Marshall Trailers

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...Marshall machines sold since 1952

Hybrid Dumper Trailers / HD-12


Features and Specifications

  • Standard Tyres: 385-65 x 22.5
  • Standard Axle: Tandem 80mm 8 Stud Axle 350 x 90 Brakes
  • Capacity: 12 tons / 7 cu.mtrs
  • Body: 16' x 7' 9" x 2' Flat-back Design
  • Standard Equipment: Spring Drawbar / Hydraulic Door - Removable / Flat-back Design / Front Body Prop / LED Side Marker Lights / LED Lights / Dealer Fit Ready
Basic Price: £17,000.00
  • Features
    • HD Stone Guard
      HD Stone Guard – The HD range comes with a standard stone guard at the front to help protect the tractor operator and the tractor itself from debris.It is formed by our CNC machines and is bolt-on allowing it to be replaced if it is damaged or completely removed for better visibility.
    • HD Lighting Arrangement
      HD Lighting Arrangement – Every model in the HD range has lights as standard and uses the sealed wiring system fitted to all Marshall products, preventing water damage and allowing the light units to be easily replaced if damaged. In addition the lights are recessed into the back rails and guarded to make them as safe as possible.
    • HD Range: Rubble & Stone
      HD Range: Rubble & Stone – The floor on the HD/6 model is 6mm thick, with the rest of the range benefiting from an 8mm rock floor. The HD/6 and HD/8 models have 5mm sides, with larger models being fitted with 6mm sides. The pressed design of the body further adds to the overall strength and rigidity; ensuring each model can handle rubble, stone or any other heavy material. In addition each model has been designed with a very generous cubic capacity to ensure that the stated loads can actually be carried.
    • HD Range: Muck
      HD Range: Muck – The large cubic capacities and robust build makes the hybrid dumper range ideal for carrying muck. The elevated rear tipping points and high tipping angle allows the load to be heaped up when discharged.
    • Paint Finish
      Paint Finish – Since November 2011 we have shot-blasted, this is acknowledged in the paint industry as the best possible method for preparing steel for painting. The shot-blasting creates a profile for the paint to adhere to, improving adhesion and in turn the protection offered to the steel. Our five man team of trained sprayers then use the latest spraying equipment to finish our products with a dual layer paint finish. Every machine is finished with 80 microns of high-build primer and 50 microns of gloss polyurethane; this combination provides excellent protection and a high-quality finish.
    • HD Hydraulic Door Design
      HD Hydraulic Door Design – The entire HD range benefits from the option of a hydraulic door to compliment the standard scow-end and increase carrying capacity. The hydraulic door option can also be “dealer fitted” to every model, allowing the trailers to be upgraded in the future.
    • HD Tipping Mechanism
      HD Tipping Mechanism – The tipping mechanism is also very robust; with the HD/12 model upwards utilising chrome rams to prevent corrosion and premature seal failures. In addition the tipping points on larger models are formed by 50mm steel pins.
    • HD Suspension
      HD Suspension – Our tandem axle models all come as standard with split-oscillating suspension, which eliminates lateral movement. This combined with a wide chassis and wide spaced rams ensures maximum stability when tipping.
    • Delivery
      Delivery – Marshall Trailers uses a computerized build system to plan production to ensure that machines are delivered on time. The final stage of delivery is undertake by our two artic lorries, a 7.5ton rigid lorry and a number of other haulage partners.
    • Spare Parts
      Spare Parts – Marshall Trailers has a full selection of spare parts for all our ranges, most of which can be dispatched immediately. In some cases we have spares for machines dating back forty years, which gives you peace of mind when buying a Marshall that you will be properly supported well into the future.
  • Overview

    Features at a Glance

    • A 60° tip angle (ensures safe and efficient discharge of any load)
    • Elevated rear tipping point allows loads to be easily heaped up
    • Standard hydraulic door that can be removed to allow bulky loads to be safely discharged.
    • Fully integrated rear lights positioned to avoid damage from the discharging load
    • 8mm rock floor and 6mm sides limit the potential damage to the body
    • Twin two stage ram allows for a more stable tip
    • Oscillating split tandem axle significantly increases stability over a spring type suspension
    • Genuine Marshall Spares – a full collection of spares are available for all models in the range

    The HD/12 hybrid dumper has been designed to combine strength and durability to provide a tough trailer with a generous capacity. The result of this design is a trailer that can be used for stone and rubble, but also bulkier loads such muck.

