RD

RD
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RD

Product catalog summary
Overview: The Varvel Group specializes in power transmission systems, offering a range of standard and customized solutions. With over 60 years of experience, their products are designed and manufactured in Italy, supported by subsidiaries in the USA and India, and a network of over 100 partners globally.
Certifications and Standards: Varvel's management system is certified under UNI EN ISO 9001:2015, UNI EN ISO 14001:2015, and BS OHSAS 18001:2007. Their products comply with the EC Directive 2014/34/EC (ATEX) for use in potentially explosive atmospheres.
Product Specifications: The RD series gearboxes feature a one-piece cast housing with 2 or 3 gear stages, designed according to ISO standards. They are available in B3 foot-mounted configuration and can be converted to flange mounting. The gearboxes use pressure die-cast aluminum or grey cast iron for housing, with alloy steel gears that are case-hardened and ground.
Technical Features: Gearboxes include NBR oil seals as standard, with Viton and Silicone available on request. Bearings are either ball or roller types, depending on size and technical requirements. The RD series includes 7 sizes, 28 ratios in 2 and 3 stages, with a maximum output torque of 2300 Nm.
ATEX Compliance: Varvel-ATEX gearboxes are designed for explosive atmospheres, compliant with Directive 94/9/CE, suitable for Group II zones, Category 2 or 3, with explosion hazards from gas or combustible dust.
Specifications: Gear motors and gearboxes have a power range from 0.06 kW to 22 kW and a speed range from 600 rpm to 2.2 rpm. Motor flanges are compatible with IEC 56 to IEC 180 and NEMA 56C to NEMA 210TC standards. Output torque ranges from 27 Nm to 2300 Nm, with reduction ratios from 2.25:1 to 630:1.
Procedures: Detailed tables assist in selecting speed reducers based on output speed, torque, and power. Information on reduction stages and drive coupling types is included.
Thermal Power: Rated power is defined for continuous operation with a maximum ambient temperature of 40°C and altitude of 1000 m. Thermal power can limit rated power based on cooling systems, input speed, ambient temperature, and service factor.
Lubrication and Weights: Lubrication requirements and weights of different gearbox models are specified.
Two-Stage and Three-Stage Gearboxes: Both types include motor flange adapters, input covers with gears, housing with additional gears, and output flanges, allowing for input/output rotation.
Electric Motor Standards: Insulation classes, voltage and frequency combinations, and altitude and temperature factors are specified for normal and heavy-duty operations.
ATEX Directive 94/9/EC: Applies to machines and components in explosive environments within the EU. VARVEL-ATEX gearboxes are manufactured with metallic housings, FKM oil seals, and sealed screws, essential for operation in explosive environments.
Conformity and Certification: VARVEL gearboxes comply with ATEX Directive 2014/34/EU and relevant EN standards, marked with II 2 GD ck IP66, Tmax=135°C, and operational temperature range of -20 to +55°C.
Operation and Maintenance Instructions: Ensure compatibility and stability to prevent vibrations or overloads. Gearboxes can rotate in both directions; stop immediately if defects or unusual noise occur. Use synthetic oil and avoid mixing with mineral oil. Protect seals and surfaces during repainting and apply anti-corrosion measures for long-term storage.
Product Environmental Management: Disposal recommendations align with ISO 14001 certification. Scrapped components should be delivered to authorized centers, oils to Exhausted Oil Unions, and packaging materials recycled.
Compliance with Machine Directive 2006/42/EC: Speed gearboxes and variators are separate machine elements meant for incorporation into machines, requiring compliance with safety and health requirements of the directive.
Installation Guidelines: Ensure correct selection and mounting as per the order. Stability is crucial to avoid vibrations or overloads.
Operational Instructions: The unit can rotate in both directions. Stop immediately if defective running or unexpected noise occurs to prevent further damage.
Maintenance Recommendations: Units are tested before dispatch but should not be run at maximum load for the first 20-30 hours. Use only synthetic oil for gearboxes.
Handling and Storage: Use appropriate lifting points and protect moving parts during hoisting. For long-term storage, apply anti-oxidants and protective grease.
Company Information: VARVEL SpA has subsidiaries in India and the USA, with a global network of over 100 partners and more than 60 years of history.
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Catalog excerpts

