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Atex Gearboxes Catalogue

Atex Gearboxes Catalogue
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Atex Gearboxes Catalogue

Product catalog summary
Proper Use
The gearboxes are designed for Group II, zones 1 and 2, with operating temperature classes of T4 for gas atmospheres and 108°C for dust atmospheres. They must be mounted horizontally with splash lubrication only, and no auxiliary systems are allowed. The input speed should not exceed 1500 rpm, and ambient temperatures should range from -20°C to +40°C. Installation and maintenance guidelines are provided in the manual, which must be accessible to personnel.
Data Needed for Gearbox Selection
A checklist is recommended for selecting the correct gearbox, considering factors like potentially explosive atmospheres, operating zones, and maximum surface temperatures.
Identification Plate
Each gearbox has an identification plate with technical data and a Declaration of Conformity, which must remain intact and visible.
Technical Definitions
Key terms include Gear Ratio (ieff), Output Torque (T2), Maximum Torque (T2max), Nominal Torque (TN), Output Power (P2), and Thermal Power (PT), each defining specific operational parameters of the gearbox.
Selecting the Right Gearbox
Selection involves considering applied power, mechanical power absorbed, and maximum permitted powers. The application factor (KA) is crucial for determining the correct gearbox based on the type of drive motor and driven machine.
Industrial Applications and Equipment
The document outlines various industrial applications and equipment, such as coilers, uncoilers, cereal cookers, dough mixers, and meat grinders, associated with sectors like the food industry, cement processing, and textile industry.
Gearbox Selection Example
An example is provided for selecting a gearbox for a conveyor belt application, detailing parameters like motor power, required torque, maximum starting torque, and gear ratio, demonstrating the calculation of required torque and verification of the gearbox's capability.
Input-Output Configurations
Input configurations are designed for IEC electric motors, while output configurations include mounting flanges and central shafts supported by ball bearings. Flange and key dimensions vary based on gearbox size.
Technical Specifications and Dimension Tables
Detailed specifications and dimension tables are provided for various gearbox sizes, including torque capacities, power ratings, and operational life, assisting in selecting the appropriate gearbox size based on application requirements.
CS Factor and Application Factor
The CS factor accounts for the number of starts per hour, and the application factor KA is used in calculating the required torque for gearbox selection.
Specifications
The document provides detailed specifications for various gearbox models, including power, torque, and rotational speed for different configurations, identified by unique codes.
Procedures
The gearboxes are finished with a blue synthetic epoxy primer to prevent electrostatic charge build-up, and repainting is forbidden to avoid exceeding the maximum paint thickness.
Standards and Recommendations
The standard paint finish is suitable for normal industrial environments. Special paint finishes must be specified at the time of order. Machined external parts are coated with a protective antioxidant lubricant, and gearboxes are delivered without oil unless specified otherwise.
Key Data from Tables
The tables provide comprehensive data on gearbox performance, including input and output speeds, power, and torque for various models, crucial for selecting the appropriate gearbox based on operational requirements.
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Catalog excerpts

Atex Gearboxes Catalogue-1

ETARY PARTNER >PLANETARY PARTNER >PLANETARY PART N E

 Open the catalog to page 1
Atex Gearboxes Catalogue-3

1.1. LE DIRETTIVE ATEX Some manufacturing processes occur in the presence of gas or dust that under certain conditions can explode or spontaneously combust, causing serious injury and damage. Since it is impossible, under most circumstances, to isolate manufacturing equipment from such potentially explosive atmospheres, years ago national standards were introduced to regulate the manufacturing environment and the manufacturing equipment itself in an attempt to limit any risk of explosion. The need to establish uniform standards throughout the European Union has now led to the definition and publication...

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Atex Gearboxes Catalogue-4

Zone Le zone definiscono la probabilità che ha l’apparecchio di trovarsi in presenza di una atmosfera potenzialmente esplosiva. Le zone sono tre (anche se raddoppiano, come definizione, in funzione del tipo di atmosfera): • zona 0 o 20: funzionamento in presenza costante di atmosfera potenzialmente esplosiva tipo G o D. • Zona 1 o 21: funzionamento in presenza occasionale (ma legata alle condizioni operative normali) di atmosfera potenzialmente esplosiva tipo G o D. • Zona 2 o 22: funzionamento in presenza occasionale e rara (non legata alle condizioni operative normali) di atmosfera potenzialmente...

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Atex Gearboxes Catalogue-5

- Guide to the implementation of directives based on the New Ap- Guida alla implementazione delle direttive fondate sul Nuovo Approccio e Approccio Globale (pdf inglese) proach and the Global Approach (pdf format in English) - Introduzione ATEX n.1 (html inglese) - Introduction to ATEX No.1 (html format in English) - Introduzione ATEX n.2 (html inglese) - Introduction to ATEX No.2 (html format in English) - Direttiva 95/4/CE concernente il ravvicinamento delle legislazioni degli Stati membri relative agli apparecchi e sistemi di protezione destinati ad essere utilizzati in atmosfera potenzialmente...

