How to Select Hub/Drums & Electric Brakes For Trailer

Updated 11/27/2023 | Published 11/25/2023

Products Featured in This Question

Dexter Nev-R-Adjust Electric Trailer Brakes - 12" - Left/Right Hand Assemblies - 7K

(1726)

$430.44

Trailer Hub and Drum Assembly - 7,000-lb Axles - 12" Diameter - 8 on 6-1/2 - Pre-Greased

(1280)

$106.74

Question:

I need part#s for left and right electric drum brake assembly and the drums/rotors 4 brake assemblies and 4 drums. Also, do your drums come with inner and outer bearings prepacked? Thanks

asked by: Jason H

Expert Reply:

I'm sure we can get you a hub and drum assembly for your trailer but there's quite a bit of info needed in order to do so. To find the correct hubs you will need to take apart your current hub assembly and look at the bearings themselves; wipe away the grease and you should be able to see the part number stamped directly on them.

If you are unable to find them, you need to use a digital caliper and measure your spindle where the bearings and grease seal ride, like in the diagram I added below. You will also need to know the number of wheel bolts that are on your current hubs to make sure your wheels fit.

For example, if your inner bearing is 25580 (1.75" inner diameter), your outer bearing is 14125A (1.25" inner diameter), the grease seal has a 2.25" inner diameter, and you have an 8-lug hub, you would use the Trailer Hub and Drum Assembly - 7,000-lb Axles - 12" Diameter - 8 on 6-1/2 - Pre-Greased # AKHD-865-7-2-K.

Some hub and drums, like the example above, do come with the bearings pre-packed. Then for brakes, you need to know the weight capacity you need, the number of bolts for the mounting flange, and the inside diameter and depth of your drum. For example, the Dexter Nev-R-Adjust Electric Trailer Brake Kit # 23-464-465 are for 7,000 lb axles, measure 12" diameter x 2" wide (so that is the drum size they fit in) and fit a 5-bolt mounting flange.

I have added links below to our entire selection of hub and drums and electric brakes for you.

expert reply by: Kyle S