1. Catalogs
  2. Rexnord Industries, LLC
  3. Viva? Coupling Catalog
video corpo

Viva? Coupling Catalog

Viva? Coupling Catalog
1 / 20 PagesView full catalog

Viva? Coupling Catalog

Product catalog summary
Overview
The document details the Rex Viva coupling, an advanced version of the Rex Omega, designed for higher torque transmission with a compact size and larger bore accommodation. It is a non-lubricated, torsionally flexible coupling consisting of four main components: two axially-split half flexible elements with capscrews and two hubs. It complies with ISO, DIN, and ANSI specifications for shaft spacing up to 300 mm without additional parts.

Specifications
  • Two-Piece Flex Element: Facilitates easy replacement without disturbing hubs or connected equipment, featuring a polyurethane membrane bonded to steel shoes for torque transmission in shear.
  • Material: Polyurethane resists cyclic fatigue and industrial chemicals, while steel shoes are coated for oxidation resistance.
  • Design Features: Patented stress relief notches distribute shear stresses uniformly, with a 'V' notch design for overload protection.

Upgrades
  • VSX Version: Connects shafts with gaps up to 300 mm, maintaining the basic four-component design.
  • Material Cross-Sections: Increased cross-sections reduce operational stresses.

Components
  • Capscrews: Standard metric capscrews with self-locking Nyloc thread patches, with stainless steel as an option, ensuring easy accessibility and avoiding blind mounting.
  • Hubs: Available in standard steel, stainless steel, or with special surface treatments for corrosion resistance, interchangeable across V, VS, and VSX versions.
  • High-Speed Rings: Optional for the VS version, machined from cold-rolled steel.

Coding System
A coding system is included for identifying different versions, sizes, materials, and configurations of the Rex Viva coupling.
Specifications:
Couplings are delivered without boring unless specified. For speeds exceeding the maximum, factory consultation is advised. Maximum bores for keyways adhere to ISO R773 standards, with options for maximum bore and reduced keyway.

Procedures:
  1. Select coupling type based on application and operating conditions, using reference charts on pages 13 and 14.
  2. Calculate nominal torque (Ta) using: Ta = (9550 x Pa) / n, where Pa is absorbed torque in kW and n is speed in min-1.
  3. Determine service factor (SF) using the catalogue table, considering additional factors for specific conditions.
  4. Calculate equivalent torque (Teq) using: Teq = Ta x (SF + St), where St is the temperature service factor.
  5. Select coupling size ensuring nominal torque (TN) is ≥ Teq.
  6. Verify selection by checking maximal peak torque.
  7. Check bores for known shaft diameters to ensure availability. Advise correct dimensions and tolerances if boring and keywaying are required.


Standards and Recommendations:
Service factors (SR) are provided for various load classifications. If the application is not listed, use the SR factor instead of SF.

Load Classifications:
Classifications are provided for various applications, each with specific service factors and considerations for torque variations and operational conditions.
Overview
The Rex Viva Coupling is a versatile general-purpose coupling for industrial applications like pumps, compressors, blowers, and mixers, enhancing productivity and efficiency.

Features and Benefits
  • Split-in-half Flex Element Design: Allows easy replacement without moving hubs or connected equipment.
  • Radial Bolting: Capscrews are easily accessible in tight spaces.
  • Special Formulated Polyurethane Flex Element: Offers optimal tensile strength, fatigue resistance, and excellent chemical and environmental aging resistance, requiring no lubrication.
  • Torsionally Soft: Cushions shock loads and dampens torsional vibration.
  • High Misalignment Capacity: Accommodates misalignment with low reactionary forces.
  • Visual Inspection: No need for disassembly to inspect.
  • Interchangeable Hubs: Identical close-coupled and spacer coupling hubs reduce inventory needs.

Global Customer Service
Rexnord offers world-class customer service across multiple countries, focusing on reducing maintenance costs, eliminating redundant inventories, and preventing equipment downtime.

Conclusion
Rexnord is a trusted name in power transmission and conveying components, offering a comprehensive product portfolio for industrial applications worldwide.
See more

Catalog excerpts

Viva? Coupling Catalog-2

Description Descripción Description A A C C F F D D G G B E B E Rex Viva Close-Coupled Couplings Acoplamientos estándar Rex Viva Accouplement Rex Viva Standard Rex Viva Spacer Couplings Acoplamientos Rex Viva versión larga Accouplement Rex Viva Version longue A - Two-piece flex element design allows for simple replacement without disturbing hubs or moving and realigning connected equipment. A - El diseño de los elementos flexibles en dos mitades permite un recambio sencillo sin afectar a los núcleos, ni desplazar, ni realinear el equipo conectado. A - La conception des éléments flexibles en deux...

