The built-in 12" adjustable channel gives you five mounting positions, so you can set up your coupler (sold separately) exactly where you need it. The channel-down layout allows for a greater drop, which helps line up tall trailers for a level towing setup. Whether you’re using a ball coupler, lunette ring, or clevis attachment, this design makes it simple to dial in the right height and keep your trailer tracking smoothly behind you.
The heavy-duty steel body is finished with a tough zinc coating that stands up to rust and corrosion. With a 500-hour salt spray rating, it’s built for use around water and road salt without flaking or pitting. That makes it a solid choice for trailers exposed to the elements or frequent launching.
The glass-reinforced nylon master cylinder resists corrosion and stays smooth in operation. Its large fluid reservoir means fewer refills and consistent hydraulic pressure under load. The automotive-style diaphragm cap seals the system to keep out dirt and moisture, so your brake fluid stays clean and your braking stays steady.
This actuator comes equipped with a built-in breakaway feature that applies the trailer brakes automatically if it ever disconnects from the tow vehicle. It’s one less piece of hardware to install separately and gives you peace of mind every time you hitch up.
Mounting is simple with a straight 3"-wide trailer tongue design. It bolts on using 1/2" x 4-1/2" Grade-5 bolts (not included), so you can fit it securely without extra drilling or welding. The result is a clean setup rated for 12,500 lbs gross towing weight and 1,250 lbs maximum tongue weight—ready to handle serious work or play.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Jeff: Hello, everybody. This is Jeff at etrailer.com. Today we're going to take a look at this Demco 12 inch adjustable channel down hydraulic drum brake actuator. Has a 12,500 pound capacity. Now this hydraulic actuator will activate your trailer's brakes when your tow vehicle slows or stops. Basically what happens is when you apply the brakes in your tow vehicle, deceleration occurs and the momentum will push your trailer towards the rear of your vehicle.
So with the surge brake system, this actuator is triggered as your trailer moves forward once your tow vehicle starts to slow down. So when this happened is the inner portion of this actuator will contract back and it applies force to the master cylinder in the back here and this in turn supplies the necessary hydraulic pressure to engage your trailer's brakes.Now it does use an acetone co-polymer lining on the inner portion here. That'll provide a nice smooth operation as the actuator telescopes in and out. And if you notice on the front, it is an adjustable channel design. So it does have five different mounting positions for your coupler and the coupler is not included.
We do sell that separately on our website. And it is a channel down design. You can see most of the channel is positioned down, so this will allow for a greater drop.Now this is a heavy duty steel construction. Now master cylinder in the back here, it is a composite master cylinder. It's very durable and efficient.
It's a glass reinforced nylon construction to resist rust and corrosion, and it provides a nice large reservoir, provides increased capacity for the brake fluid. And if you notice up at the top here, it uses an automotive style diaphragm cap, and that'll create a nice completely enclosed system to help prevent contamination of the brake fluid.Now, this does include this breakaway cable right here. Now this is required by law because it will prevent a trailer runaway situation. Basically what you do, you take this hook portion and you attach this to your tow vehicle. And then what'll happen is if by chance your trailer comes disconnected from your tow vehicle, it'll pull on this cable, which will activate this lever, which will apply pressure to the master cylinder.
Again, prevent the trailer from a runaway situation, it applies the brakes on the trailer, but it is included.Now this is a bolt on installation. You can see at the bottom here. Let me just go ahead and get this hook back up. There we go. But right down here at the bottom, you can see these holes, it's for a bolt on installation. Now this part is made in the USA. A Few specs on this. This is for trailers with hydraulic drum brakes. Gross towing weight capacity is 12,500 pounds. Maximum tongue weight capacity is 1,250 pounds. Now the channel width, which is the inside portion of the channel, if we put a ruler on that you can see the inside is three inches. The channel height, which will go from the bottom to the very top, is 12 inches tall. And when you go to install this, this is designed to mount onto a straight three inch wide trailer tongue.Now, this actuator also goes by the model number of DA10. And one last note on this is because this actuator does not include a reverse lockout in the back here, it is recommended that you equip the trailer or this actuator with either a reverse lockout solenoid are on your trailer to install free backing brakes. Either one of those, because then you can be able to drive in reverse without the actuator triggering your trailer's brakes.But that should do it for the review on this Demco 12 inch adjustable channel down hydraulic drum brake actuator with a 12,500 pound capacity.
Ratings & Reviews
Came in quickly and fit perfectly
exactly what i needed and and it came in 2 business days. I dig it!
GREAT! Helped us out in a bind. Ordered on Friday, part showed up in Cali on Tuesday! :)
It was exactly what my customer needed! Easy to find and priced right.
Exactly as advertised, seems heavy duty, master cylinder was easy to bleed, installed and functional within an hour, hardest part was removing previous old discontinued hits system.
Works great!
works like it should, just had to drill new holes but i knew that when i ordered it.
We hardly ever receive packing lists with shipments.
Was an exact replacement part. Worked g reat
Part was an exact match and shipping was Fast
The product was as expected. Product aside, I was thoroughly impressed with the customer service from Kim. I placed the order online and Kim called me within a half hour to let me know there was a three to four week lead time, but she had an alternate part for me. She changed the order and called the next day to let me know the parts had shipped. Just excellent service!
My first Time dealing with EZ Trailer. Great Customer service and fast Shipping !
The part worked perfectly fast service
etrailer is a great, fast delivery, great communications and great customer service!
Fast shipping and no damage in transit, could have used more packing do to the weight of the item so it wouldn’t bounce around. We know thing’s get handled a little ruff with the shipping company’s.
great job !
Solid unit, WOW was I impressed! Great company with excellent customer service. Don't think twice go for it!
Good morning , I do sales to the US NAVY, one of my customers asked if I could quote them ON THIS ITEM . With a few pictures (provided by my customer ) I then started my search , locating "etrailer.com "on line and finding the exact item then quoting it, and making the sale . This item will be used by the US NAVY .
Fast shipping, easy ordering and easy i nstallation
The Demco actuator is a great product for trailers that have hydraulic brakes, we have purchased 6 of these for our concrete mixing trailer and they work great! Also the team at eTrailers provided us with excellent customer service!
so easy to install. i had a harder time getting the old one off.
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