Demco Hydraulic Trailer Brake Actuator - Drum Brakes - Zinc Plated - Adjustable Channel - 8,000 lbs

Demco Brake Actuator - 8759121

Surge-type actuator features a corrosion-resistant composite master cylinder and durable zinc plating, making it perfect for marine applications. Adjustable channel lets you mount different coupler attachments (sold separately).

Features:

• Hydraulic actuator activates trailer's brakes when tow vehicle slows or stops
• Adjustable channel has 3 different mounting positions for coupler (sold separately)
• Zinc plating offers excellent corrosion resistance
  • 500-Hour salt spray rating - great for marine applications
• 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 ensures smooth operation as actuator telescopes in and out
• Breakaway included
• Heavy-duty steel construction
• Bolt-on installation
  • Requires 1/2" x 4-1/2" Grade-5 bolts (not included) for mounting
• Made in the USA

Specs:

• Application: trailers with hydraulic drum brakes
• Gross towing weight: 8,000 lbs
• Maximum tongue weight: 800 lbs
• Channel width: approximately 3-1/2"
• Mounting: 3" wide channel tongue
• Model number: DA91
• 1-Year warranty

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.

Sturdy, Corrosion-Resistant Construction

Made of sturdy steel, this hydraulic trailer brake actuator features a durable zinc coating that is designed to limit rust and corrosion. This zinc coat has a 500-hour salt spray rating, making the actuator perfect for marine use. In addition, the composite master cylinder is made of corrosion-resistant glass-reinforced nylon to further ensure durability for marine applications.

8759121 Demco DA91 Hydraulic Trailer Brake Actuator for Drum Brakes - Channel Center - 8,000 lbs