Recommended Brake Assemblies and Hub Drums for 3500 lb Axle

Updated 11/09/2021 | Published 11/07/2021

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Question:

hi.. I just bought a 2019 carmate 6x12 enclosed. model CM612EC it does not come with brakes. i assume i can get brake spindles/drums and bolt it on? can you let me know what I need for hardware? i know i will need a harness and i already have a brake controller. its a single axle 3,500lb Axle 2,990 GVWR ST205/75D15C Bias 5B White Spoke Wheel

asked by: Mike

Expert Reply:

If your axle has brake mounting flanges in place, installation will be easy. The brake mounting flange will sit directly behind the existing hubs, and will have 4 holes that measure 2-7/8 inches apart, center to center to the adjacent hole as shown in the provided photo. If you don't have a brake mounting flange, you'll need to have one like # 4-35 installed. Since it's crucial that the flange be installed so it's perfectly straight and concentric, you'll want to have a professional tackle the job.

For a brake assembly, I'd recommend a self adjusting 10x2 brake assembly like part # AKEBRK-35-SA. You'll also need a hub/drum. A 3500 lb hub/drum uses a L68149 inner and a L44649 outer wheel bearing. 3500 lb axles will typically have a 5 on 4-1/2 Inch bolt pattern, so you'll want to check out the linked help article that will assist you in determining your wheel bolt pattern. The easiest way to confirm you have a 5 on 4-1/2 inch bolt pattern would be to measure from the center of one wheel stud on your existing hubs to the center of the adjacent stud. If that distance is 2-5/8, you definitely have a 5 on 4-1/2 inch bolt pattern.

If that's the bolt pattern you have and your current idler hubs use the bearings mentioned above, I'd recommend the # AKHD-545-35-EZ-K hub/drum.

expert reply by: Mike L