    It has an 8mm floor and 6mm sides, which forms an extremely robust body that can cope with carrying rocks and other heavy loads that could potentially damage a lighter trailer. The body also has a generous number of bearers to further improve its durability. In addition the HD/12 also comes with a flat-back as standard allowing it to be used for rubble and loading machines into for transportation. To further enhance the trailer's strength the tipping points are 50mm thick.

    The chassis on this model uses the same design as our QM range, formed from a channel with a reinforcing plate to provide unmatched strength and rigidity. The twin chrome rams on the HD/12 tip to 60 degrees to guarantee that loads are safely and efficiently discharged. The tandem axle design of this model allows it to be fitted with oscillating split tandem suspension to provide excellent stability. On top of this all our dumpers are fitted with lights and hydraulic brakes as standard ensuring that they meet all health and safety regulations.

    The large capacity and upgraded running gear means the HD/12 is ideal for tackling all the tough and difficult jobs around the farm.

  • Specification & Prices
    Body Size11' 6" x 6' 6" x 1' 9"14' x 7' 9" x 1' 9"16' x 7' 9" x 2'16' x 7' 9" x 2' 6"16' x 7' 9" x 3'
    Body ShapeScow-endScow-endFlat-backFlat-backFlat-back
    Standard Tyre Size12.5 x 15 - 14 ply12.5 x 15 - 14 ply385 - 65 x 22.5385 - 65 x 22.5385 - 65 x 22.5
    Axle70mm 6 stud70mm 6 stud Tandem80mm 8 stud Tandem80mm 8 stud Tandem120mm 10 stud Tandem
    Brake300 x 60300 x 60350 x 90350 x 90420 x 180 S Cam
    Carrying Capacity6 tons8 tons12 tons14 tons16 tons
    Floor Thickness (Rock)6mm6mm8mm8mm8mm
    Side Thickness5mm5mm6mm6mm6mm
    Lights & Hyd BrakesStandardStandardStandardStandardStandard
    Volume Basic131 cu.ft / 3.7 cu. mtrs190 cu.ft / 5.4 cu.mtrs247 cu.ft / 7 cu.mtrs307 cu.ft / 8.7 cu.mtrs370 cu.ft / 10.5 cu.mtrs
    Basic Trailer Weight1760 kg2990 kg4920 kg5140 kg5540 kg
    Loading Height60"62"71"77"83"
    Tip Angle Degree5560606060
    400-60 x 15.5£420 / (DF-0.5)£840 / (DF-1)N/AN/AN/A
    340 x 65 x 18 Radial£998 / (DF-0.5)£1996 / (DF-1)N/AN/AN/A
    445 x 45 x 19.5 (Lowers bed height by 75mm)N/AN/A£1,360£1,360£1,360
    550-45 x 22.5 c/w MudguardsN/AN/A£2,257£2,257N/A
    560-45 x 22.5 c/w MudguardsN/AN/A£2,947£2,947£2,947
    Mudguards / Wings - Bolt OnN/AN/A£417£417£417
    Spring Drawbar (Adjustable)N/A£845StandardStandardStandard
    Hydraulic Tail Door£1062 / (DF-3)£1062 / (DF-3)Standard - RemovableStandard - RemovableStandard - Removable
    Hyd Door Safety Valve£215 / (DF - 1.5)£215 / (DF - 1.5)£215 / (DF - 1.5)£215 / (DF - 1.5)£215 / (DF - 1.5)
    Trailer Cover (640g PVC)£227 / (DF-1)£227 / (DF-1)£306 (DF-1)£306 (DF-1)£306 (DF-1)
    Hydraulic Front to Back CoverN/AN/A£3,680£3,680£3,680
    LED Beacon£145 / (DF-0.25)£145 / (DF-0.25)£145 / (DF-0.25)£145 / (DF-0.25)£145 / (DF-0.25)
    LED Tail LightsStandardStandardStandardStandardStandard
    LED WorklightsN/AN/A£380 / (DF-2)£380 / (DF-2)£380 / (DF-2)
    10 Stud Commercial Axle 406 x 120N/AN/A£1,364£1,364N/A
    10 Stud Commercial Axle c/w ABS & Air BrakesN/AN/A£4,620£4,620£3108 / (DF-6)
    Air/Oil Brakes c/w Load SensingN/A£1,517 (DF-4)£1,517 (DF-4)£1,517 (DF-4)£1,517 (DF-4)
    Rear Tow Hitch c/w Lights & BrakesN/A£425 / (DF-2)£325 / (DF-2)£325 / (DF-2)£325 / (DF-2)
    Rear Ramps (Aluminium)N/AN/A£1700 / (DF-0.25)£1700 / (DF-0.25)£1700 / (DF-0.25)
  • Owners Info
  • FAQ's
    • What are the current regulations on agricultural trailer brakes?

