What Is The Difference Between The DeeMaxx Disc Brake Kits DE66AR and DE57NR?  

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Expert Reply:

Hi Rick!

While both of these kits use the DeeMaxx Alpha G1600 Electric Over Hydraulic Actuator for Disc Brakes - 1,600 psi # DE47SR and DeeMaxx Hydraulic Brake Line Kit - Tandem Axle - 20' # DE57SR, there are a couple differences between them. I have each kit below with the parts that make up those differences:

DeeMaxx Disc Brake Kit w/ Actuator for Tandem Axle Trailers - 13" Hub/Rotor - 8 on 6-1/2 - 7K # DE66AR
-Disc Brake Assembly - 13" Hub/Rotor - 8 on 6-1/2 - Maxx Coating - 1/2" Bolts - 7K # DE56YR
-Trailer Wheel Bearing # 14125A

DeeMaxx Disc Brake Kit w/ Actuator for Tandem Axle Trailers - 13" Hub/Rotor - 8 on 6-1/2 - 7K # DE57NR
-Disc Brake Assembly - 13" Hub/Rotor - 8 on 6-1/2 - Maxx Coating - 9/16" Bolts - 7K # DE79TR
-Trailer Wheel Bearing # 02475

So really it's just the bolt size and the outer bearing that is different. The two bearing also have the same inner diameter (1.25"), but the # 14125A bearing has an outer diameter of 2.717" and the # 02475 bearing has an outer diameter of 2.687". I know that isn't much of a difference between the two parts and I can't fully explain the price difference, but those are the differences.

If you currently use 9/16" studs, you technically can go to the 1/2" option without having to change the wheels. You just need to make sure the lug nuts get you fully seated when you put said wheels on. Most wheels will not have any kind of problem with this part though. Oh and doing this will not affect the capacity of the axle either. If your axles were over 7K, it would limit you to 7K. The 9/16" and 5/8" will both work with 7K axles, but they go up in capacity from there. For 1/2" studs, 7K is as high as they should be taken.

The only problem with the Valcrum caps is that they are all threaded for this size hub. Both of these options use drive in caps as they are not threaded, so unfortunately, they would not be compatible with those. The caps included with these do have a center plug to access an EZ-Lube style spindle though. To get an option that could be used with Valcrum threaded caps, you would need to use the DeeMaxx Disc Brakes - Maxx Coat/Stainless Steel - 3/8" Bolts - 7,000 lbs - Qty 2 # DE94PR (two of them) and then add on the Alpha G1600 Actuator # DE47SR and Hydraulic Brake Line Kit # DE57SR. Just be aware that doing this will be a lot more expensive.

And nice camper! Are you wanting to upgrade from electric drums to disc brakes? And to follow up with that, what kind of brake controller are you currently using?

expert reply by: Lazer S

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