bing tracking image
  1. Brake Actuator
  2. Demco
  3. Surge Brake Actuator
  4. Drum Brakes
  5. Flat Plate
  6. 12500 lbs GTW
Demco Hydraulic Brake Actuator - Drum - Primed - Adjustable Flat Plate Mount - 12,500 lbs
Demco

Demco Hydraulic Brake Actuator - Drum - Primed - Adjustable Flat Plate Mount - 12,500 lbs

Part Number: DM8101952
$425.43
Retail:$521.84
You Save: $96.41
Brake Actuator
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.
By submitting this form, you understand and agree to our Terms of Sale, Website Terms of Use and Privacy Policy.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

Need help with installation?
Locate installers near me
Surge-type actuator features a corrosion-resistant composite master cylinder and a primed finish. Adjustable plate lets you use different flat-mount coupler attachments (sold separately). Weld-on application with angled mounts. 1-800-940-8924 to order Demco brake actuator part number DM8101952 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 - 12,500 lbs. Brake Actuator reviews from real customers.
  • All Info
  • Reviews (4)
  • Q & A (0)
  • Videos (2)
  • Photos

Demco Brake Actuator - DM8101952

Highlights

  • Smooth, Automatic Braking: Surge system applies trailer brakes as your tow vehicle slows.
  • Built for Heavy Loads: Rated for 12,500 lbs GTW and 1,250 lbs tongue weight for demanding hauls.
  • Corrosion-Resistant Design: Composite master cylinder and primed steel body guard against rust.
  • Flexible Setup Options: Adjustable flat plate offers 4 mount positions for different couplers.
  • Ready for Welding: Angled weld-on mounts simplify attachment to a 3" straight tongue.
  • Clean, Reliable Operation: Sealed diaphragm cap keeps brake fluid protected from contamination.
Made in USA

Features to know about

Heavy Loads, Confident Stopping: 12,500 lbs Surge Power

This actuator is made for reliable control when you’re hauling serious weight. It’s rated for 12,500 lbs gross towing weight and 1,250 lbs tongue weight, so it delivers strong hydraulic pressure to your drum brakes whenever your tow vehicle slows down. The surge design automatically applies braking force through built-in momentum, which means smooth, consistent stops with no need for electronics or wiring.

Built to Last: Primed Steel Body with Composite Master Cylinder

The heavy-duty steel construction gives this actuator the strength to handle demanding trailer work, and the primed finish protects the surface until you’re ready to paint it. Inside, the composite master cylinder made from glass-reinforced nylon resists rust, pitting, and corrosion far better than metal cylinders. Its large reservoir keeps plenty of brake fluid on hand and helps maintain solid pressure over time.

Clean Fluid System: Sealed Diaphragm Cap and Smooth Operation

The automotive-style diaphragm cap keeps the master cylinder fully enclosed so dust and moisture can’t contaminate the brake fluid. That sealed setup helps prevent air or water intrusion that could affect braking performance. An acetal copolymer lining inside the actuator housing keeps the telescoping motion smooth every time it engages.

Flexible Mounting: Adjustable Flat Plate with 4 Positions

The adjustable plate gives you four different mounting positions so you can fine-tune how your flat-mount coupler (sold separately) lines up. The angled weld mounts make installation straightforward on a straight 3" wide trailer tongue, giving you a solid connection that’s ready for hard use on construction or utility trailers.

Added Safety: Built-In Breakaway Protection

A built-in breakaway system is already part of the unit. If the trailer ever separates from your tow vehicle, it automatically activates your brakes to bring things to a stop. That extra layer of protection gives peace of mind whenever you’re on the road or moving heavy equipment around.

Specs

Application

  • Application: trailers with hydraulic drum brakes

Weight and Capacity

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

Mounting

  • Mounting: straight, 3" wide trailer tongue

Model Information

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

Note

  • Recommendation: 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.

8101952 Demco DA10 Hydraulic Trailer Brake Actuator for Drum Brakes - Flat Mount - 12,500 lbs

Installation Details DM8101952 Installation instructions



Video of Demco Hydraulic Brake Actuator - Drum - Primed - Adjustable Flat Plate Mount - 12,500 lbs
Video Thumbnail Video Player Dialog

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

4 reviews
Review sort icon
Surge-type actuator features a corrosion-resistant composite master cylinder and a primed finish. Adjustable plate lets you use different flat-mount coupler attachments (sold separately). Weld-on application with angled mounts.

by:



by:



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.


4
4

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
Employee Steven C
Installed by:
Steven C

At etrailer we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.