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  1. Brake Actuator
  2. Demco
  3. Surge Brake Actuator
  4. Drum Brakes
  5. Channel
  6. 12500 lbs GTW
Demco Hydraulic Brake Actuator - Drum - Primed - A-Frame - Adjustable Channel Center - 12,500 lbs
Demco

Demco Hydraulic Brake Actuator - Drum - Primed - A-Frame - Adjustable Channel Center - 12,500 lbs

Part Number: DM8102222
$477.83
Retail:$543.02
You Save: $65.19
Brake Actuator
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Surge-type actuator features a corrosion-resistant composite master cylinder and a primed finish. 8" Adjustable channel lets you mount different coupler attachments (sold separately) in 1 of 3 positions. Welds onto a 50-degree A-frame trailer. 1-800-940-8924 to order Demco brake actuator part number DM8102222 or order online at etrailer.com. Free expert support on all Demco products. Great prices and Fastest Shipping for Demco Hydraulic Brake Actuator - Drum - Primed - A-Frame - Adjustable Channel Center - 12,500 lbs. Brake Actuator reviews from real customers.
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  • Reviews (41)
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Demco Brake Actuator - DM8102222

Highlights

  • Strong Braking Power: Rated for 12,500 lbs GTW and 1,250 lbs tongue weight for heavy loads.
  • No Brake Controller Needed: Surge system automatically applies drum brakes as you slow.
  • Built to Last: Composite master cylinder and glass-reinforced nylon resist rust and wear.
  • Flexible Coupler Setup: 8" adjustable channel fits a variety of couplers in 3 positions.
  • Clean Brake Fluid System: Enclosed diaphragm cap prevents contamination and leaks.
  • Weld-On A-Frame Fit: Mounts to 50° A-frame trailers for a solid, permanent installation.
Made in USA

Features to know about

Primed and Ready: Built for Welding

This actuator comes with a primed finish, giving you a solid base that’s ready for welding onto a 50-degree A-frame trailer. You don’t have to strip off paint or coatings before starting. Once it’s mounted, the primer helps protect the heavy-duty steel construction from corrosion until you’re ready to paint it to match your trailer. It’s a clean, straightforward setup that saves time during installation.

Flexible Setup: 8" Adjustable Channel with 3 Positions

The built-in 8" adjustable channel makes it easy to dial in your coupler height so your trailer sits level. With three mounting positions, you can fit almost any coupler style—standard ball coupler, lunette ring, or clevis attachment (each sold separately). The channel uses a standard 3" width, so it pairs easily with compatible hardware like the Bulldog or Demco couplers.

Consistent Braking Power: Composite Master Cylinder with Large Reservoir

The composite master cylinder is made from glass-reinforced nylon that resists rust and corrosion. It’s built for long life and smooth performance with hydraulic drum brakes. The large reservoir gives you more brake fluid capacity, cutting down on refills and helping prevent air from entering the system. An automotive-style diaphragm cap keeps everything sealed, reducing the chance of fluid contamination.

Smooth Operation: Acetal Copolymer Liner and Built-In Breakaway

Inside, an acetal copolymer liner keeps the actuator moving freely as it telescopes in and out under braking. The built-in breakaway system adds peace of mind by applying the brakes automatically if the trailer ever separates from the tow vehicle. Together they help your setup stop smoothly and reliably every time you tow.

Heavy Load Capability: 12,500 lbs GTW Rating

With a gross towing weight rating of 12,500 lbs and 1,250 lbs maximum tongue weight, this surge-type actuator delivers dependable performance on demanding hauls. It’s designed for use with hydraulic drum brakes and gives you the solid braking control needed for heavy trailers without relying on electronic components or external power sources.

Specs

Application

  • Application: 50-degree A-frame trailers with hydraulic drum brakes

Weight and Capacity

  • Gross towing weight: 12,500 lbs
  • Maximum tongue weight: 1,250 lbs

Dimensions

  • Channel width: approximately 3"
  • Channel height: 8"

Model Information

  • Model number: DA10
  • Warranty: 1-Year warranty

Note

  • Important: Because this 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.

8102222 Demco DA10 Hydraulic Trailer Brake Actuator for Drum Brakes - A-Frame - Channel Center - 12,500 lbs

Installation Details DM8102222 Installation instructions



Ratings & Reviews

4.9

41 reviews
Review sort icon
Surge-type actuator features a corrosion-resistant composite master cylinder and a primed finish. 8" Adjustable channel lets you mount different coupler attachments (sold separately) in 1 of 3 positions. Welds onto a 50-degree A-frame trailer.

by:

You did a great job and we received it very quickly. Thank you.



by:

Great design. Easy to install. Very sturdy and excellent updated features



by:

perfect! its exactly what i needed.



by:

Perfect , the delivery was faster than expected. The product is real good quality.
Thanks for your great service.
Regards,
Marcel



by:

Extremely happy with service and product. Thank You!



by:

Good product for a reasonable price. Product availability and service was excellent.



by:

Excellent product. Exact product as shown. Quality materials. Quick to ship and receive.



by:

Super replacement and much cheaper than the bulldog style.



by:

The people at E-trailer were very helpful and the product that came was exactly what i needed.



by:

Needed this for a water trailer. Couldn’t find one locally. Ordered and received very quickly. Item was as pictured and looks like it should work great!



by:

this hitch was by far beyound my expections they will get most of my business



by:

Very happy with my purchase. It was a good price, easy to order and was received in short time. Thank you!



by:

Very good product. I have been a fabricator for 42 years, and I will say this is very well made. etrailer.com is a great place!



by:

Have not installed yet, but the product appears to be of high quality and heavy weight steel. Looks great.. would reccomend to anyone!



by:

far superior to what it is replacing. well constructed, fast shipping.
Thanks again for supplies a quality product keep it up!



by:

Really pleased on the outcome. I did have to paint where I had to weld. Would be nice to have the color to match the metal.



by:

Amazing upgrade from magnetic brakes! Brittany was friendly, prompt, knowledgeable.



by:

Very impressed! This will be perfect for my trailer rebuild.



by:

Product has met my expectations. The customer service at etrailer is fantastic.



by:

The product was just what I expected. The real story was that etrailer had a delay in shipping due to a manufacturer issue. Etrailer stayed in constant contact with me and made sure I was up to date on every stage of the order. AAA+ service...!!!



by:

Thanks for your help in these trying times. I am restoring the surge brake operations to a 1985 Wells cargo enclosed trailer and performing all of the work myself. Not an easy task on a 36 year old trailer purchased new. I received this part and it is fantastic and arrived many days ahead of the projected delivery date. My prior orders also arrived early and the trailer brake parts and lines fit perfectly. Thank you for providing the service and knowledge to get me what I needed to restore an obsolete trailer. I can provide photos on completion. I may need to order new parts again in 36 years, I will be 94.



by:

Yes i recieved the device , I'ts better than i expexted , very well built , Can definetely handle more weight than designed for, P/S I invented the device about 45 years ago. The device takes the shifting weight away from the hitch and tong of the trailer. The first device used a coil spring, The device i recieved uses a shock works the same as a coil spring.



by:

excellent!. I painted with the trailer color



by:

Awesome unit, but did not come with installation or system bleed instructions.



by:

The weld on installation matched the trailer tongue angle perfectly and is a very rugged build. I connected the hydraulic line to the original brake tubing, bled the brake fluid through the system using pressure with the break away lever and put the trailer back to work. The braking power is smooth and consistent. The only trouble is when I back the trailer up an incline. I would purchase the backing option lever so you don’t have the trouble backing the trailer putting on the brakes.


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