Electric Drum Brake Recommendations for a 3,500 Pound Trailer Axle

Question

Question:

i tow a 16ft trailer with 2 3500lb axles on it. electric brakes on the back. This trailer is used everyday for work. What kind of brake would be best for me?

asked by: erik

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Expert Reply:

The most cost effective solution to add brakes would be to use your existing hubs and drums and use new electric drum brake assemblies. We have several options in the electric drum brake for 3,500 pound axles category. First, we have basic etrailer.com 10 inch drum brakes, # AKEBRK-35L (left hand) and # AKEBRK-35R (right hand).

We also carry the etrailer.com Self Adjusting Electric Brake Assembly, # AKEBRK-35L-SA (left hand) and # AKEBRK-35R-SA (right hand). The advantage of these 10 inch brake assemblies is that they automatically adjust themselves, saving time and money. If you would rather not be hands-on with brake adjustments, the self adjusting option is the way to go. I have included several videos about these products and an install video for your reference.

expert reply by: Reno H

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Answer 1

That's not an ideal situation but I can understand someone wanting to just replace a single assembly instead of replacing both if they couldn't get a match. So your best option would be to replace the right hand side with the part…

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Answer 2

The etrailer.com Self Adjusting brake assembly #AKEBRK-35L-SA works with a standard 10 inch by 2-1/4 inch hub drum, so as long as your current hub drum fits the standard 10 by 2-1/4 inch size, you would have no problem switching it to the new brake…

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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

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 5

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 6

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 7

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 8

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 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

The three most common lug stud sizes for a trailer are 1/2"-20, 9/16"-18, and 5/8"-18. In order to make sure you get the correct lug nuts you need to measure the lug studs on the trailer now as we have no way to look this up for…

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Answer 11

I have attached a chart you can check out that describes the torque needed per wheel size, wheel stud size and material. For an 8-inch wheel with a 1/2-inch wheel stud the torque is 75 to 86 ft-lbs. For a 15 inch steel wheel with 1/2 inch wheel studs…

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Answer 12

The two sizes you mentioned are pretty similar and fit many of the same 15 inch wheels. The 205/75-15 fits rim widths of 5 inch to 6-1/2 inch whereas the 225/75-15 fits widths that are 5 inch to 6 inch. The 205 is 27.1 inches tall and the 225 is 28.4…

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Electric Drum Brake Recommendations for a 3,500 Pound Trailer Axle

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