The heart of cereal processing

Grinding using cylinders

The horizontal roller mill for grinding cereals into flour is a process that takes place thanks to horizontal grinding rollers in excellent quality centrifuged cast iron, dynamically balanced, with a high precision approach device and easily removable.

The attachment and detachment of the grinding cylinders and the related cleaning scrapers are operated by an electro-pneumatic system.

The specific design of the roller surface allows us to vary the processing of the material, thanks to our experience we can provide standard solutions or create customized processes.

Available models

Based on functionality, accessories and nominal processing capacity we have 2 different families available:

SL Family
SMM Family

Families

HORIZONTAL ROLLING MILL SL

Descrizione

The grinding roller mill, type SL, used for grinding soft wheat, durum wheat and barley, is completely automatic.

The load-bearing structure is composed of very thick steel shoulders with high mechanical resistance and an electro-welded central body that acts as a divider.

The transmission of motion to the grinding rollers occurs via toothed belts.

An electronic control system on all moving parts guarantees automatic stopping of the machine if necessary.

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Modelli

Model Dimension [mm] Weight [Kg] Volume [m3]
SL/1000 1899x1460x1858 3590 5
SL/1250 2149x1460x1858 4150 6
Air intake inlet available both on the RIGHT and LEFT on request.
Tanks for the accumulation of high pressure air with solenoid valves for automatic cleaning of the sleeves.
Convenient inspection hatch for access in case of maintenance of the filter bags.
Automatic system for extracting residues accumulated on the bottom via gear motor and star valve.
Rupture panel compliant with the ATEX standard for the discharge of any internal explosion.

SMM HORIZONTAL ROLL MILL

Air intake inlet available both on the RIGHT and LEFT on request.
Tanks for the accumulation of high pressure air with solenoid valves for automatic cleaning of the sleeves.
Convenient inspection hatch for access in case of maintenance of the filter bags.
Automatic system for extracting residues accumulated on the bottom via gear motor and star valve.
Rupture panel compliant with the ATEX standard for the discharge of any internal explosion.

Descrizione

The SMM type grinding roller mill, used for grinding soft wheat, durum wheat and barley, is available in two versions: semi-automatic and fully automatic.

The load-bearing structure is composed of very thick steel shoulders with high mechanical resistance and an electro-welded central body that acts as a divider.

In the semi-automatic version, the product at the entrance is distributed by feed rollers with variable speeds and by an overflow damper which acts as a production regulator.

The transmission of motion to the grinding rollers occurs via toothed belts.

An electronic control system on all moving parts guarantees automatic stopping of the machine if necessary.

The automatic model is equipped with a control system for continuously varying the revolutions of the feeding rollers. This system is managed by vertical capacitive probes which, placed on the entrance bell, allow digital control of the product level.

The SMM version is an optimization of the SL to make the machine more compact, lighter at the expense of a minimal variation on the maximum process flow rate.

Discover our fields of applications

Modelli

Model Dimension [mm] Weight [Kg] Volume [m3]
SMM/600 1260x1228x1645 2000 3
SMM/800 1460x1228x1645 2250 3
SMM/1000 1352x1228x1645 2643 3.4

Our grinding roller millers value

Eco Friendly

The materials used for construction are highly recyclable and thanks to the quality of the design the components subject to wear are minimal and indispensable.

Scalable

Three models with different lengths allow you to have a tailor-made solution based on the maximum processable flow rate.

Food Grade Material

All material in contact with the product being processed complies with FDA directives for food compatibility.

Focus on details

Over 60 years of continuous improvements to guarantee the best precision and quality of the finished product.

Safety

Thanks to the safety equipment and instruction manuals it is possible to operate while avoiding any source of injury.

Colors

Upon request we can provide a different color always respecting food and quality standards.

Complete regulation

Cleaning intervals can be adjusted according to specific need.

Automatic exctraction

The waste is conveyed and collected towards a rotary valve for automatic removal.

