Overlapping Chain and Flap Design Promotes gripping of product for efficient unloading. Trailers empty very quickly and safely, producing a compact pile. Our steel “EagleBar” crossbars are patent pending and lead the industry in strength vs. weight. Aluminum bars available.	Overlapping Chain and Flap Grips and gently unloads any product. Won't slip in muddy or sloppy conditions like one piece conveyor belts.	Plastic Lining Our low friction plastic liner makes unloading even quicker and easier. This liner consists of High Molecular Weight (HMW) plastic on the side slopes and Ultra High Molecular Weight (UHMW) plastic on the trailer bottom. These high-quality liners ensure long life and are especially useful in colder climates, as well as and when the payload is somewhat adhesive. They also provide an extremely protective, abrasive-resistant surface.
PTO Unload Pressure and return hydraulic hoses are installed to the front of the trailer with quick couplers. A variable speed adjustable flow control valve with gauge allows for easy unloading.	Electric Unload System A 5-h.p. or 7.5-h.p., single-phase, 220-volt electric motor is directly coupled to a hydraulic pump. A three-phase electric motor is optional.	Gasoline Unload System We utilize an extremely reliable, long life, 20-h.p., electric start gas engine directly coupled to a hydraulic pump.

The unloading system is capable of handling up to 35 tons of product. At each end of the body, there are shaft mounts that are welded to the body.  Bearings are mounted to the front shaft mounts and the front shaft is installed into the bearings.  A lock collar and set screws on the bearings keep the front shaft from moving side to side.  The front shaft assembly slides on the shaft mounts forward or rearward to tighten or loosen the conveyor as needed for proper tension on the conveyor.  Sprockets are welded onto the front and rear shafts and helps guide the chain and flap assembly as it pulls the load to the rear of the body for unloading. They then travel under the body to begin another continuous loop.

The rear shaft is inserted into a speed reducing planetary gearbox.  This assembly is then bolted to the rear shaft mounts.  The shaft is kept from moving from side to side by a lock collar and set screws on the bearing.  The speed reducer is a heavy-duty gearbox that amplifies the rotating force supplied by the hydraulic motor, which is bolted to the speed reducer.  The speed reducer supplies the substantial amount of torque necessary to move a conveyor loaded with up to 35 tons of product and to discharge the load out the rear of the body.  Hydraulic power is supplied by an electric motor and/or gas motor driving a hydraulic pump mounted on the side of the body and/or a PTO driving a hydraulic pump on the truck.  The operator controls the speed at which the conveyor moves, which speed ranges from 0 ft/min to 40 ft/min. The conveyor controls are located on the sloped sidewall of the body.

Plastic lining is bolted to the floor and sidewalls of the body.  Two or three (depending on application) high tensile-strength steel pintle chains are then placed parallel to each other on top of the plastic floor liner.  These chains run the length of the body and are connected to each other by crossbars constructed of steel channel, steel tubing or aluminum.  The chains, which are guided by the sprockets in the front and rear of the trailer body, loop under the body to create a continuous conveyor.  Attached to the crossbars on the leading edge are overlapping flaps made of tough, flexible pieces of conveyor belting.  They overlap each other to make a continuous segmented conveyor.  The length of the crossbars (distance between the chains) depends on the desired width of the belt.  The trailer bodies are manufactured in six belt sizes: 25”, 31”, 36”, 41”, 48”, and 61”.

The product is moved to the rear of the trailer body and unloaded through the door opening.  A variety of door options accommodate metered and unmetered unloading and many are capable of opening fully to unload the product.  An AG Bag attachment is offered and designed for products such as distillers mash, a feed product that cannot be exposed to air for prolonged periods of time.  The AG Bag attachment enables the distillers mash to be unloaded directly into bags for storage.  Another option, the grain transition funnel, enables grain to be unloaded directly into augers.