This hydraulic actuator is built for serious towing, with a 12,500-lb gross towing weight and 1,250-lb maximum tongue weight. It uses surge operation to engage the trailer’s hydraulic drum brakes automatically whenever the tow vehicle slows or stops. The system gives you steady, predictable braking without wiring or external controllers. Whether you’re hauling equipment or working a tandem-axle setup, it delivers solid, consistent pressure through the master cylinder every time.
The 12-inch adjustable channel makes setup simple. It has five mounting positions so you can line up your coupler exactly where you need it. The channel works with standard ball couplers, lunette rings, or clevis attachments (sold separately), letting you match your trailer height for level towing. Once it’s in place, the fit is secure and ready for work.
The composite master cylinder is made from glass-reinforced nylon that resists rust and corrosion better than steel or aluminum. Inside, a large reservoir holds more brake fluid to keep the system full on long hauls. An automotive-style diaphragm cap seals out dirt and moisture to help prevent contamination, and an acetal copolymer lining keeps the actuator moving smoothly as it telescopes in and out.
A heavy-duty steel housing gives this actuator its strength, while the black powder coat finish protects it from chips and corrosion. It’s designed for weld-on installation on a straight 3" wide trailer tongue, giving a permanent mount that stands up to constant use. The included breakaway system adds protection by applying the brakes if the trailer ever separates from the hitch.
Between its sealed composite components and durable coating, this actuator handles demanding environments without rusting out. That’s a big advantage when maintaining or restoring trailers that see frequent water exposure or rough outdoor conditions. It stays smooth and dependable even after years of service.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Today we're going to be taking a look at Demco Hydraulic Brake Actuator. When you apply the brakes in your tow vehicle, the vehicle slows down and momentum actually pushes the trailer towards the rear of your vehicle. The hydraulic actuator is triggered as the trailer moves forward. When this happens the actuator contracts and applies force to the master cylinder. That, in turn, supplies the necessary hydraulic pressure to engage the brakes on the trailer. Ultimately, this unit, this hydraulic actuator activates the trailer's brakes whenever the tow vehicle slows down or stops. Some of the features about this one in particular, it's going to feature the adjustable channel.
This is going to offer five different mounting positions for a coupler. Couplers are sold separately but it really allows for ultimate versatility. These holes are going to be separated on center by two inches. The unit is constructed of a really nice, heavy-duty steel construction. It has a black, powder coated finish on it. It's going to do a great job at resisting rust and corrosion.
It's going to feature a composite master cylinder that's durable and efficient. It's going to feature a glass reinforced nylon construction to resist rust and corrosion. It has a nice, large reservoir on the unit. I'm actually going to try to turn it around here. Nice, large reservoir which you gain access to with the automotive-style, diaphragm cap. That's going to create a completely enclosed system to help prevent contamination of the fluid. The large reservoir provides an increased capacity for brake fluid. This right here is your connection point for the brake line. The unit also comes with the breakaway and what that is is that's this cable that runs to this lever arm right here.
This hook attaches to the tow vehicle and if the trailer and tow vehicle disconnect, and if the safety chains fail, the tow vehicle is going to pull on that which is going to pull the cable which would move this lever to the brake "on" position. What that does is that activates the trailer's brakes which would bring the trailer to an eventual safe stop to prevent a complete runaway situation. Breakaway is included. This is a weld-on installation. It's designed to mount on a straight, three inch wide, trailer tongue. The product is made here in the U.S.A.
It's designed for trailers with hydraulic drum brakes. The gross towing weight of the unit, when it comes to the capacity, is 12,500 pounds. Maximum tongue weight capacity is 1,250 pounds. The channel width, right here, if we take an internal measurement, inside edge to inside edge, that's going to give us a measurement of about three inches. Overall height of that channel bracket area is going to be twelve inches tall. The overall length of the unit from front to back is about twenty one inches long. Please note that because the actuator does not include a reverse lockout, it is recommended that you equip your trailer with Free-Backing brakes so that you can drive in reverse without the actuator triggering your trailer's brakes. Again, nice, solid, dependable unit and weld-on application. Steel construction in a really nice black powder coated finish to keep it safe and protected for a long time. That's going to do it for today's look at the Demco Hydraulic Brake Actuator.
Ratings & Reviews
works well
Thank You
I am very excited to find this site. It has so many of the items we use, ordering is simple, pricing is great. Thank you!
The product was delivered as promised and is of exceptional quality.
good quality, perfect for our operation
Never disappointed with the quality of the products
Very good
Always a pleasure working with etrailer.
Was a direct replacement for the original one on our trailer
Quick and easy, good onfo on part, fast shipping. Thanks
Everyone I spoke to was super helpful. My original order was back-ordered, I was able to change my order with one phone call.
Sturdier than the other brands, easy to bleed brake lines when installing.
Really BIG...Heavy, solid.. seems a bit overkill on my car trailer but it works. Tends to clunk when pulling away from a stoplight..
Repeat customer. Great service and quick shipping. I will continue to be a repeat customer.
Very very very good
These actuators are great. As long as you keep your brakes shoes adjusted also you can't beat it.
FAST SHIPPING AND RIGHT PART
Thanks for your great service and easy transaction buying at etrailer.
Attached is a picture of the product already installed and for the hitch that I bought in past from etrailer store.
I was very pleased with this purchase. Not only for the product but also for the fantastic customer service and follow up messages.
product was as described and worked great.....shipping was fantastic as well.
great job guys defiantly will shop again. IF anyone has reservations don't my experience was great. I don't normally write reviews however theses folks deserve it.
Great customer service and great shipping time. We at Baker Roofing Company will be repeat customers. Highly recommend etrailer.com .
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