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

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

Item # DM8202052
Our Price: $390.78
Brake Actuator
Shipping Weight: 64 lbs
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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. 1-800-940-8924 to order Demco brake actuator part number DM8202052 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 Mount - 20,000 lbs. Brake Actuator reviews from real customers.
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  • Reviews (2)
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  • Videos (1)
  • Photos

Demco Brake Actuator - DM8202052

  • Surge Brake Actuator
  • Drum Brakes
  • Flat Plate Only
  • 20000 lbs GTW
  • Weld-On
  • No Lockout
  • Straight Tongue Coupler
  • Demco

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.


Features:

  • Hydraulic actuator activates trailer's brakes when tow vehicle slows or stops
  • Adjustable plate has 4 different mounting positions for coupler (sold separately)
    • Designed for flat-mount coupler attachments only
  • Composite master cylinder is durable and efficient
    • Glass-reinforced nylon construction resists rust and corrosion
    • Large reservoir provides increased capacity for brake fluid
    • Automotive-style diaphragm cap creates completely enclosed system to help prevent contamination of fluid
  • Acetal copolymer lining provides smooth operation as actuator telescopes in and out
  • Breakaway included
  • Heavy-duty steel construction
  • Primed finish
  • Weld-on installation
  • Made in the USA


Specs:

  • Application: trailers with hydraulic drum brakes
  • Gross towing weight: 20,000 lbs
  • Maximum tongue weight: 2,000 lbs
  • Mounting: straight, 3" wide trailer tongue
  • Distance between mounting holes:
    • 4-1/2" Horizontally on center
    • 2-1/4" Vertically on center
  • Model number: DA20
  • 1-Year warranty


Mounting hole dimensions

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.


When you apply the brakes in your tow vehicle, deceleration occurs and momentum pushes your trailer toward the rear of your vehicle. With surge brake systems, the hydraulic actuator is triggered as your trailer moves forward, once your tow vehicle starts to slow down. When this happens, the actuator contracts, applying force to its master cylinder. This in turn supplies the necessary hydraulic pressure to engage your trailer's brakes.



8202052 Demco DA20 Hydraulic Trailer Brake Actuator for Drum Brakes - Flat Mount - 20,000 lbs





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

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Review of Demco Brake Actuator - Surge Brake Actuator - DM8202052

Hello, everybody, this is Jeff at etrailer.com. Today I'm gonna take a look at this Demco adjustable flat mount hydraulic brake actuator for drum brakes. Has a 20-000 pound gross towing weight capacity and is in a nice primed finish. Now, this hydraulic actuator will active your triggers, 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 a surge break system, this actuator is triggered as your trailer moves forward once the tow vehicle starts to slow down.

And when this happens, the actuator will contract, meaning the inner slide right here will go into the outer case, and it applies force back here to the master cylinder. This in turn will supply the necessary hydraulic pressure to engage your trailer's brakes. Now, they do use an acetal copolymer lining between this inner slide and the outer case. Provides a nice smooth operation as the actuator telescopes in or out. Up front here, the adjustable plate, you can see, has four different mounting positions for your coupler.

Now, the coupler's not included. We do sell those separately. And it is designed to use flat mount coupler attachments only. Just to give you the dimensions of the holes on the flat mount, if we measure the horizontal measurement center to center this way, it's gonna be right at 4 1/2 inches horizontally. And if we measure 'em vertically center to center this way, it's gonna be right at 2 1/4 inches.

Now, this is a heavy-duty steel construction. Has a nice primed finish to it. And the master cylinder back here, it is a composite master cylinder. Makes it durable and efficient. Basically it's a glass-reinforced nylon construction to resist rust and corrosion.

Does offer a large reservoir which provides increased capacity for your brake fluid. And up at the top here is the cap you can remove to put fluid in. It is an automotive-style diaphragm cap. Creates a completely enclosed system to help prevent contamination in the brake fluid. Also if you notice on top here, comes with this cable and hook. This is a breakaway cable and hook. It's all included. And this part is required by law because it prevents a trailer runaway situation. Basically what you'll do is when you hook up to your tow vehicle, you'll take this cable, extend it to the tow vehicle, and then using this hook with the keeper, hook it to your tow vehicle. And what happens in the case if the trailer happens to unhook from your tow vehicle, it'll pull on this cable, which'll activate this lever here, which again will apply the force to the master cylinder to stop your runaway situation. And again, it is required by law. Now, this part is a weld-on installation. Does mount to a straight three-inch-wide trailer tongue. This is made in the USA. A few specs on this, the application, this is for trailers with hydraulic drum brakes. This does have a gross towing weight capacity of 20,000 pounds, maximum tongue weight of 2,000 pounds. This also goes by the model number of DA20. And one last note I do wanna mention about this, because this actuator does not include a reverse lockout in the back here, it is recommended that you equip your trailer with either a reverse lockout solenoid that screws into your master cylinder or to have free-backing brakes on your trailer so that you can drive in reverse without this actuator triggering your trailer's brakes. But that should do it for the review on this Demco adjustable flat mount hydraulic brake actuator for drum brakes. Has a 20,000 pound gross towing weight capacity.


Customer Reviews

Demco Hydraulic Brake Actuator - Drum - Primed - Adjustable Flat Mount - 20,000 lbs - DM8202052

Average Customer Rating:  5.0 out of 5 stars   (2 Customer Reviews)

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.

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:


2
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See what our Experts say about this Demco Brake Actuator


Info for this part was:

Employee Leah B
Edited by:
Leah B
Employee Lindsey S
Written by:
Lindsey S
Employee Jeff D
Installed by:
Jeff D
Employee Laura H
Updated by:
Laura H
Employee Wilson B
Updated by:
Wilson B

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