Determining Correct 12"x2" Trailer Hubs Compatible With 12"x2" Hydraulic Brakes

Question

Question:

Do these kits include the drum? AKFBBRK-7L-D and AKFBBRK-7R-D

asked by: Richard D

0

Expert Reply:

The Hydraulic Brake - Uni-Servo - Free Backing - Dacromet - 12" Left # AKFBBRK-7L-D and Right # AKFBBRK-7R-D you were looking at do not include the drum. To mount these brakes to your trailer you will also need Mounting Hardware # BRKH12

These brakes require a 12"x2" hub, but to determine the correct hub for your trailer you will need to know which inner and outer bearings your spindles use, and the bolt pattern of your current hubs.

The easiest way to accomplish this is by removing one hub and reading the numbers stamped on the front of the bearings. You can see this in the included video of the # L44649 bearing I included.

If your bearings are worn where you cannot read the number, you will need to use digital calipers like # PTW80157 and measure your spindle in the areas shown on the included diagram.

To find which bolt pattern your current hubs are, I included a helpful article that walks you through how to measure the bolt pattern on your wheels.

If you can provide me the bearing numbers/spindle measurements and which bolt pattern your current hubs are, I would be happy to recommend the correct hub that will work with the # AKFBBRK-7L-D and # AKFBBRK-7R-D brakes.

expert reply by: Samuel C

0

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Answer 1

Brake Assemblies like the Hydraulic Brake Kit - Uni-Servo - Free Backing - 12" - Left/Right Hand Assemblies - 5.5K to 7K item #AKFBBRK-7 will have the description in the title that the brakes are free backing. We also offer the same size…

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Answer 2

Hey Richard, thanks for reaching out! The Dexter DX7.5 Drop-N-Go Brake Actuator #099-175-00 is a great option for a replacement actuator because it's a direct replacement for the common Model 60 actuators that were popular in the…

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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

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 5

Traditionally, trailer manufacturers did not use electric brakes on boat trailers because the brake magnet wiring and trailer wiring did not always have the best insulation or water protection. These days, more and more manufacturers are using…

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Answer 6

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 7

The Lippert 2420801 hub is an 8k hub with an 8 lug bolt pattern so for a replacement you'd just need the part #8-285-10UC3-A.

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Answer 8

I spoke to Dexter and they said there is a bit of a process for installing the spindle nut properly. 1. You will need to thread on the inner nut, rotate the hub, then tighten the nut to 100 foot pounds. 2. Loosen the nut to remove the torque,…

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Answer 9

The torque for the Dexter Trailer Hub and Drum Assembly - 6,000-lb and 7,000-lb Axles - 12" - 5 Spoke Utility #8-174-5UC3 is not specified by the manufacturer. For 9/16 inch studs, the typical lug nut torque will be 120-140 ft lbs based on…

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Determining Correct 12"x2" Trailer Hubs Compatible With 12"x2" Hydraulic Brakes

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