      Read more

      What are the current regulations on agricultural trailer brakes?

      The law currently states that trailers travelling below 25mph have to have a braking efficiency of at least 25% (UK Road Vehicle Construction & Use Regulations). Above this speed it is unclear exactly what requirements an agricultural trailer has to meet, whether it is commercial braking requirements or still simply a 25% braking efficiency.

      There is currently EU legislation under discussion which would implement a 50% braking efficiency for agricultural trailers, but this has been already been debated for a number of years without it becoming law. It seems unlikely that it will be implemented within the next few years, if ever, since this would impose higher braking standards than required on commercial vehicles.

      Marshall products are fitted with hydraulic brakes as standard and on average provide a braking efficiency of 35%, which exceeds the current legal requirements. This impressive baseline performance is achieved by fitting high quality axles supplied by the world’s leading axle manufacturer, combined with enlarged 25mm brake cylinders and durable 2 wire hoses.

      Take time to examine the specifications of our models and take note of the brake sizes and axles sizes. In particular notice we fit commercial 420 x 180 10 stud axles as standard on our QM/14, QM/16, QM/1600 and QM1800 models; not 10 stud industrial axles, which provide significantly reduced performance. The way to tell the difference between these axles is a commercial axle uses an S-cam brake rode while an industrial axle uses a flat-cam brake rod.

      If a customer requires enhanced braking performance we also offer air brakes with loading sensing, full ABS systems and a number of axle upgrades. This guarantees a Marshall trailer can meet current legal requirements now and any EU legislation that could potentially be introduced in the future.

  • Additional Equipment Extra
    • Spring Suspension

      Spring Suspension

      Part No.


      No-cost Option. Provides excellent performance on the road.

    • Split Oscillating Suspension

      Split Oscillating Suspension

      Part No.


      No-cost Option. Reduces lateral movement making high-loads more stable.

    • 355-50 x R22.5 Wheels

      355-50 x R22.5 Wheels

      Part No.


      These tyres provide excellent road performance and reduce the bed height of bale trailers by 150mm and 75mm on other models. Please note all prices are in place of standard tyres.

    • 550-45 x 22.5 Flotation Wheels c/w Wings/Mudguards

      550-45 x 22.5 Flotation Wheels c/w Wings/Mudguards

      Part No.


      These tyres are excellent in wet conditions and significantly reduce the ground compaction of the machine; ideal if the machine is predominantly used off-road. This price includes the necessary mudguards. Please note all prices are in place of standard tyres.

    • 560-45 x 22.5 Radial Flotation Wheels c/w Wings/Mudguards

      560-45 x 22.5 Radial Flotation Wheels c/w Wings/Mudguards

      Part No.


      These tyres excell at both on road performance and off-road performance and are the best all-round tyres we offer. This price includes the necessary mudguards. Please note all prices are in place of standard tyres.

