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Surge Brakes are now legal

Announcement from the Federal Motor Carrier Safety Administration United States Department of Transportation

   

DA66B Actuator
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Bolt on Couplers
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Hydraulic Surge Brakes


Brake Actuators

Brake Clusters

Brake Drums

Brake Line Kits

Demco Reps for Hydraulic Surge Brakes

Surge Brake Distributors


 
HYDRAULIC SURGE BRAKES

HYDRAULIC Surge BrakesDemco brakes are manufactured and assembled with the highest standards of quality to ensure safety and dependability. They are used by many manufacturers of trailers, including boat trailers.

Demco brake actuators provide a trailer braking system that is safe and reliable yet needs no special brake hookup or electric brake connections from vehicle to trailer required.

Demco Hydraulic Surge Brakes are now made with Composite Master Cylinders! Click here to learn more.


 


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BRAKE ACTUATORS

Brake Actuators

  • Actuators G.V.W.R. ranging from 6,000 - 25,000 lbs.
  • Actuator mountings include standard 3" and 50? A-Frame mountings.
  • 25,000 lb. actuators are 5th wheel mounting style.
  • 10,000 - 25,000 lb. actuators use U.H.M.W. linings to eliminate rollers.
  • 5,000 - 7,500 lb. incorporate heavy duty self-lubricating rollers.
  • Air-tight diaphragm in master cylinder cap, completely seals braking system from moisture and dirt contamination.
  • Emergency break-away lever with easy cable hookup and reset.
  • Several choices of couplers, pintle rings, and slide tube configurations available.
  • Actuators are available either primed or plated depending on the model.

    Select Order Number and use
    Acrobat Reader to view Owners Manual

For 6,000 lb., 7,000 lb. and 7,500 lb. G.V.W.R actuators
built before April 10, 2001 use owners manual BH20004

For 10,000 lb. G.V.W.R actuators built before
April 10, 2001 use owners manual BH20002

6,000 lb. G.V.W.R. Actuator
7,000 lb. G.V.W.R. Actuator
7,500 lb. G.V.W.R. Actuator
10,000 lb. G.V.W.R. Actuator
12,000 lb. G.V.W.R. Actuator
20,000 lb. G.V.W.R. Actuator

