Recommended Conversion Kit for Disc Brakes On 7,000 Lb Dexter Axles

Question:

I have a 5th wheel with two 7000 lbs Dexter axles leaf spring. I want to replace the drum brakes with disk brakes. Which products do you recommend? Thanks,

asked by: Gert B

Expert Reply:

The best electric drum to hydraulic disc brake conversion kit we offer for a trailer with tandem 7,000 lb axles is the HydraStar Disc Brake Kit with Actuator for Tandem Axle Trailers part # HSE7K-T1. This is a complete kit that has everything you need so no extra trips to the store or waiting for things to arrive online. It comes with the hub/rotors, calipers, mounting brackets, brake lines, actuator, and other other hardware and fittings needed. Just add brake fluid and you're done.

expert reply by: Conner L

Brad S.

3/14/2024

do 7k and 8k used the same axle spindle, just different bearings?

Mike L.

3/14/2024

@BradS There are similarities and important differences between the bearings/spindle setups used for a 7 and 8K axle. Both use the same 25580 inner bearing, but the 8K uses a bearing that has a slightly larger OD. Also, the 7K spindles can use two different grease seals depending on the diameter of the spindle surface where the seal rides, one with a 2.125 ID, the other uses a seal with a 2.25 ID seal. The 8K uses a 2.25 ID seal. So, the short answer is maybe yes, maybe no. Hope that helps explain it for you!