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Availability of Replacement for Hubs With 5 on 5-1/4" Bolt Pattern  

Updated 02/05/2025 | Published 12/11/2024

Question:

My trailer hubs measure out at 5 x 5.25” am I measuring it wrong or do you not offer this seize in replacement hubs?

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Expert Reply:

Hi Hayden; that bolt pattern is really uncommon but I believe it can be found on some really old Airstream trailers. There are no modern replacements that will match. The best option is to replace the hub with one that has a common bolt pattern like the 5 on 4-1/2 found on the # AKIHUB-555-35-K you looked at.

If you want to double check your measurement I went ahead and attached a help article below which explains how to measure. If you find that you have a different bolt pattern, and the hub listed above won't fit, I would be happy to help you find a replacement if you can also let me know the axle capacity/bearing combination you need along with the bolt pattern.

expert reply by:
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Robin H
Hayden W. profile picture

Hayden W.

12/17/2024

Yoou were correct Robin, I wasn't measuring correctly. I do have 5x5.5"" hubs. The part you attached appears to work. How can I confirm this will fit on my axle? It was a homemade trailer, I have no information other than that. Or are hubs a universal fit to all axles?

Robin H. profile picture
Etrailer Expert

Robin H.

12/18/2024

@HaydenW they are not universal so you need to identify the bearings. They may have part numbers stamped in the side. If they don't, you will need to measure the inner diameter of the bearings with a digital caliper like # PTW80157. If you can get me that information I'll see if a compatible hub is available.
Hayden profile picture

Hayden

12/26/2024

@RobinH my digital caliper is broken. However I measured the hub itself with a mechanical one at 45mm or just under 1.8”. That would be where the inner bearing goes. The outer bearing is 32mm or just under 1.3”. I’ve got a new one on order. Let me know if that correlates to anything.
Robin H. profile picture
Etrailer Expert

Robin H.

12/27/2024

@Hayden it sounds like you don't have a common bearing combination since nothing really matches. It would be best to get a more precise measurement once the one you ordered shows up.
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