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  1. Brake Actuator
  2. Demco
  3. Surge Brake Actuator
  4. Drum Brakes
  5. Flat Plate
  6. 20000 lbs GTW
Demco Hydraulic Brake Actuator - Drum - Primed - Adjustable Flat Plate Mount - 20,000 lbs
Demco

Demco Hydraulic Brake Actuator - Drum - Primed - Adjustable Flat Plate Mount - 20,000 lbs

Part Number: DM8202152
$522.79
Retail:$570.22
You Save: $47.43
Brake Actuator
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Surge-type actuator features a rustproof aluminum master cylinder and a primed finish. Adjustable plate lets you mount different coupler attachments (sold separately) in 1 of 3 positions. Weld-on application with angled mounts. 1-800-940-8924 to order Demco brake actuator part number DM8202152 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 - Adjustable Flat Plate Mount - 20,000 lbs. Brake Actuator reviews from real customers.
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  • Reviews (4)
  • Q & A (0)
  • Videos (1)
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Demco Brake Actuator - DM8202152

Highlights

  • Handles Heavy Loads Easily: Rated for 20,000 lbs GTW and 2,000 lbs tongue weight for large trailers.
  • No Brake Controller Needed: Surge system automatically applies brakes as the tow vehicle slows.
  • Adapts to Different Couplers: Adjustable flat plate with 4 mounting positions for custom setups.
  • Built for Long Life: Rustproof aluminum master cylinder and primed steel body resist wear.
  • Smooth, Consistent Braking: High-pressure design gives 50 % greater displacement than standard units.
  • Easy to Weld On: Angled mounts simplify attachment to a 3" straight trailer tongue.
Made in USA

Features to know about

Built for the Long Haul: Heavy-Duty 20,000-lb Capacity

When you need serious braking muscle, this actuator is made to handle it. The heavy-duty steel construction and 20,000-lb gross towing weight rating give you the strength and control needed for large or loaded trailers. Its welded design mounts directly to a 3" wide tongue, creating a solid connection that feels steady on every trip. The angled weld mounts also make it easy to position and attach securely so you can get right to work.

Reliable Braking Power: Rustproof Aluminum Master Cylinder

The hydraulic system uses a rustproof aluminum master cylinder that’s built for high-pressure applications. It delivers strong, consistent braking force and allows 50 percent greater displacement than standard master cylinders. Inside, an acetal copolymer lining keeps the moving parts gliding smoothly as the actuator telescopes in and out. The result is even fluid pressure and dependable braking performance every time you slow down or stop.

Versatile Mounting Options: Adjustable Flat Plate with 3 Positions

The adjustable flat plate makes setup easy by giving you three different mounting positions for your coupler attachment (sold separately). Whether you’re using a standard ball coupler, a lunette ring, or a clevis mount, the plate lets you set the height so your trailer stays level behind your tow vehicle. It’s a simple way to fine-tune your setup without extra hardware or guesswork.

Ready for Real-World Use: Primed and Weld-On Design

This actuator comes primed and ready for welding, so you can finish it to match your trailer once it’s in place. The primed surface protects against corrosion during setup and provides a clean base for paint. The weld-on installation keeps everything tight and durable for long-term reliability on construction sites, work trailers, or any heavy-duty setup that demands lasting strength.

Built-In Safety: Integrated Breakaway System

A breakaway system is built right in to help stop your trailer if it ever becomes unhitched. It’s an added layer of safety that doesn’t require extra components or modifications—just connect it properly during installation and you’re protected if the unexpected happens on the road.

Specs

Application

  • Application: trailers with hydraulic drum brakes

Weight and Capacity

  • Gross towing weight: 20,000 lbs
  • Maximum tongue weight: 2,000 lbs

Mounting

  • Mounting: straight, 3" wide trailer tongue
  • Model number: DA20

Warranty

  • Warranty: 1-Year warranty

Note

  • Note: 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.

