How to Determine the Size of a Trailer Hub Assembly for Replacement

Question

Question:

The axle nut appears to be 1 inch how do I know what size hub to buy ? its 5 lug and has 13 inch tires on it ?

asked by: John C

0

Expert Reply:

To determine the size of the hub assembly you need to purchase you have to determine which bearings are in the old assembly. If the old assembly has L44649 inner bearings, you would use the hub you chose # 8-258-5UC1. If the inner bearings are marked L44643, you will need # 8-258BTUC1. If you do not have the old bearings, you need to measure the inner bearing surface on the spindle to determine if the 1.063 inch dimension or 1.00 inch dimension will be needed to accept the bearing. You can also measure the inner seal mounting surface and those dimensions would be 1.5 inches and 1.249 inches respectively. I have provided links for these two products and this will help with dimensions and pictures. Remember to make sure the bolt pattern is the same. You can use the measurement guide for this at the bottom of either hub assembly page.

Here are the specific measurements for each hub.

Hub 8-258-5UC1
bearing # L44649
Inner bearing dimension is 1.063 inches
Inner seal dimension is 1.500 inches

Hub 8-258BTUC1
bearing #L44643
Inner bearing dimension is 1.00 inches
Inner seal dimension is 1.249 inches

expert reply by: Robert G

0

Joe F.

5/16/2020

I need to purchase two replacement hubs (hopefully pregreased) for a 1989 Coleman Shenandoah pop up camper (5 bolt wheel). Unfortunately, the camper is located in the mountains of Colorado over a 100 miles away from my residence and I cannot easily measure the size of the axle. Do you sell hubs what would fit the 1989 Coleman Shenandoah camper? If so, could you direct me to the specific parts. Thank you.

Chris R.

5/19/2020

I really wish we had access to part numbers used for trailers like this, but unfortunately lists/charts just aren't available. The only way to verify a good replacement will be to measure the spindle or look at the bearing numbers used in the existing hubs. I know this isn't the answer you were hoping for - I wish I could have given you a better one....

Answer 1

Hubs will heat up when driving, but if it feels like they are getting too hot, then you will want to look at a few things on your hub. My guess is that the spindle nut is too tight and the added stress on the bearings is overheating the bearings and…

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Answer 2

Hey Stephen! I see you already ordered replacement parts from our site. I double checked with Dexter, and the Dexter Trailer Hub and Drum Assembly #8-201-5UC3-EZ fits as long as you have a 6 on 5-1/2 bolt pattern. However, you will want to swap out…

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Answer 3

The Dexter Trailer Hub part #8-201-9UC3-EZ works with 12" electric brake assemblies. I recommend the etrailer.com 12" Self-Adjusting Electric Brake Kit part #AKEBRK-7-SA to go with the Dexter hubs because the etrailer brakes are cut so the…

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Answer 4

I reached out to my contact at Dexter Axle who said that based off of the numbers you sent in it sounds like you have a #11 Torsion axle rated for 5,200 lbs that is on a Haulmark Trailer manufactured back in 2001 (at least the axle was). Your axle…

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Answer 5

The MTI number on your 8-201 hubs is simply a casting number. It does not indicate any information about the hubs or have anything to do with the actual part number. I'm not surprised to hear you have different outer bearings between the two…

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Answer 6

We have just what you need the part #8-201-5UC3 is a 5,200 lb capacity Dexter hub that will fit your Dexter hub. This hub has a 6 on 5-1/2 inch bolt pattern. For the matching right side brake assembly you would need the part #AKEBRK-7R-SA.

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Answer 7

A BT8 spindle would have a diameter of .99 of an inch where the bearings would both install and would have a diameter of 1.24 where the great seal would ride. That would require a hub part #AKIHUB-440-2-1K for an idler hub. A BTR spindle would have…

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Answer 8

The short answer to both of your questions is yes. You can remove the backing plate or brake assembly and use the existing hub with integrated drum by itself, or, you can simply replace it with an idler hub. Based on the photos, I would suggest…

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Answer 9

Trailer wheel bearings are specific to the spindle that is installed on the axle that is on your trailer. You will need to safely support the trailer, remove the wheel and tire, remove the grease cap, remove the cotter pin and washer that secures the…

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Answer 10

The right and left orientation is determined if you are standing behind the trailer looking towards the tow vehicle. The left side is the drivers side and the right side is the passengers side. Tthe shorter brake pad will always be in the front of…

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Answer 11

To install a brake controller on your 2010 Ford F-150 w/ factory tow package and 4-way connector, you will need to install Adapter 4 Pole to 7 Pole, part #37185. You will need to run 2 wires, to the front of the truck, the Black wire for 12 volt…

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Answer 12

The connector for installing your brake controller is located under the dash. Directly under the steering column, you will see the diagnostic port. The port for the controller is located above and behind, as you can see in the photo I've…

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