Is There a 12 Inch Brake Drum for a Dexter #84 Spindle Available?

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Question:

Is their a 5 or 6 lug drum that will work on a #84 spindle, inner bearing L68149 with 12 inch electric brakes? This appears to be a Dexter moble home axle. This is on a triple axle boat trailer. Electric brake baker plate is welded to axle.

asked by: Larry P

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Expert Reply:

The #84 spindle from Dexter will limit the diameter of the brake drum to 10 inches, so this will not work with a 12 inch diameter brake, unfortunately. 12 inch brakes are generally fitted to 5,200 to 7,000 pound axles, which will typically have a much larger inner bearing. These will also use the 8 on 6 1/2 bolt pattern for the wheels.

The only way to keep a 5 or 6 lug drum on your current axles will be to cut off your current brakes and either weld or bolt on a 10 inch brake, like the Dexter Nev-R-Adjust Electric Trailer Brake Kit # 23-468-469. If the mounting bracket for the brakes are not salvageable, you may need to weld on the Brake Mounting Flange # 4-35 to complete the install. It should be noted that this is designed to fit a 2 3/8 inch diameter round axle. You will then need either the Dexter # 84546UC3-EZ for a 5 on 4 1/2 bolt pattern, or the Dexter # 84546UC3-EZ for a 6 on 5 1/2 bolt pattern.

If you prefer to stay with the higher capacity 12 inch brakes, I suggest replacing the axles. The Dexter # 8327834-EB will include electric brakes, drums, and all bearings, seals, and caps needed. However, this will measure 95 inches from hub face to hub face and 80 inches from the center of one spring seat to the center of the other one. The included drums will also use an 8 on 6 1/2 bolt pattern, so you would need to replace your current wheels with something like the Kenda Karrier ST235/85R16 Radial Trailer Tire with 16" White Wheel - 8 on 6-1/2 - Load Range E # AM32739.

expert reply by: Lazer S

0

Dexter Number 84 Spindle
(click to enlarge)

Answer 1

The 84 spindle takes a 3,500 lb hub like the #84545BX which uses bearings #L68149 and #L44649. This is a 10 inch drum. The 42 spindle takes a 5,200 lb hub like part #AKHD-655-6-EZ-K and uses bearings #25580 and typically #15123. This uses 12 inch…

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Answer 2

In order to verify the spindle dimensions so that you can pick out the correct hub/drum you have to get exact dimensions. For that you need to use a digital caliper like part #PTW80157. For how old your trailer is this is especially important as…

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Answer 3

As long as your current spindle has the following measurements then you can use a 6 on 5-1/2" hub and drum assembly with your current spindle: Seal diameter - 1.719 inches Inner Bearing diameter - 1.378 inches Outer bearing diameter -…

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Answer 4

It sounds as if you have taken all of the correct measurements to determine the correct hub and drum assembly for your trailer. Normally the spacing of the bearings is not an issue, as long as the axle used on the trailer is not an Agricultural axle…

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Answer 5

You can install different hubs with your preferred 5-on-4-1/2-inch bolt pattern on your existing Dexter axles so long as the new hubs use the same bearing set as the originals. This will ensure that the new hubs, such as Dexter #84545UC1-EZ that you…

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Answer 6

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 7

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 8

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 9

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 10

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 11

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 12

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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Is There a 12 Inch Brake Drum for a Dexter #84 Spindle Available?

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