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How to Pick Out a Trailer Hub for a Utility Trailer

Question:

I am in need of a hub for a 4X8 utility trailer. outer bearing is a SKF LM12749 inner bearing is a Tyson JL69349 Wheels are a mid 80 1/2Ton Chevy rally wheel, 5 on 5. Cannot see any markings on the seal, the best I can tell the inner measurement is 2inch and the outer is 2-1/2 The hub has a casting mark on the front - 3J18. Any help will be appreciated, either if yall have one or can direct me where I can locate one. Thanks,

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Expert Reply:

The bearing numbers you listed aren't the standard trailer bearings we normally see, but there is still hope that we may have a hub that would work.

In order to pick out the correct hub assembly for a trailer you are going to need know a few key pieces of information. The first thing you will need to know is the bolt pattern of your hubs. This is so you get a hub that is compatible with your wheels. I attached an FAQ article on determining bolt pattern for you to check out.

Next thing you will need to know is what spindle you have on your trailer. In order to do that you can either get the inner and outer bearing numbers from a hub or use a dial or digital caliper to get exact measurements of the spindle. Since your bearing numbers aren't standard the measurements needed are the parts of the spindle where the bearings ride.

If you get back to me with that information I will help you pick out the right hub assemblies. Or, you can follow the link I attached that will take you to the page that has all of our replacement hubs.

You would want to first select the bolt pattern that you have, next select the inner bearing you have, followed by selecting your outer bearing, and then all the correct hubs will be listed.

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expert reply by:
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Jameson C

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