Product characteristics

Principle of operation

After the wheat grain has already been cleaned in the various steps inside the mill, the milling of the wheat begins, which can be divided into 3 phases:

1. Each grain is broken and the endosperm, i.e. the “body” of the grain, begins to be extracted.

2. The product of the “breaking” is sieved to separate the already finished flour from the intermediate products that require further processing.

3. The endosperm is ground to transform it into flour.

This process is carried out for a number of steps defined by the milling diagram, which is the representation of the flow of all the processes to which the various products are subjected within the mill; it can be carried out in its entirety, for example to produce “0” or “00” type flours, or carried out in part, as when extracting flours intended for particular uses, or wholemeal flours.

Target products

Wheat is the most commonly used grain in mill mills. The wheat is first ground into raw flour, which is then further refined to produce white flour. White flour is the type of flour most commonly used in the production of bread, pasta, biscuits and other baked goods.

Corn is another grain commonly used in mill mills. The corn is ground into cornmeal, which is then used to make products such as polenta, tortillas, and popcorn.

Rice is a cereal used mainly for the production of white rice. The rice is first ground into rice flour, which is then used to produce products such as puffed rice, crispy rice and sushi rice.

Barley is a cereal used mainly for the production of beer. The barley is first ground into barley flour, which is then used to make beer.

Oats are a cereal used mainly for the production of oat flakes. Oats are first ground into oat flour, which is then used to make oat flakes, cookies and other products.

Furthermore, other food products, such as legumes, fruits and vegetables, can also be used in mill laminators. For example, legumes can be ground to produce legume flour, which can be used to make products such as pasta, hummus and falafel. Fruits and vegetables can be ground to produce purees, which can be used to make products such as juices, jams and preserves.

Grinding angle

The horizontal roller mill for grinding cereals into flour has a specific demand in the manufacturing phase.

The shape of the iron with which the rows of the grinding rollers go to process the grain at B1 and the various products on the subsequent milling steps are the main reason for a high extraction of semolina and its quality.

For the same number of lines per centimeter, lines with a more acute and/or narrow angle are able to produce larger semolina granules compared to more obtuse and/or open angles.

For this reason, the scoring table with its parameters is an extremely important element.

The rifling angle is a fixed parameter that cannot be modified by the operator during grinding.

Various angle for roll machining

Grinding angle

This parameter, GAP/Distance, represents the only parameter that the milling technologist can provide to the mill operator in order to modify and/or improve the grinding yields and performance, as all the other parameters are fixed.

Steps Large products production > 600 um Medium products production < 600 um Fine products production < 355 um
Approx. opening Product Approx. opening Product Approx. opening Product
B1 0,50 mm 10-12% 0,50 mm 12-15% 0,45 mm 18-20%
B2 0,45 mm 25-30% 0,35 mm 32-35% 0,30 mm 42-45%
B3 0,35 mm 50-55% 0,25 mm 57-60% 0,25 mm 57-60%
B4 gr. 0,20 mm 0,20 mm 0,20 mm
B4 f. 0,20 mm 0,20 mm 0,15 mm
B5 gr. 0,18 mm 0,12 mm 0,10 mm
B5 f. 0,15 mm 0,12 mm 0,08 mm
B6 gr. 0,10 mm 0,08 mm
B6 f. 0,10 mm 0,05 mm
B7 f. 0,08 mm
D1 0,30 mm 0,25 mm 0,25 mm
D2 0,25 mm 0,25 mm 0,20 mm
D3 0,20 mm 0,20 mm 0,15 mm
D4 0,20 mm 0,20 mm
D5 0,20 mm 0,15 mm
D6 0,15 mm 0,10 mm
D7 0,10 mm
Red. 1 0,25 mm 0,25 mm
Red. 2 0,15 mm 0,20 mm
Red. 3 0,20 mm
Red. 4 0,20 mm
Red. 5
C1 0,05 mm 0,05 mm 0,05 mm
C2 0,05 mm 0,05 mm 0,05 mm
C3 0,05 mm
C4 0,05 mm

% sieved product of No.20TM (1110 um) 3 minutes of time.