RD-1

CATALOGO RD RD CATALOGUE RD-KATALOG

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RD-2

L’esperienza al servizio dell’innovazione Dal 1955 il Gruppo Varvel progetta e realizza sistemi di trasmissione di potenza impiegati in numerosi settori dell’industria. “Know-how to do it”: Varvel ha le competenze per soddisfare al meglio le richieste dei clienti. Grazie alla grande esperienza maturata in oltre sessant’anni, Varvel offre alla clientela un’ampia gamma di soluzioni standard e prodotti personalizzati per esigenze specifiche. L’intera gamma di prodotti Varvel è progettata e realizzata in Italia, ma il Gruppo è presente in tutto il mondo con due filiali (una in USA e l’altra in India)...

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RD-3

RD RIDUTTORI AD INGRANAGGI due e tre coppie di ingranaggi cilindrici versioni con piedi. flangia e piedi/flangia HELICAL GEARBOXES two and three gear stages foot-, flange- and foot/flange-version STIRNRADGETRIEBE Zwei- u. Dreistufig Fuß-, Flansch- u. Fuß/Flansch-ausführung Selection tables Informazioni generali General information Allgemeine Informationen

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RD-4

RD Riduttori - Gearboxes - Getriebe Descrizione - Description - Beschreibung La serie dei riduttori a ingranaggi tipo RD, costruita con carcassa fusa in unico pezzo e con supporto interno per alloggiare 2 o 3 coppie di ingranaggi, è costruita secondo le norme di progettazione ISO e con l’ausilio di programma di analisi strutturale per verifica della deformata e dello stress. La struttura monolitica della carcassa non subisce deformazioni significative sotto effetto della coppia di funzionamento e dei carichi esterni con positivi risultati sulle superfici di tenuta. I riduttori serie RD sono costruiti...

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RD-5

Getriebe - Gearboxes - Riduttori RD Beschreibung -I Description - Descrizione Riduttori ad ingranaggi cilindrici Helical gearboxes Multipurpose Housing Foot & Foot/Flange mountings One housing for 2- & 3-stages Carcassa multiuso Montaggio con Piedi e Piedi/Flangia Unica carcassa per 2 o 3 coppie Mehrzweckgehause Montage mit FuG und FuG/Flansch einheitliches Gehause fur 2-3 Stufen Carcasse e Coperchi Alluminio in pressofusione (5 grandezze) Ghisa (2 grandezze) Housing & Covers Pressure die cast aluminium (5 sizes) Grey cast iron (2sizes). Gehause u. Deckeln Aluminium-DruckguG (5 GroGen) GrauguG...

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RD-8

RD Riduttori - Gearboxes - Getriebe Sistema modulare - Modular System - Modularsystem

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RD-9

Getriebe - Gearboxes - Riduttori RD Modularsystem - Modular System - Sistema modulare

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RD-10

RD Riduttori - Gearboxes - GetriebeDescrizione Giunto G - Coupling GlDescription - Kupplung G Beschreibung A) Semi-giunto riduttore - Materiale: acciaio - Integrale con albero entrata - Supportato con due cuscinetti - Dimensioni lato entrata invariate B) Anello elastico - Denti: collegati esternamente - Materiale: Elastomero Termoplastico IXEF® - Polyarylamide - Durezza 90 Shore D - Temperatura -30/+135° C(-22/+275°F) A) Reducer-side coupling hub - Material: steel - One piece machined on input shaft - Two bearing setting - Unchanged casing dimensions B) Spider - External tooth connection - Material:...

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RD-11

Getriebe - Gearboxes - Riduttori RDKupplung G Auswahl - Coupling G Selection - Selezione Giunto G Tipo Type Typ Mt - Coppia di serraggio vite Mt1 - Coppia trasmissibile con chiavetta Mt2 - Coppia trasmissibile senza chiavetta * - Giunto GS8: serraggio con chiavetta e grano di bloccaggio assiale ../X - Codice giunto con elemento elastico nero IXEF Nota - Nessun ID# marcato sul Giunto GS8 Mt - Screw locking torque Mti - Transmissible torque with key Mt2 - Transmissible torque without key * - Coupling GS8: steel, key fit and grub screw ../X - Code of coupling with IXEF black-spider Note -...

