://www.accuridewheelendsolutions.com/products/gunite-wheel-ends-product-search/

Good luck with your swap and pictures please

[ranchhopper]

The gunite people were the ones that gave me the incorrect hub number to begin with that is what that link is for mine didn't cross so I called the headquarters 50 miles west of me. I cant get a straight answer when I tell the parts guys the size of the bore of the bearings as to which axle they will fit that go into the hubs I have some parts guys that are great some that don't want to be bothered maybe its a time issue where they have better things to do. Fact is I now have two new hubs that wont work plus the studs that go into them about 650 dollars worth of parts which I stand to loose over a hundred dollars on with return shipping and restocking fees so the axle swap is more economical I should have done it that way to begin with and I would have been money ahead.

[keg1]

I just priced hubs for my r and I got a hub number of hf725k. It's a 12000# though.

[ranchhopper]

The biggest drawback was the light 10500 pound axle on the front of my truck I believe these parts will fit on a #12000 or larger axle.