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

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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 !!!!!!

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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.

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Jon G.

9/16/2020

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

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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

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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

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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?

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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.

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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.

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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.

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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.

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Cole K.

8/19/2022

@ChrisR You are so patient.

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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?

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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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Kurt M.

6/20/2024

I need to replace the bearings on my boat trailer. Do I need any special tools to remove the bearings and replace them? Thank you

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Jon G.

6/20/2024

@KurtM You can remove and replace the bearings and seals on your trailer using standard tools around your house (like a hammer and a piece of wood), but we do have some parts that will make the job easier: - Seal Puller # PTW1219 - Installation Set for Bearings, Races, and Seals # PTW83020 - Powerbuilt Deluxe Bearing Packer # ALL647646 Please note that I've helped replace bearings and seals before without any of these tools so they aren't a necessity - just a convenience.

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Answer 1

Hey Vince, thanks for all of the info on your spindle. Based on that what you have it is actually a spindle for a 3,500 lb axle so you'd need a larger hub and drum like the part #84546UC3-EZ which is a 10 inch diameter hub/drum. Then for brake…

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Answer 2

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 3

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 4

Hi Tony; the #BK2-100 and #TMK52VR come with the same size bearings and grease seal. The main difference is the Timken name. This is usually associated with a higher quality bearings that are made in the USA which also accounts for the higher cost.

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Answer 5

I attached a link on this page that covers everything on adding brakes to a trailer like yours for you to check out. The first thing you'll need to know though is the axle capacity of your trailer and then the wheel bolt pattern of the trailer…

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Answer 6

The correct wet bolt/ shackle upgrade kit for your MORryde CRE/3000 axle will depend on the length of your current shackle links, measured center hole to center hole. For 2-1/4 inch shackle links, use #MR46ZR or for 3-1/8 inch shackle links, use…

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Answer 7

Though we do not have a printable 5 lug bolt pattern sheet I can teach you how to properly measure your rim! Since your rim has 5 bolts you will need to measure from the center of one hole to the farthest edge of either of the two farther holes.…

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Answer 8

The difference between the letters D and R on a trailer tire size is to show the different tire's construction. D stands for bias ply and R for radial. The main difference between a radial ply and a bias ply tire is how the tire is constructed.…

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Answer 9

In regards to the Dexter Electric Brake Kit part #23-450-451 which uses the Replacement Magnet Kit for Dexter 12-1/4" Electric Brake Assembly part #BP01-301, the magnet is held onto the arm with a retaining clip included with the magnet. If you…

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Answer 10

If you have a 7-Way on both your trailer and tow vehicle you will first want to make sure that you have a brake controller, like the Tekonsha Prodigy P3 #90195. A brake controller is what is used to send power from the tow vehicle and tells the…

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Answer 11

I reached out to CE Smith, who told me the Trailer Hub Assembly with Carrying Case for 2,500-lb Axles - 4 on 4 - Pre-Greased #CE13110 uses a marine grade grease similar to the LubriMatic Marine Trailer Wheel Bearing Grease #L54FR. At one point the…

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Answer 12

Hey Howard, in general people don't balance trailer wheels and tires as it doesn't seem to make enough of a difference for it to be worth it but the tire of the Westlake ST205/75R15 Radial Tire w 15" Eagle Aluminum Wheel #WST69FR that…

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How to Determine Replacement Trailer Wheel Bearing Sizes

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