Identifying Replacement Bearings, Races and Seals for Trailer Spindle on 3500-lb Axle

Question

Question:

I have a trailer with 3500 lb axles and need to replace the inner and outer bearings and races w/ seal, nut, and carter pin. Using a caliper the outside spindle measures 1.063 to 1.064, the inside 1.373 to 1.379 inches. These are spindle ODs The seal measures 2.567 OD, 1763 ID. They are used on a Dexter 10inch drum with the number 8-249 stamped on the outside. I dont know the spindle #. What bearing kit do I need? The cap measures 2inch OD

asked by: Wm D

1

Helpful Expert Reply:

The most sure method of identifying replacement bearings and seals is to find the original items' part numbers. The appearance of these reference numbers is shown in the linked photo, along with the points on the spindle to measure (as you did) to find the dimensions that will be needed if the part numbers cannot be confirmed.

If you can find the part numbers you can search for those directly using our search box. If you cannot and need to find bearings by measurement you can use the linked page which shows all bearings for 3500-lb axles. In the margin are filters you can use to find bearings with the same dimensions as yours.

Bearing # L44649 has an inner diameter of 1.063-inches and works with race # L44610. Bearing # L68149 has an inner diameter of 1.378-inches and works with race # L68111. Based on your information it looks like the kit you referenced, part # BK2-100, is indeed correct. This kit includes a grease seal with the appropriate 2.565 outer diameter you need.

expert reply by: Adam R

1

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Answer 1

It is not required to know the axle capacity when selecting the correct replacement barking assemblies for a trailer axle though it does help. If you want to try and determine this you can look for a sticker on the center of the beam or measure the…

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Answer 2

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 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

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 5

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 6

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 7

Depending on how the trailer was made, there will be a few spots you can check to identify the axle. First, if the trailer was pre-made by a specific company, you may be able to find this information in either the paperwork or on a placard somewhere…

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Answer 8

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 9

You can verify that the 10-19 grease seal included in Bearing Kit #BK2-100 is the correct one for your spindles by taking two measurements. First you want to measure the rear hub bore where the seal is inserted. The seal's outer diameter needs to…

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Answer 10

The recommended lug nut torque for your 7,000lb axle depends on a few factors like wheel size, stud size etc. Check out the attached photo which shows the torque specs for a variety of applications. I see you were looking at the Dexter Nev-R-Adjust…

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Answer 11

The UFP H-1377 correlates to a Dexter #84 spindle, which is for a 3,500 pound axle. This will utilize an inner bearing #L68149 and an outer bearing #L44649. As this is being used on a boat trailer, I highly suggest going with the etrailer.com…

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Answer 12

On Dexter 12" Nev-R-Adjust Electric Brake Assembly #23-458 the shoe pad thickness is 3/16 of an inch. Dexter says that you should replace the shoes if the material gets down to 1/16 of an inch thick or less.

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Identifying Replacement Bearings, Races and Seals for Trailer Spindle on 3500-lb Axle

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