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RD-12

RD Riduttori - Gearboxes - GetriebeFlange IEC e Giunto -I IEC Flanges & Coupling - lEC-Flansche u. Kupplung Tipo Riduttore Gearbox Size Getriebestyp * - Giunto GS8: montaggio con chiavetta e grano di bloccaggio assiale ../X - Codice del giunto con anello nero IXEF * - Coupling GS8: key fitting and axial locking grub screw ../X - Code of coupling with IXEF black-spider u. gewindestift ../X - Kupplungscode mit schwarzen IXEF-Ring

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RD-13

Getriebe - Gearboxes - Riduttori RDNEMA-Flansche u. Kupplungl- NEMA Flanges & Coupling - Flange NEMA e Giunto Tipo Riduttore Gearbox Type Getriebetyp - Giunto GS8: serraggio con chiavetta e grano di bloccaggio assiale - Codice del giunto con anello nero IXEF * - Coupling GS8: key fitting and axial locking grub screw ../X - Code of coupling with IXEF black-spider windestift ../X - Kupplungscode mit schwarzen IXEF-Ring

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RD-14

RD Riduttori - Gearboxes - GetriebeDesignazione Riduttore e Motorel- Gearbox & Motor Designation - Getriebe- u. Motorbezeichnungen DESIGNAZIONE DEL RIDUTTORE - GEARBOX DESIGNATION - GETRIEBEBEZEICHNUNG Flangia uscita 0 - Output flange - Ausangsflansch Albero uscita 0 - Output shaft 0 - Ausgangswelle 0 Forma del motore - Motor form - Motorbauform Grandezza del motore elettrico - Electric motor frame - Motorbaugrosse Rapporto di riduzione - Reduction ratio - Getriebeubersetzung Posizione di montaggio del riduttore - Gearbox mounting position - Einbaulage des Getriebes Forma costruttiva del riduttore...

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RD-15

Getriebe - Gearboxes - Riduttori RD Elektronischer Katalog - Guided Selection - Configurazione assistita VARsize Modularità e la flessibilità hanno guidato il progetto dei prodotti VARVEL fino dagli anni 2000: così, la disponibilità di riduttori in kit ha permesso il montaggio in pochi minuti utilizzando una normale attrezzatura. Questo permette la massima flessibilità ai distributori e rivenditori VARVEL che, grazie ad un numero limitato di elementi, possono configurare all'istante il prodotto richiesto dai clienti. Il programma di selezione VARsize® disponibile nel sito web www.varvel.com permette...

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RD-16

RD Riduttori - Gearboxes - Getriebe Posizioni di montaggio - Mounting positions - Einbaulagen - due e tre coppie - two and three stages - Zwei- u. Dreistufig Montaggio a piedi Foot mounting Fußbauformen Montaggio a flangia Flange mounting Flanschbauformen

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All VARVEL catalogs and technical brochures

  1. RG 2025

    2  Pages

  2. RD 2025

    2  Pages

  3. G/GS

    2  Pages

  4. XA series

    8  Pages

  5. RN series

    92  Pages

  6. VS series

    16  Pages

  7. VR catalogue

    20  Pages

  8. RD catalogue

    64  Pages

  9. RG

    2  Pages

  10. RO-RV

    96  Pages

  11. RN

    92  Pages

  12. RS-RT

    72  Pages

  13. VR

    20  Pages

  14. VS

    16  Pages

  15. Product Range

    8  Pages

  16. XA

    8  Pages

  17. ATEX Manual

    36  Pages

  18. Catalog RO2

    64  Pages

  19. RC

    44  Pages

  20. ISM-BSM

    12  Pages

  21. Company Profile

    28  Pages

  22. RG Catalogue

    28  Pages

  23. ISM/BSM

    2  Pages

  24. FRP680

    2  Pages

  25. RO2

    2  Pages

  26. RO/RV

    2  Pages

Archived catalogs

  1. ISM/BSM 2021

    12  Pages

  2. RS/RT

    2  Pages

  3. G/GS series

    4  Pages

*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.