How To Tell What Size Bearing Buddy Is Needed for My Trailer Hubs

Question

Question:

I measured the existing caps on my trailer & they measure 2 1/2 accross the top, Im not sure what Bearing Buddies to buy ?

asked by: PAT

0

Expert Reply:

The portion you need to measure is not the cap, but the the hub bore. Remove the grease caps and measure the diameter of the opening the caps occupy. This is the hub bore. You will need an accurate measuring devices like a set of dial calipers that is accurate to 3 decimal places.

The Bearing Buddy pair you were looking at, part # BB1781, fits a 1.781 inch hub bore. The measurement you find should match exactly or very close to one of the measurements displayed on the Bearing Buddy page I have linked below.

expert reply by: Patrick B

0

Steven C.

3/20/2020

The hub bore on my boat trailer measures 1.92 Not sure where to go from here, can you help ?

Chris R.

3/20/2020

Unfortunately we don't have a Bearing Buddy Protector available that matches your 1.92" hub bore diameter exactly. Do you by chance know what outer bearing number the hub uses? There should be a number stamped inside the bearing itself.

Answer 1

Hey Eric, we have just what you are looking for with the bearing kit part #BK2-100 which comes with the bearings, races, washer, and seal. Another option that I think you might like is a pre-greased hub ready to slap on your spindle in case you have…

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Answer 2

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 3

Hey Keith, thanks for reaching out. Based on everything you described, no, it does not sound like a bearing or seal replacement is necessary right now. You’re doing all the right things. You’ve got Bearing Buddies and bras in place, you’re checking…

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Answer 4

Your F78-14 size tires are the same size as the current 205/75-14 tire size so that's what you'll want to replace them with. I recommend going with the Karrier ST205/75R14 Radial Trailer Tire - Load Range D, #AM10235 If you need to get this a…

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Answer 5

Thanks for getting me all the info needed to pick out a hub! Based on what you listed the correct hub you need for a replacement is the part #84545BX. This uses the same bearings as what you have and has a matching bolt pattern.

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Answer 6

You need to use the inner diameter of your hub bore to determine what size Bearing Buddy you need. If you measured the outside diameter and chose your Bearing Buddy on that, then it will not fit. If you measured the inner diameter, then as you said,…

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Answer 7

As long as the seal in the bearing kit part #BK1-150 is flush with the hub it is okay to have a small gap between the seal and inner bearing. When installing the seal you only insert it enough so that it is flush with the hub. The seal's job is…

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Answer 8

It would appear the the new seal SKR 17144 is a single lip seal and the Grease Seal #RG06-050 that you originally had is a double lip seal. That is the only difference that I can find on the seals. The double lip is better at keeping dirt and water…

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Answer 9

To determine which Bearing Buddy would fit your trailer you will need either a measurement of the hub on your trailer, or the bearing part numbers. To measure your existing hub it is recommended to use digital calipers to get a precise measurement.…

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Answer 10

Hello Jonathan, thanks for reaching out. If you want to stick with the 4.80-12 tires, we do have The Kenda #AM10062 that has a 65 mph speed rating. This would allow you to drive at highway speeds without any concerns. it may be possible to upgrade to…

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Answer 11

For a hub bore of 1.97 inches going with a Bearing Buddy part #BB1968SS would be the closest match. The .02 inch difference would only mean the Bearing Buddy would fit slightly easier.

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Answer 12

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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How To Tell What Size Bearing Buddy Is Needed for My Trailer Hubs

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