8202152 Demco DA20 Hydraulic Trailer Brake Actuator for Drum Brakes - Flat Mount - 20,000 lbs





Video of Demco Hydraulic Brake Actuator - Drum - Primed - Adjustable Flat Plate Mount - 20,000 lbs
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Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Built to Launch, Built to Last: Demco Breaks Down Their Surge Brake Actuators

Hello, neighbors, it's Brad here from etrailer and today I'm in Boyden, Iowa at the Demco headquarters and manufacturing facility where we got to see Demco products made. And these are all products that I handle on a daily basis when doing flat tows, fifth wheels, or even couplers. They cover so many different towing products and they have plenty of experts here to break down some of their products a little bit more to give you some understanding as well as allow me to ask those questions on products that I handle every day. So, Carter, what do we have here So, this is DA86 brake actuator model. This one is designed for disc brakes. We do also offer for drum brakes, as well, depending on what your trailer actually has on itself.

The nice thing about our actuators, they are all hydraulic-based, so they are all inertia-based. As you back up with the trailer, the brakes are applied as you back up and then going forward, obviously, when you come to a stop, the inertia on the inner slide tube itself will engage this as it's necessary. That will allow the brake fluid inside of the master cylinder reservoir here to go throughout the brakes. Brad So, what's the typical application for this So, this one here, this would be on smaller utility trailers, marine trailers, boat trailers. Obviously, with that as well, the plated finish here, a lot of marine applications will use that to prevent rusting.

That's kind of the main user for this. This is a light duty, so this is actually rated at 8,600 pounds. We do offer anything from 7,000 up to 20,000-pound actuators. So if I'm adding this to a trailer or replacing an old one, what's installation look like Yeah, so this one itself is a standard three-hole application. A lot of OEMs out there, trailer manufacturers out there, will have this standard three-bolt system on it.

We do have weld-on features, as well. A-frame options, definitely depends on what your trailer has as far as the application goes. We do kind of pride ourselves on flexibility with mounting applications, as well. So, it's designed to mount on a standard three-inch tongue, that's kind of industry standard out in the market. Basically, with this one, obviously, you'll have those three bolts that will allow you to take your existing one off, put this one on and away you go.

This red tab is catching my attention. I'm assuming that this is a lockout It is, you are correct, yes. So, most disc brake actuators will come standard with an electric lockout on the backside. Usually you have either a bypass solenoid or an inline solenoid that will just have two wires connecting to it. One's a power, one is a ground source. If there is a case where the ground is not proper, the solenoid isn't functioning like it's designed to, this is where this manual lockout comes into play. The nice thing with that, basically, all you would have to do in a standard situation, it would be down like that, flip the tab up. As soon as you back up, that does not allow for this inner slide tube to move in and apply those brakes. And then as soon as you pull forward with this, this tab would actually fall out of the way, that'll allow you to go in a normal state. Brad So, a nice little backup plan in case electronics aren't working, which I can imagine marine applications is probably one of those Right, yes, absolutely. So, obviously you wanna get your boat in the water. Best way to do that is to, obviously, backup with that. You don't wanna have the brakes apply when you do that. Obviously, it is a frustrating situation when the solenoid isn't working like it's designed to. So that's definitely a nice feature that that manual lockout comes into play. We got to see this manufactured today. Family-owned company here in Iowa, made in the US, so a great product. Carter, thank you for taking the time to show us your surge actuator. Yeah, thanks for stopping over. Appreciate it.

Ratings & Reviews

5.0

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by:
Had to replace a worn out surge brake on my 15 yr old equipment trailer. Just got it installed today, haven't got to put it to the test yet but it is exactly as described, best price I could find and a better unit than what I found from competitors. Etrailer is the first place I will look next time I'm in the market.
by:
Actuator is massive. Easy to disassemble for welding. Have put the bypass solenoid on the master cylinder, that too was easy. Will have to build a shield for it like what comes with the other kits.
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See what our Experts say about this Demco Brake Actuator


Info for this part was:

Employee Lindsey S
Written by:
Lindsey S
Employee Laura H
Updated by:
Laura H
Employee Wilson B
Updated by:
Wilson B
Employee Dustin K
Video Edited:
Dustin K

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