The fat adder enriches feed that requires a high percentage of fat, such as poultry feed, without compromising the compactness of the final product. The cycle starts after sieving the pellet, which makes it homogeneous, well-filled and dry, with a percentage of fat ranging from 7 to 11%


    The fat adder enriches feed that requires a high percentage of fat, such as poultry feed, without compromising the compactness of the final product. The cycle starts after sieving the pellet, which makes it homogeneous, well-filled and dry, with a fat percentage ranging from 7 to 11%.

    Some time ago, to add fat, you needed a drum machine in the shape of a double half of a cone. The pellet flowed in continuously from one end, sprayed with hot oil and exited from the other end where the screening net was. The product, however, was of poor quality, because the oil did not penetrate into the core of the pellet and, remaining on the surface, turned out to be wet and not homogeneous. To overcome this problem, the product was dried and cooled before packaging.

    In latest generation fat adding machines, such as those operated by vacuum, hot fat is introduced while the pellet is being agitated by the shaft blades. At this stage, a vacuum is created inside the device. Gradual opening of the atmospheric pressure valve after an appropriate production cycle and mixing time to obtain a homogeneous product, allows the fat to penetrate directly into the core of the pellet, which results in a dry and excellent quality.

     A good compromise between the cost of the product and the cost of the equipment is a device with a continuous cycle of adding cold fat. It uses 2 heated screw feeders and thanks to the very precise flow control it provides the right balance between the amount of fat and the compactness of the pellet. 



    1. Pellet flows through the hopper;

    2. Enters the extraction auger. Its speed is set by an inverter that controls the performance according to the set level on the volume sensors;

    3. The flow is continuously weighed by the weighing container. This electronic device measures the force applied to an object (usually a mechanical component) by monitoring an electrical signal modified by the deformation that the force exerts on the component;

    4. Grease is sprayed onto the pellets by a spray chamber connected to a 600 liter tank. The process is controlled by a dosing pump and a flow meter that sets the oil addition according to the pellet flow. Fat is mainly made from industrial animal waste (chicken fat);

    5. The pellet passes through two screw feeders. The duration of the production cycle is sufficient for the oil to uniformly penetrate into the core of the pellet thanks to the rotation and the blades. heating is achieved by means of electric plates that are in contact with the outer shell of the screws (70-80 °C) of the pipes;

    6. The device releases the product ready for packaging



    Models available:

    ● LOP-F 10: motor 3 kW, feed screw diameter 300 mm, length 10 m. 5.5 kW capacity 10 t/h

    ● LOP-F 20: motor 3 kW, feed screw diameter 300 mm, length 14 m. 5.5 kW capacity 20 t/h

    ● LOP-F 10: motor 4 kW, feed screw diameter 350 mm, length 20 m. 7.5 kW capacity 30 t/h


    The painted steel dosing system consists of:

    ● bunker 1.5 m3

    ● volume sensor: sets the flow according to the set level

    ● Extraction auger, variable volume with motor with built-in inverter, 3 kW.


    Painted steel screw feeder consists of:

    ● Diameter 300 mm.

    ● 10 m length for LOP-F model and over 10 t/h capacity

    ● Predisposition to heat resistance.

    ● motor 5.5 kW



         Heating the screw facilitates the absorption of fat and oil, and the screw itself is kept clean.

            For model LOP-F 20, the screw feeder is 14 m long and 300 mm in diameter.

            For model LOP-F 30, the screw feeder is 20 m long and 350 mm in diameter.


    The liquid dosing system consists of:

    ● Liquid tank AISI 304, capacity 600l., intended for steam heating

    ● Valves and nozzles for liquid separation, air injection, post-process cleaning

    ● Positive displacement pump

    ● Mass volume sensor with 4-20mA. Signal proportional to product flow

    ● Ventilated servomotor, 1.5 kW


    The spray chamber made of AISI 304 consists of:

    ● Grease spray nozzles

    ● Compressed air ports for low pressure liquid spraying 0.5 bar


    — Options

    Electronic control panel for liquid dosing and for system motors.


Model Inner diameter (mm) total length (mm) Output based on 4 min of retention time (T/h) Output based on 2min of retention time (T/h)    
SNF600.4500-EH 600 4500 8 15    
SFN800.5000-EH 800 5000 15 30    
SFN1100.5000-EH 1100 5000 30 60    


The rollers are adjusted by a hydraulic piston driven by a hydraulic device located outside the machine and controlled from the control panel.

The position of the rollers is calculated by means of an angular potentiometer mounted behind the rollers (inside the main shaft). The potentiometer signals the angular position of the roller pins. By operating the entire system from the control panel, the distance between the rollers and the die can be calculated using the signal transmitted by the potentiometer.

At the electronic panel, the operator chooses the roller position. The panel pressurizes the hydraulic circuit and moves the piston until the rollers reach the desired position.

From the electrical panel, the operator determines the position of the rollers by applying pressure to the hydraulic system and moving the piston until the rollers reach the desired position. Once the desired position has been reached, the system is locked and held in position by two valves.

The maximum pressure reached by the hydraulic system is 250 bar, and the required pressure for moving the piston and adjusting the rollers is 150 bar.

The adjustment is done quite quickly: you can move the rollers closer or further away from the matrix by 7-8 mm, in each direction in about 15 seconds.

For more information, watch the following video: Automatic Rollers Adjustment (WAP System)

rapid bloc quick device for change dies.jpgrapid bloc quick device for change dies-2.jpg

The device allows replacing the matrix in 10-20 minutes, depending on its size. The system includes a tapered stainless steel ring that is closed and held in place by Belleville disc springs.

This ring locks the die in place. The matrix is released by pressure on the hydraulic system, which pushes the springs to release the elastic ring.

For more information, watch the following video: Rapid Block System

hydraulic push off devices.jpg

The system consists of a hand pump and a piston, which are needed to dismantle the die.

The piston is installed between the rotor and the reinforcement flange so as to push the die out of its seat.


automatic lubrication system.jpg automatic lubrication system2.jpg

This system includes a high viscosity grease pump.

It is equipped with blades to break up possible air bubbles. The system is connected to the press via a rotary distributor connected directly to the main shaft.

Lubrication is controlled by an electrical panel that is included in the delivery. The panel allows you to measure the required amount of grease using two timers to regulate the time for applying grease and pause.


The pump has the following characteristics:

● the flow is adjustable from 2.9 to 17 cc / min.

● motor 0.185 kW, 400V, 50Hz

● steel tank for 10 kg

● filter

● pressure relief valve

● pressure gauge

● indicator of minimum lubricant level

● progressive dispenser for distributing grease at two points

● inductive PNP sensor for cycle monitoring

● control valves for 1/8 outlet