6,000 lb. GVWR Actuator
Item # Type Finish Description
8605001 DA66B Plated 2" Bolt On Coupler for Drum Brakes
8605101 DA66B Plated 2" Bolt On Coupler for Disc Brakes
8609101 DA91 Plated 2" Bolt On Coupler, Straight Tube
8609111 DA91 Plated 2" Bolt On Coupler, Drop Tube
8609112 DA91 Primed 2" Bolt On Coupler, Drop Tube
8609502 DA9150 Primed 2" Bolt On Coupler, Straight Tube,
50° A-Frame Mount
8609512 DA9150 Primed 2" Bolt On Coupler, Drop Tube,
50° A-Frame Mount
7,000 lb. GVWR Actuator
Item # Type Finish Description
8509202 DA91 Primed 2" Bulldog Coupler,
Welded to Straight Tube
8509212 DA91 Primed 2" Bulldog Coupler,
Welded to Drop Tube
8509602 DA9150 Primed 2" Bulldog Coupler,
Welded to Straight Tube,
50° A-Frame Mount
8509612 DA9150 Primed 2" Bulldog Coupler,
Welded to Drop Tube,
50° A-Frame Mount
7,500 lb. GVWR Actuator
Item # Type Finish Description
8759121 DA91 Plated Channel Mount, Channel Centered
8759122 DA91 Primed Channel Mount, Channel Centered
8759131 DA91 Plated Channel Mount, Channel Down
8759132 DA91 Primed Channel Mount, Channel Down
8759142 DA91 Primed Channel Mount, Channel Up
8759152 DA91 Primed Flat Plate Mount
8759411 DA91 Plated 2-5/16" Leverlock Coupler,
Welded to Drop Tube
8759522 DA9150 Primed Channel Mount, Channel Centered,
50° A-Frame Mount
8759532 DA9150 Primed Channel Mount, Channel Down,
50° A-Frame Mount
8759542 DA9150 Primed Channel Mount, Channel Up,
50° A-Frame Mount
8759702 DA95 Primed 2-5/16" Bulldog Coupler,
Welded to Straight Tube
8759712 DA95 Primed 2-5/16" Bulldog Coupler,
Welded to Drop Tube
8759802 DA9550 Primed 2-5/16" Bulldog Coupler,
Welded to Straight Tube,
50° A-Frame Mount
8759812 DA9550 Primed 2-5/16" Bulldog Coupler,
Welded to Drop Tube,
50° A-Frame Mount
10,000 lb. GVWR Actuator
Item # Type Finish Description
8101021 DA10 Plated Channel Mount, Channel Centered,
Standard Outer Case
8101022 DA10 Primed Channel Mount, Channel Centered,
Standard Outer Case
8101031 DA10 Plated Channel Mount, Channel Down
Standard Outer Case
8101032 DA10 Primed Channel Mount, Channel Down
Standard Outer Case
8101042 DA10 Primed Channel Mount, Channel Up
Standard Outer Case
8101532 DA10 Primed Channel Mount, 12" Channel Down
3-Bolt Mounting Case
8101052 DA10 Primed Flat Plate Mount, Standard Outer Case
8101222 DA10 Primed Channel Mount, Channel Centered,
Weld On Outer Case
8101232 DA10 Primed Channel Mount, Channel Down,
Weld On Outer Case
8101242 DA10 Primed Channel Mount, Channel Up,
Weld On Outer Case
8101522 DA10 Primed Channel Mount, 12" Channel Down,
Weld On Outer Case
8103102 DA10 Primed 2-5/16" Leverlock Coupler,
Welded to Straight Tube,
Weld On Outer Case
8101801 DA10 Plated 2-5/16" Leverlock Coupler,
Welded to Straight Tube,
Standard Outer Case
8101802 DA10 Primed 2-5/16" Leverlock Coupler,
Welded to Straight Tube,
Standard Outer Case
8102612 DA10 Primed 2-5/16" Leverlock Coupler,
Welded to Drop Tube,
Weld On Outer Case
8102511 DA10 Plated 2-5/16" Leverlock Coupler,
Welded to Drop Tube,
Standard Outer Case
8102512 DA10 Primed 2-5/16" Leverlock Coupler,
Welded to Drop Tube,
Standard Outer Case
8101922 DA10 Primed Channel Mount, Channel Centered,
15" Mount Outer Case
8101932 DA10 Primed Channel Mount, Channel Down,
15" Mount Outer Case
8101942 DA10 Primed Channel Mount, Channel Up,
15" Mount Outer Case
8102222 DA10 Primed Channel Mount, Channel Center,
50° A-Frame Mount
8102242 DA10 Primed Channel Mount, Channel Up,
50° A-Frame Mount
12,000 lb. GVWR Actuator
Item # Type Finish Description
8121202 DA12 Primed Drop Tongue
(used for agricultural running gears)
20,000 lb. GVWR Actuator
Item # Type Finish Description
8202022 DA20 Primed Channel Mount, Channel Centered,
Weld On Outer Case
8202032 DA20 Primed Channel Mount, Channel Down,
Weld On Outer Case
8202042 DA20 Primed Channel Mount, Channel Up,
Weld On Outer Case
8202122 DA20 Primed Channel Mount, 8" Channel Centered,
15" Mount Outer Case
8202132 DA20 Primed Channel Mount, 8" Channel Down,
15" Mount Outer Case
8202172 DA20 Primed Channel Mount, 12" Channel Centered,
15" Mount Outer Case
8202222 DA20 Primed Channel Mount, Channel Centered,
50° A-Frame Mount
8202232 DA20 Primed Channel Mount, Channel Down,
50° A-Frame Mount
8202242 DA20 Primed Channel Mount, Channel Up,
50° A-Frame Mount
8202522 DA20 Primed Channel Mount, 12" Channel Centered,
3-Bolt Mount Outer Case
8202532 DA20 Primed Channel Mount, 12" Channel Down,
3-Bolt Mount Outer Case
8202802 DA20 Primed 2-5/16" Leverlock Coupler,
Welded to Straight Tube,
Weld On Outer Case
8202912 DA20 Primed 2-5/16" Leverlock Coupler,
Welded to Drop Tube,
Weld On Outer Case

Return To Brake Product List.

 

 


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BRAKE CLUSTERS

BRAKE CLUSTERS

Demco brake clusters feature mounting interchangeability with most major brands of clusters. No need to modify axle or mounting flange. Three sizes of brake clusters are available, 10", 12", and 13".