    • 10 Stud Commercial Axles (406 x 120 S Cam)

      10 Stud Commercial Axles (406 x 120 S Cam)

      Part No.


      Ideal if the machine is frequently used on the road. Please note price is for a pair of axles in lieu of 8 stud axles.

    • 10 Stud Commercial Axles c/w ABS & Air Brakes

      10 Stud Commercial Axles c/w ABS & Air Brakes

      Part No.


      Ideal if the machine is frequently used on the road, and provides HGV levels of braking. Please note price is for a pair of axles in lieu of 8 stud axles and also includes the air brake option.

    • 10 Stud Commercial Axles (420 x 180 S Cam)

      10 Stud Commercial Axles (420 x 180 S Cam)

      Part No.


      Not recommended on this size of trailer; braking force generally too great for this size of trailer. Please note price is for a pair of axles in lieu of 8 stud axles.

    • Air/Oil Brakes c/w Load Sensing (Non ABS)

      Air/Oil Brakes c/w Load Sensing (Non ABS)

      Part No.

      Dealer Fit - 4hrs


      Ideal if the machine is frequently used on the road, provides improved braking for higher speeds. Automatic load sensing available on springs & manual load sensing available on rockers.

    • Oil Brakes Load Sensing System

      Oil Brakes Load Sensing System

      Part No.

      Dealer Fit - 2hrs


      This optional extra prevents the trailer wheels from locking up by reducing the flow of oil to the brake rams. Automatic load sensing available on springs & manual load sensing available on rockers.

    • Hydraulic Door Safety Valve

      Hydraulic Door Safety Valve

      Part No.

      Dealer Fit - 1.5hrs


      Ensures the hydraulic door of the trailer cannot be opened unless the trailer body is slightly tipped.

    • Rear Tow Hitch c/w Lights & Brakes

      Rear Tow Hitch c/w Lights & Brakes

      Part No.

      Dealer Fit - 2hrs


      Allows multiple machines to be moved around the farm at once.

    • Swivel Hitch

      Swivel Hitch

      Part No.


      Reduces wear on the tractor pick-up hitch.

    • Hitch Lock

      Hitch Lock

      Part No.

      Dealer Fit - 0.25hrs


      Allows the machine to be secured against theft. Padlock is not included.

    • Hydraulic Jack

      Image coming soon...

      Part No.


      For use on tractors without a pickup hitch.

    • Mudguards/Wings (QM,HD)

      Mudguards/Wings (QM,HD)

      Part No.


      Doubles the floor thickness above the wheels and reduces mud splatter to the rest of the machine.

    • Trailer Cover

      Trailer Cover

      Part No.

      Dealer Fit - 1hrs


      A simple 640g PVC cover to protect grain or other valuable loads.

    • Electric Cover

      Electric Cover

      Part No.


      This cover electrically deploys from the front of the trailer to the back to quickly cover and protect loads.

    • Hydraulic Cover

      Hydraulic Cover

      Part No.


      This cover hydraulically deploys from the front of the trailer to the back to quickly cover and protect loads.

    • Rear Ramps

      Rear Ramps

      Part No.

      Dealer Fit - 0.25hrs


      Manually attached ramps, ideal of unloading or loading machines.

    • Number Plate Bracket & Light

      Number Plate Bracket & Light

      Part No.

      Dealer Fit - 1hrs


      Allows your number plate to be easily changed.

    • LED Beacon

      LED Beacon

      Part No.

      Dealer Fit - 0.25hrs


      Ideal if the machine is frequently used on the road.

    • LED Worklights

      LED Worklights

      Part No.

      Dealer Fit - 2hrs


      These lights come in a pair and provide excellent illumination for working at night.

    • Bespoke Colour Finish - Single Colour

      Bespoke Colour Finish - Single Colour

      Part No.


      Your Marshall product can be painted in 13 bespoke colour finishes, including different blues, greens, yelllows, white, grey and black.

    • Rear Name Plate

      Rear Name Plate

      Part No.

      Dealer Fit - 1hrs


      Your Marshall product can have your name or farm name on the rear door.