How to Pick Out Replacement Trailer Hub

Question

Question:

I have a trailer with a 1inch axel and a 1.25inch step-up. I need a hub assembly for it, and prefer once with a grease zerk fitting at end. Does your part number 8-258-50UC1-EZ work on an axel with the specs I described? All I know other than this information is that the the current bolt pattern is 5 lug and its a boat trailer.

asked by: Ryan M

0

Expert Reply:

In order to pick out the correct hub assembly for a trailer you are going to need know a few key pieces of information. The first thing you will need to know is the bolt pattern of your hubs. This is so you get a hub that is compatible with your wheels. I attached an FAQ article on determining bolt pattern for you to check out.

Next thing you will need to know is what spindle you have on your trailer. In order to do that you can either get the inner and outer bearing numbers from a hub or use a dial or digital caliper to get exact measurements of the spindle. The measurements needed are the parts of the spindle where the bearings ride.

Based on the dimensions you listed the part # 8-258-50UC1-EZ would not be the correct hub for you.

If you get back to me with that information I will help you pick out the right hub assemblies. Or, you can follow the link I attached that will take you to the page that has all of our replacement hubs.

You would want to first select the bolt pattern that you have, next select the inner bearing you have, followed by selecting your outer bearing, and then all the correct hubs will be listed.

expert reply by: Jameson C

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click to enlarge

Steve V.

9/19/2024

I have a bolt pattern of 5 on 4 1/2". 10" wheels. The inner and outer bearings are L44649. I have a friend who had an extra wheel hub with my dimensions except the inner and outer bearings are L44643. Would this hub work as a replacement? thank you steve

Jameson C.

9/19/2024

@SteveV It would not work. The bearing your spindle requires is a little larger at 1.063 inch vs. what your friend has is 1.00 inch.

Answer 1

When it comes to purchasing The Trailer Hub Assembly - 2,200-lb E-Z Lube Axle - 5 on 4-1/2 - 13 inch - 15 inch Wheels - Galvanized #8-258-50UC1-EZ, the bearings, races, and grease seals are included but they do not come packed. Grease will need to be…

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Answer 2

Thanks so much for providing those details! Based on your bearing numbers, you definitely have a 3.5k axle with a 5 on 4-1/2 lug pattern. For replacement hubs, I recommend the Easy Grease Trailer Hub/Drum Assembly for 3.5K Axles - 10" Diameter -…

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Answer 3

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 4

To determine which hubs would be best for your boat trailer there are a few things you will need to look at; the axle capacity on your boat trailer, the inner bearing number, outer bearing number, grease seal number, the bolt pattern of your wheels,…

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Answer 5

The #8-258-50UC1-EZ Idler Hub Assembly you referenced includes the grease cap for an EZ Lube spindle. An EZ Lube spindle has a zerk fitting in the end of it so grease can quickly and easily be added to the hub. The rubber plug in the center of the…

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Answer 6

Overpacking the trailer hub with grease is the number one reason for grease seal failure. For a boat trailer I would recommend re-packing the hubs by hand with grease once per season and you'd be fine. I don't like recommending people use…

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Answer 7

The #84 spindle is just a common way to identify the spindle dimensions typically used for 3,500 lb axles. So instead of listing out the parts, people can just say they have #84 spindles and it's easier to know what fits it. The CE Smith Trailer…

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Answer 8

In order to find the correct hubs/drums for a trailer you'll need to know either the axle capacity, bearings numbers, or spindle dimensions. We can't look any of this up for any one particular trailer as there is simply no database of this…

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Answer 9

The BTR and BT8 denotations refer to the spindle, not the trailer hub. The difference between a BTR and BT8 spindle is that the BTR spindle uses a 1.063" diameter L44649 bearing and the BT8 spindle uses a 0.99" diameter L44643 bearing. In…

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Answer 10

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 11

I wish we could help but none of our hubs fit a spindle that is 1-1/4 inch in diameter all the way across. If instead the spindle was 1-1/16 inch diameter for both bearings you'd want the part #8-258-50UC1-EZ which is standard for a 2,200 lb…

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Answer 12

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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How to Pick Out Replacement Trailer Hub

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