  • 10" brake clusters are available in free-backing, self-adjusting uni-servo, uni-servo and duo-servo.
  • 12" brake clusters are available in free-backing and uni-servo.
  • Both 10" and 12" clusters can be ordered painted or galvanized for marine use.
  • 13" brake clusters come either uni-servo or free-backing and only painted.
  • Bolt mounting pattern for 10" cluster is either 4" on 4" or 4" on 3.96".
  • Bolt mounting pattern for 12" cluster is 5" on 3.875".
  • Bolt mounting pattern for 13" cluster is 4" on 4.50".

    Select Order Number and use
    Acrobat Reader to view Owners Manual

    10" Brake Clusters
    12" Brake Clusters
    13" Brake Clusters

 

10" Standard Free Backing Brake Clusters
Right Left Bolt Hole Pattern
SB40715 SB40716 4 Holes on 4" Diameter
SB19913 SB19914 4 Holes on 3.96" Diameter
10" Marine Free Backing Brake Clusters
Right Left Bolt Hole Pattern
SB40715M SB40716M 4 Holes on 4" Diameter
SB19913M SB19914M 4 Holes on 3.96" Diameter
10" Self Adjusting Uni-Servo Brake Clusters
Right Left Bolt Hole Pattern
SB23714 SB23715 4 Holes on 4" Diameter
SB24428 SB24429 4 Holes on 3.96" Diameter
10" Uni-Servo Brake Clusters
Right Left Bolt Hole Pattern
SB18787 SB18788 4 Holes on 4" Diameter
SB19915 SB19916 4 Holes on 3.96" Diameter
10" Marine Uni-Servo Brake Clusters
Right Left Bolt Hole Pattern
SB18787M SB18788M 4 Holes on 4" Diameter
SB19915M SB19916M 4 Holes on 3.96" Diameter
10" Duo-Servo Brake Clusters
Right Left Bolt Hole Pattern
SB18793 SB18794 4 Holes on 4" Diameter
SB19911 SB19912 4 Holes on 3.96" Diameter
12" Standard Free Backing Brake Clusters
Right Left Bolt Hole Pattern
SB42028 SB42029 5 Holes on 3.875" Diameter
12" Marine Free Backing Brake Clusters
Right Left Bolt Hole Pattern
SB42028M SB42029M 5 Holes on 3.875" Diameter
12" Uni-Servo Brake Clusters
Right Left Bolt Hole Pattern
SB23510 SB23511 5 Holes on 3.875" Diameter
12" Marine Uni-Servo Brake Clusters
Right Left Bolt Hole Pattern
SB23510M SB23510M 5 Holes on 3.875" Diameter
13" Standard Free Backing Brake Clusters
Right Left Bolt Hole Pattern
01971 01972 4 Holes on 4.813" Diameter
13" Standard Uni-Servo Brake Clusters
Right Left Bolt Hole Pattern
07911 07910 4 Holes on 4.813" Diameter

Return To Brake Product List.

 
BRAKE DRUMS

BRAKE DRUMS

10" and 13" brake drums are available from Demco.

  • Inventory of 10" drums for Sealed Bearing Hubs, 5 on 115mm bolt pattern available for immediate delivery.
  • Integral 10" Hub & Drum combination with 5 on 4.5" bolt pattern are supplied with bearings, seals and dust cap. They are designed for 1.250" brake flange set back.
  • 2 choices of 13" brake drums available through Demco. Either the flat or offset drums are designed for 16-22" wheels. Bolt pattern information must be provided at time of the request.

 


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BRAKE LINE KITS

BRAKE LINE KITS

Demco Line Kits are manufactured, assembled and packaged to meet the highest quality standards.

  • Single and Tandem Solid Axle Kits with various length lines can be packaged upon request.
  • Single and Tandem Torsion Axle Line Kits with various line lengths can be requested also.
  • Line construction is of fusion brazed, annealed and tempered, automotive grade SAEJ527 steel tube.
  • Automotive grade hose assemblies are included in the premium brake line kits.

Select Order Number and use
Acrobat Reader to view Owners Manual


 

Single Solid Axle Kit
5402 Standard
5426 With 80" and 17" Lines
5427 With 72" Lines
Tandem Solid Axle Kit
5403 Standard
5429 With 80" and 17" Lines
5428 With 72" Lines in lieu of 66" Lines
Single Torsion Axle Kit
5424 Standard
Tandem Torsion Axle Kit
5425 Standard

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Last Updated: August 8, 2006