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Atex Gearboxes Catalogue-6

Configurazione entrata Input configuration Mounting position

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Atex Gearboxes Catalogue-7

1) I riduttori nel seguente catalogo appartengono eclusivamente al Gruppo II, zone 1 e 2 (caselle grigie della tabella a pag.3). 1) The gearboxes in this catalogue belong exclusively to Group II, zones 1 and 2 (cells shaded in grey in the table on page 3). 2) La temperatura di funzionamento deve appartenere alle seguenti classi: • T4 nell’ambiente GAS. Ovvero, la temperatura superficiale esterna nel punto più caldo non deve superare 108 °C corrispondenti all’ 80% di 135 °C. • 108 °C nell’ambiente POLVERI. 2) Operating temperature must be in the following classes • T4 in GAS atmospheres. This...

 Open the catalog to page 7
Atex Gearboxes Catalogue-8

Ogni riduttore è dotato di Targhetta di Identificazione e di una Dichiarazione di Conformità (secondo Allegato VIII) ai sensi della direttiva 94/9/CE. La Targhetta di Identificazione contiene le principali informazioni tecniche relative alle caratteristiche funzionali e costruttive del riduttore; deve perciò essere mantenuta integra e visibile. Every gearbox is fitted with an identification plate and comes complete with a Declaration of Conformity (according to Appendix VIII) in conformity to Directive 94/9/CE. The identification plate provides essential technical data on the gearbox’ functional...

 Open the catalog to page 8
Atex Gearboxes Catalogue-9

Rapporto di riduzione ieff. Rappresenta la relazione fra la velocità in ingresso n1 ed uscita del riduttore n2. La modularità della gamma proposta da Brevini Riduttori permette la disponibilità di altri rapporti oltre a quelli indicati: consultare Brevini Riduttori per la eventuale disponibilità di ulteriori rapporti. Gear ratio ieff This is the effective ratio between gearbox input speed n1 and output speed n2. The modular composition of Brevini Riduttori’s gearbox range permits customers to specify ratios other than those shown. Contact Brevini Riduttori’s Technical Service for information...

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Atex Gearboxes Catalogue-10

3.1. SELECTING THE RIGHT GEARBOX Per eseguire una corretta selezione del riduttore, occorre confrontare le seguenti grandezze: 1) potenza applicata al riduttore (fornita dal motore primo); 2) potenza meccanica assorbita dall’applicazione (da calcolare. Vedere anche l’esempio seguente); 3) potenza meccanica ammissibile (valore P2 a catalogo); 4) potenza termica massima (valore PT a catalogo). The following values must be taken into consideration in order to choose the right gearbox for your needs: 1) power applied to the gearbox (by the drive motor); 2) mechanical power absorbed by the application...

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Atex Gearboxes Catalogue-11

Fattore di applicazione KA / Application factor KA MACCHINA COMANDATA DRIVEN MACHINE Agitatori/Mescolatori Agitators/Mixer Sostanze liquide Pure liquids MACCHINA COMANDATA DRIVEN MACHINE Trituratotri Crusher Sostanze semi-liquide Liquids and solids Liquido non omogeneo Liquid-variable density Pietre e metalli Stone or ore Ciclo continuo Heavy duty Ciclo intermittente Medium duty Avvolgicavo Cable reel Sollevamento cassonetto Skip hoists Macchine di lavaggio Laundry Testa portafresa Cutter head drives Macchina per mattonelle Briquette machine Convogliatori Conveyors-general pourpose Bottali Tumblers...

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Atex Gearboxes Catalogue-12

Fattore di applicazione KA / Application factor KA MACCHINA COMANDATA DRIVEN MACHINE Tranciatrici Shears MACCHINA COMANDATA DRIVEN MACHINE Lavorazione cemento Mills rotary type Forno per cemento Cement Kilns Essicatoi Dryers & coolers Mescolatori Mixer concrete Lavorazione carta Paper mills MACCHINA COMANDATA DRIVEN MACHINE Lavorazione zucchero Sugar industry (motore in corrente cont.) (DC motor) Ispessitrice (motore in a.c.) Thickener (AC motor) Affettatrice barbabietole Beet slicer Frantoi per canna Cane knives Trituratori Crushers Macinatori Mills (low speed end) Lavatrice (motore in c.a.)...

 Open the catalog to page 12
Atex Gearboxes Catalogue-13

3.2. ESEMPIO SELEZIONE RIDUTTORE 3.2. SELECTING THE RIGHT GEARBOX: EXAMPLE Motore primo: Elettrico. Potenza:10 kW a 1500 rpm Drive motor: Electric. Power 10 kW at 1500 rpm Macchina azionata: Nastro trasportatore non uniformemente alimentato Numero di avviamenti all’ora: 1 Coppia richiesta di funzionamento: 3000 Nm Coppia massima all’avviamento: 6000 Nm Velocità di rotazione: 30 rpm Vita richiesta per la trasmissione: 10000 h Posizione di funzionamento: orizzontale Temperatura ambiente: 30°C Driven machine: Not uniform fed conveyor belt Number of starts per hour: 1 Torque required for operation:...

 Open the catalog to page 13

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.