ranchhopper Posted November 14, 2014 Share Posted November 14, 2014 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.? Quote Link to comment https://www.bigmacktrucks.com/topic/37724-do-macks-have-a-standard-size-bearing-and-spindle-for-different-weight-front-axles/ Share on other sites More sharing options...
Superdog Posted November 14, 2014 Share Posted November 14, 2014 Give Mander's Diesel a call. I bet if they don't have what you need,they can find it. 800-469-1801. Quote Link to comment https://www.bigmacktrucks.com/topic/37724-do-macks-have-a-standard-size-bearing-and-spindle-for-different-weight-front-axles/#findComment-266665 Share on other sites More sharing options...
ranchhopper Posted November 14, 2014 Author Share Posted November 14, 2014 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. Quote Link to comment https://www.bigmacktrucks.com/topic/37724-do-macks-have-a-standard-size-bearing-and-spindle-for-different-weight-front-axles/#findComment-266666 Share on other sites More sharing options...
Vladislav Posted November 16, 2014 Share Posted November 16, 2014 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 ##. Quote Никогда не бывает слишком много грузовиков! leversole 11.2012 Link to comment https://www.bigmacktrucks.com/topic/37724-do-macks-have-a-standard-size-bearing-and-spindle-for-different-weight-front-axles/#findComment-266950 Share on other sites More sharing options...
ranchhopper Posted November 16, 2014 Author Share Posted November 16, 2014 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. Quote Link to comment https://www.bigmacktrucks.com/topic/37724-do-macks-have-a-standard-size-bearing-and-spindle-for-different-weight-front-axles/#findComment-266951 Share on other sites More sharing options...
j hancock Posted November 16, 2014 Share Posted November 16, 2014 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 Quote JimIt doesn't cost anything to pay attention. Link to comment https://www.bigmacktrucks.com/topic/37724-do-macks-have-a-standard-size-bearing-and-spindle-for-different-weight-front-axles/#findComment-266961 Share on other sites More sharing options...
ranchhopper Posted November 16, 2014 Author Share Posted November 16, 2014 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. Quote Link to comment https://www.bigmacktrucks.com/topic/37724-do-macks-have-a-standard-size-bearing-and-spindle-for-different-weight-front-axles/#findComment-266963 Share on other sites More sharing options...
keg1 Posted November 16, 2014 Share Posted November 16, 2014 I just priced hubs for my r and I got a hub number of hf725k. It's a 12000# though. Quote Link to comment https://www.bigmacktrucks.com/topic/37724-do-macks-have-a-standard-size-bearing-and-spindle-for-different-weight-front-axles/#findComment-266983 Share on other sites More sharing options...
ranchhopper Posted November 17, 2014 Author Share Posted November 17, 2014 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. Quote Link to comment https://www.bigmacktrucks.com/topic/37724-do-macks-have-a-standard-size-bearing-and-spindle-for-different-weight-front-axles/#findComment-267013 Share on other sites More sharing options...
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