How to Determine Replacement Trailer Wheel Bearing Sizes

Question

Question:

Are all trailer wheel bearings the same size? Like the one you sell, fits all

asked by: Dave B

0

Expert Reply:

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 spindle nut, remove the spindle nut, and then you will be able to remove the hub from your trailer.

Once the hub is removed you will be able to get the part numbers from the inner and outer bearings to determine the correct replacement parts for your spindles.

I have attached a photo of the parts showing where the part numbers are located and the areas that you will need to measure if your parts do not have part numbers etched on them.

expert reply by: Robert G

0

click to enlarge

Cliff

3/15/2024

If I have the serial number for my trailer is there an easy way to look up this info without having to disassemble first?

Reply

Mike L.

3/15/2024

@Cliff Unfortunately not. Unlike a passenger vehicle, it usually isn't possible to look up component parts of a trailer based on its model. In order to swap out the bearings, you'll have to pull one of the hubs anyway, so might as well go ahead and do that so you can get the correct reference numbers off the inner and outer wheel bearings. You can provide me with some information that would provide some clues that would allow me to make an educated guess, such as the wheel bolt pattern and axle tube diameter but honestly taking a few minutes to pull one of the hubs to get those numbers is the best bet to ensure you get the parts you need the first time.

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Cliff

3/15/2024

@MikeL Thanks for the reply. I have reached out to the original dealer. It's just hard to disassemble and wait for parts because I don't keep my boat at home. The trailer is just a 2020 EZ trailer custom

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Roger B.

7/12/2020

I have a 1958 boat trailer. Bearing size

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Chris R.

7/12/2020

Unfortunately there's no way for me to know what bearing size the hub on your 1958 boat trailer uses. You will need to pull one of the existing hubs and check for a number stamped inside the bearings themselves or measure along the spindle where they sit to get their inner diameters.

Reply

Cole K.

8/19/2022

@ChrisR You are so patient.

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Frys

7/7/2020

Need seals and I think there double seals on a loadrite boat trailer. L68149 UCF-6 inner bearing, L44649 outside bearing. Could not locate numbers on seals. Also need break shoes and hardware for loadrite trailer 10 inch brake drums. Can you advise on the correct parts? Thanks look forward to hearing from you.

Reply

Chris R.

7/12/2020

With that inner and outer bearing, there's a really good chance you have a 10-19 seal. For a double lip seal the part # RG06-050 will work perfectly. If you have a 3,500 pound axle with electric brakes the etrailer Replacement Shoe # AKBRKR-S-10 should work well.

Reply

Craig J.

5/19/2020

Hello I have a 91 yacht club boat trailer, it hauls a 17' searay fishing boat. I'm looking for bearings and seals for it, can u help me?

Reply

Chris R.

5/21/2020

In order to determine the right replacements you'll need to pull one of your existing hubs and check for the bearings that are used. There should be a number stamped right inside both the inner and outer bearings - if you can tell me these numbers I would be happy to recommend the right parts.

Reply

Johnny K.

4/26/2020

Have a trailer with inner bearing #68149 and outer bearing of #67048 probably old mobile home axles ,I bought some hubs from yall AKHD-655-6-K outer bearing was the same but inner bearing was way to large . Need to see if you have anything compatible so I can send hubs back for exchange

Reply

Chris R.

4/27/2020

We don't have any hub assemblies available that use that inner and outer bearing combination. The trouble with mobile home axles is that they're really only designed to be used once - so they often require unique hub assemblies and replacement parts are really hard to come by. I know it's probably not what you're hoping to hear, but your best option is likely a whole new axle that features a standard spindle. If you can tell me the hub length on your current unit along with its capacity, I would be happy to make a specific recommendation.

Helpful Links

dept-pg-trailer_axles.aspx

Reply

Paul R.

4/19/2013

I bought a trailer that was home made and needed to replace the inner and outer bearings and seal this answer and Photo works really good made it a lot easier to get the right replacement parts that I needed THANK YOU !!!!!!

Reply

Patrick B.

4/25/2013

We are glad to hear our site information is helpful. Let us know if you have any questions.

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Ashley

9/16/2020

This is the most helpful information I’ve come across! Thank you! Changing my first ever bearings on our old ‘75 livestock trailer.

Reply

Jon G.

9/16/2020

@Ashley Thank you for the kind words! Glad we could help out!

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Answer 1

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…

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Answer 2

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 3

The Dexter Trailer Idler Axle w/ Hubs - EZ-Lube - 5 on 4-1/2 Bolt Pattern - 60" Long - 2,200 lbs #20545I-EZ-60-15 is a great starting point to upgrade your trailer. This will give you a standard size axle with good bearings, hubs, and EZ-lube…

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Answer 4

The spindle dimensions are as follows: A is the mounting dimension, B is the seal dimension, C is the inner bearing surface, D is the outer bearing surface and E is the diameter of the threaded portion of the spindle for spindle nut selection. Say…

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Answer 5

Based on the GVWR of your 2019 Jayco North Point 315RLTS it does seem like you have 7k axles. I recommend verifying this information to be sure. These axles typically use the #14125A outer and #25580 inner bearing found in the Timken #TMK92VR.…

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Answer 6

The difference between an load range C and load range D tire in the same size is the capacity and psi rating. The two tires will still have the same dimensions and fit on the same wheel. The D rated tire has a higher capacity. For a ST175/80D13 like…

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Answer 7

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 8

You will need to measure the diameter of the spindles where the seal and bearings ride. Check out the picture I attached that shows where this is. You will need an exact measurement so either a digital or dial caliper will be needed. To pick out the…

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Answer 9

You'll want something pretty bright based on what you want it for so for maximum brightness out of an interior trailer light I would go with the part #ILL08COB. The raw lumen output rating is 1400 lumen. The effective lumen output rating is 990…

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Answer 10

There is only a single difference between the two 3,500 lb Kodiak disc brake hub and rotor kits you asked about, and that's the protection given to the calipers. - KodaGuard-Coated Cast Iron Calipers: Kodiak Disc Brakes #KOD59FR - Dacromet-Plated…

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Answer 11

There is a replacement that I recommend for the Tie Down 70E disc brake actuator, though you will want to verify that your mounting bolt holes are 3 inches apart on center and your tongue is a 3 inch channel. If they are I recommend the Dexter DX7.5…

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Answer 12

The easiest way to determine the correct bearings for your trailer is to use the industry standard numbers stamped into the lip of the bearings. This would require removal of the hub. Your measurement, 1-1/16 inches, comes to 1.0625 inches and the…

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How to Determine Replacement Trailer Wheel Bearing Sizes

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