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GBJ

GBJ

Product catalog summary

Document Overview

This technical catalog details the GBJ series high-pressure industrial fans, presented in multiple languages (Italian, English, French, German, Spanish). It covers specifications, applications, performance data, dimensions, terminology, and installation guidelines for various GBJ fan models and associated electric motors.

1. Specifications and Applications

The GBJ fans are designed for efficient suction of clean and dusty air with energy savings enabled by a special impeller featuring negative (overturned) blades. They are suitable for industries such as pneumatic conveying, cement, foundries, burners, mills, pasta production, chemical, siderurgical, and metallurgical sectors requiring low flow rates with medium to high pressures. The maximum fluid temperature allowed is 80°C.

Users are advised to consult the Technical Information booklet for detailed selection and supply data, and separate catalogs for optional components and electric motors.

2. Fan Models and Executions

The catalog identifies multiple GBJ fan executions (models) differing in configuration and size, including series such as GBJ F, GBJ H, GBJ I, and GBJ L. Each model is associated with specific performance and dimensional data.

3. Performance Characteristics

Detailed performance data is provided for both suction and delivery sides, including:

Volumetric flow rates (m³/min and m³/h)
Power consumption (kW)
Rotational speeds (RPM), typically around 2900-2950 RPM for 2-pole motors and ~1450 RPM for 4-pole motors
Noise levels (dBA) with a tolerance of +3 dBA
Total pressure (Pt) in kgf/m², convertible to Pascals (Pa) by multiplying by 9.807

Flow rate tolerance is ±5%. Performance tables show pressure decreasing as flow rate increases, with corresponding power and noise variations. Data is segmented by motor pole count and model.

4. Dimensions, Weights, and Mounting

Comprehensive dimensional tables specify parameters labeled A, B, C, E, F, G, H, H1, H2, K, L, M, N, P, Qa, Qp, and others, critical for installation and space planning. Weight data is calculated referencing the A14/A19 motor series.

Mounting details include the number and size of holes (nb, nfp) and screws (nfa). Shaft diameters and lengths, as well as moment of inertia values, are also provided.

5. Orientation and Installation Guidelines

The standard fan orientation is RD 270°, where the base-to-axis distance corresponds to dimension H. For other orientations, an Orientation Table correlates dimensions H, H1, and H2 to different rotations. Some GBJ series fans (e.g., GBJ H) are fixed orientation (non-adjustable), while others (e.g., GBJ I) allow orientation adjustment.

Correct orientation and mounting hole specifications are essential for proper installation and alignment.

6. Flange and Counterflange Specifications

Tables provide detailed dimensions for suction and delivery flanges, including diameters (D, D1, D2), flange thicknesses (a, b, a1, b1, a2, b2, t), and mounting hole details. Threaded screws follow ISO metric coarse pitch triangular profiles. Maximum diameters for screws projecting from the fan (Øva) and locking screws (Øvp) are specified.

7. Terminology, Symbols, and Standards

The document defines key fan components and terminology in multiple languages, including casing (V01), base (V05), impeller (V10), and motor (V20). Standardized symbols and units are used for flow rate (V), total pressure (pt), power (kW), rotational speed (RPM), and noise level (dBA).

Fan construction and testing comply with UNI ISO 13349:2002 and UNI 10531:1995 standards. Noise measurements follow UNI EN ISO 3740-3744-3746-13347, conducted in free field at 1.5 m distance under standardized air conditions (+15°C, 760 mmHg, specific weight 1.226 kg/m³).

8. Critical Parameters and Best Practices

Maximum fluid temperature for suction: 80°C
Flow rate tolerance: ±5%
Noise tolerance: +3 dBA
Use the special impeller design for enhanced efficiency and energy savings
Consult Technical Information and Accessories catalogs for comprehensive selection and optional components
Adhere to orientation tables and mounting specifications to ensure proper installation
Dimension C and weight values depend on the A14/A19 motor series; consult the Electric Motors Catalogue for precise motor data
Follow ISO metric coarse pitch threading standards for mounting screws
Consider noise measurements under standardized conditions for accurate assessment
Verify flange and counterflange compatibility during assembly

Summary

This multilingual technical catalog is a comprehensive resource for selecting, installing, and operating GBJ series high-pressure fans and associated electric motors. It provides detailed performance data, mechanical dimensions, orientation guidelines, and standardized terminology to support industrial applications requiring reliable, efficient air handling solutions. Proper consultation of orientation tables, adherence to mounting and motor specifications, and understanding of performance tolerances are critical for optimal fan operation and integration.

