Determining Correct Replacement Bearings and Seals for 6,000 Pound Axles

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Question:

I have a 18’ corn pro trailer with 6000# dexter axles. I need bearings and seals for it and the only number that I can read on the the old bearings is one 25580

asked by: John B

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Expert Reply:

Since the current hubs on your trailer use the # 25580 inner bearing, there are a few possible options for the exact outer bearing replacement. Most likely, the outer bearing you need will be # 14125A, # 15123, or # LM67048. These all feature the same 1.250 inch inner diameter, meaning they will all fit the spindle on your trailer. However, they each will have a slightly different outer diameter, which is what needs to match up with your current hubs.

Since you cannot read the number stamped onto the bearing, you will just need to measure both the inner and outer diameter of the outer bearing to ensure you choose the correct replacement. I recommend using a digital caliper like # PTW80157, as the measurements need to be exact. Since there are a few possibilities, you will want to measure the inner and outer diameter on the existing grease seal as well.

If you are able to give me these dimensions, I will be happy to recommend the correct replacement bearings and seal for your trailer. I have attached a couple articles on trailer bearings that you might also find helpful.

expert reply by: Chris R

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Answer 1

I can tell you how to determine the correct replacement hub, but we would not have any way of identifying a replacement hub from a photo. So, there are a number of things you'll need to know; first, you need to know the weight rating of your…

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Answer 2

Replacement hubs are selected based on the bearing set used in the originals. The linked picture shows you the typical location and appearance of bearing, race and seal part numbers, but if you cannot find those you can measure the spindles with a…

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Answer 3

You can certainly replace a Dexter hub/drum with a non-braking idler type hub. You'll need to match up the set of bearings. The idler hub needs to use the same inner and outer bearing parts in order to fit on your spindles. The linked photo shows…

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Answer 4

So I have your hub narrowed down to a few different possibilities but we need to know what your bolt pattern is to know for sure. We have the part #84556UC3 for if your bolt pattern is 5 on 5 inch. We have the part #845476UC3 for if your bolt pattern…

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Answer 5

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 6

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

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Answer 7

Even though I cannot comment specifically on the grease you used because I am not familiar with it, I can tell you the best grease for trailer bearings is a a grease with a rating of GC-LB, which just means it is made to withstand very high…

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Answer 8

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…

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Answer 9

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 10

To determine the size of the brake assemblies you need you have to measure the depth and width of the hub drum on the axle like what you see in the picture I attached. The most common size is 2-1/4 inch wide like the #T4071600-500 that you…

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Answer 11

To find the load capacity for your axle you should look on the trailer VIN plate or sticker that lists the VIN number. The weight rating of the axle should be listed on that same plate or sticker. Also, the axle could have a tag or plate on it that…

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Answer 12

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

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Determining Correct Replacement Bearings and Seals for 6,000 Pound Axles

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