Catalog excerpts

Contents Table des matières Inhaltsverzeichnis Sumario ITALIANO • Edizione catalogo (mm/aaaa) • Per vericare se questa versione di catalogo è l'ultima disponibile, collegarsi con www.cimme.it, alle sezioni Prodotti o Download. ENGLISH • Catalogue edition (mm/yyyy) • Connect to www.cimme.it, sections Products or Download to check if this is the latest catalogue version. FRANÇAIS • Edition catalogue (mm/aaaa) • Pour vérier si cette version indiquée dans le catalogue est la dernière disponible, se connecter à www.cimme.it, aux sections Produits ou Téléchargement. DEUTSCHE • Ausgabe des Katalogs...

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Impiego ed Esecuzioni Use and Executions Emploi et Exécutions Anwendung und Ausführungen Uso y Ejecuciones Per l’aspirazione di aria pulita e polverosa. Questa serie di ventilatori ad alta pressione è caratterizzata da un elevato rendimento con risparmio di energia elettrica avendo installato una girante speciale a pale rovesce (negative). Vengono utilizzati per i trasporti pneumatici, nelle cementerie, nell’alimentazione dell’aria dei cubilotti nelle fonderie e nei bruciatori a nafta, nei mulini, nei pastici, nelle industrie chimiche, siderurgiche, metallurgiche ove siano richieste piccole portate...

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CD Aspetto e Campo di funzionamento □D Appearance and Range of operation [CilfimCl CED Aspect exterieur et Champ de fonctionnement CD Aspecto y Campo de funcionamiento

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Caratteristiche in Aspirazione Suction characteristics Caractéristiques en Aspiration Eigenschaften, saugseitig Características en Aspiración Tolleranza sulla Portata Flow rate tolerance Tolérance sur le Débit Toleranz auf den Fördermenge Tolerancia respecto al Caudal Tolleranza sulla Rumorosità Noise tolerance Tolérance sur le Bruit Toleranz auf den Geräuschpegel Tolerancia respecto a la Ruidosidad

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Suction characteristics Caractéristiques en Aspiration Eigenschaften, saugseitig Características en Aspiración

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Caratteristiche in Mandata Delivery characteristics Caractéristiques en Refoulement Eigenschaften, druckseitig Características en Impulsión Tolleranza sulla Portata Flow rate tolerance Tolérance sur le Débit Toleranz auf den Fördermenge Tolerancia respecto al Caudal Tolleranza sulla Rumorosità Noise tolerance Tolérance sur le Bruit Toleranz auf den Geräuschpegel Tolerancia respecto a la Ruidosidad

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Dimensioni d’ingombro e Pesi Overall dimensions and Weights Dimensions hors-tout et Poids Abmessungen und Gewichte Dimensiones del espacio ocupado y Pesos Il ventilatore è orientabile. The fan is adjustable. Le ventilateur est orientable. Der Ventilator ist einstellbar.

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Dimensioni d’ingombro e Pesi Overall dimensions and Weights Dimensions hors-tout et Poids Abmessungen und Gewichte Dimensiones del espacio ocupado y Pesos Tabella orientamenti Orientation table Tableau des orientations Tabelle der Einstellungen Tabla de orientaciones L’orientamento rafgurato a sinistra è RD 270 e la sua distanza tra la base e l’asse corrisponde alla dimensione H in tabella. Per altre rotazioni consultare la Tabella orientamenti che fornisce la corrispondenza con le dimensioni H, H1 o H2. La dimensione C ed il Peso indicati in tabella sono calcolati con il motore della serie A14/A19...

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Dimensioni d’ingombro e Pesi Overall dimensions and Weights Dimensions hors-tout et Poids Abmessungen und Gewichte Dimensiones del espacio ocupado y Pesos Il ventilatore non è orientabile. The fan is not adjustable. Le ventilateur n’est pas orientable. Der Ventilator ist nicht einstellbar.

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Note Notes Remarques Hinweise Notas

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CD Aspetto e Campo di funzionamento □D Appearance and Range of operation ClmiflCl CE Aspect exterieur et Champ de fonctionnement CD Aspecto y Campo de funcionamiento

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Tolleranza sulla Portata Flow rate tolerance Tolérance sur le Débit Toleranz auf den Fördermenge Tolerancia respecto al Caudal Caratteristiche in Aspirazione Suction characteristics Caractéristiques en Aspiration Eigenschaften, saugseitig Características en Aspiración Tolleranza sulla Rumorosità Noise tolerance Tolérance sur le Bruit Toleranz auf den Geräuschpegel Tolerancia respecto a la Ruidosidad

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Suction characteristics Caractéristiques en Aspiration Eigenschaften, saugseitig Características en Aspiración

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Tolleranza sulla Portata Flow rate tolerance Tolérance sur le Débit Toleranz auf den Fördermenge Tolerancia respecto al Caudal Caratteristiche in Mandata Delivery characteristics Caractéristiques en Refoulement Eigenschaften, druckseitig Características en Impulsión Tolleranza sulla Rumorosità Noise tolerance Tolérance sur le Bruit Toleranz auf den Geräuschpegel Tolerancia respecto a la Ruidosidad

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