 Open the catalog to page 2
Viva? Coupling Catalog-3

Description Descripción Description Rex Viva is based on the design of its reputable predecessor, Rex Omega. Design upgrades allow Rex Viva to transmit greater torque with a smaller coupling that, in addition, can accept larger bores. Although they have similar configurations, their parts are not interchangeable. El Rex Viva se basa en el diseño de su reputado predecesor, el Rex Omega. Las mejoras de diseño permiten al Rex Viva transmitir un mayor par de torsión con una talla más pequeña de acoplamiento, aceptando, además, diámetros de árboles más grandes. A pesar de que tienen configuraciones...

 Open the catalog to page 3
Viva? Coupling Catalog-4

Description Descripción Description el diseño básico de cuatro componentes: dos mitades flexibles unidas siguiendo el eje axial y dos núcleos. No son necesarios núcleos ni manguitos especiales. séparés axialement et deux moyeux. Il ne nécessite aucun manchon ni moyeux spécial. Capscrews Metric capscrews with self-locking Nyloc thread patches are in standard steel (stainless steel optional). They conform to precise engineering specifications and are supplied standard with flexible elements. They fasten radially for easy accessibility. Blind mounting of capscrews, therefore, is avoided. The capscrews...

 Open the catalog to page 4
Viva? Coupling Catalog-5

Coding V 2 3 Codificación 4 - 5 - 6 Codification 7 8 7 Aucun : standard S : longue SX : Extra longue Size Tamaño Taille 110, 125, 130, 150, 170, 190, 215, 245, 290, 365, 425, 460 Shoe and capscrew material 110, 125, 130, 150, 170, 190, 215, 245, 290, 365, 425, 460 Material de tejas y tornillos 110, 125, 130, 150, 170, 190, 215, 245, 290, 365, 425, 460 Matière des coquilles et vis Sin código: estándar Aucun : standard High speed ring (Only S and SX version) Anillo de alta velocidad (Sólo versiones S y SX) Anneau de haute vitesse (Versions S et SX seulement) Sin código: sin anillo R: con anillos...

 Open the catalog to page 5
Viva? Coupling Catalog-6

V Standard version 100 460 Versión estándar Version normale Size Talla Taille Hub type Tipo de núcleo Type de moyeux Hub material Material del núcleo Matière des moyeux HRB / HCB - / STL / SS / X ; ; El usuario es responsable de la provisión de dispositivos de seguridad y de la correcta instalación de todo el equipo. ;;;;;;; ;;; ;;;;;;; ;;;; ;;;;;; ;;;;;;;;;;;; ; ;;;;;;;;;;;;;;;;;;;; ; ; ;;; ;;;;;;;;;;;;; ;;;; ;;;;;;;;;;;;;;;;;;;; ;;;;;;;;;;;;; ;;;;;; ; ;;;;;;;;;;;;;;;;;;;; ;;;;;;;;;;;;; ;;;;;; ;;;; ;;;;;;;;;;;; ;;;;;;;;;;;;;;;;;;;; ;;;;;; ;;;;;;;;;;;;; ; ; ;;; ;;;;;;;;;;;;;;;;;;;; ;;;;;;;;;;;;;...

 Open the catalog to page 6
Viva? Coupling Catalog-8

V S 110 Spacer version 460 Versión larga Version longue Size Talla Taille High speed ring Anillo de alta velocidad Anneaux de haute vitesse Hub type Tipo de núcleo Type de moyeux Hub material Material del núcleo Matière des moyeux -/R HRB / HCB - / STL / SS / X The user is responsible for the provision of safety guards and correct installation of all equipment. ;; ;;;; ; ;;;; ; ;;;; ;;;; ;;;; ;;;; ;; ;;;; ;;;; ;;;; ;; ;;;; ; ;;;; ;;; ; ;;;; ;;;; ; ;;;; ;;;; ;;;; ;; ;;;; ;;;; ;;;;;; ;;;;;; ;;;;;; ;;;;;; ; ;;;; ; ; ; ; ; ; ; ;;; ; ; ;;;;;; ; ; ; ; ; ; ; ;;;;;;;;;;;;;; ; ;;;;;; ; ; ; ; ; ; ;;;;;;;;;;;;;;;;;;;...

 Open the catalog to page 8
Viva? Coupling Catalog-9

V Spacer version Versión larga Version longue Size Talla Taille -/R High speed ring Anillo de alta velocidad Anneaux de haute vitesse HTL Hubs for Magic-Lock® bushing Núcleos para casquillo Magic-Lock® Type de moyeux Hub material Material del núcleo Matière des moyeux S 110 460 - - / STL / SS / X The user is responsible for the provision of safety guards and correct installation of all equipment. ;;;; ;;;; ;;;; ; ;;;; ;;;; ;; ;;;; ; ;;;; ; ;;;; ;; ;;;; ; ;;;; ;;;; ; ;;;; ;;;; ;;;; ;;;;;; ;;;;;; ;;;;;; ;;; ;;;;;; ;; ;;;; ; ;; ;;;; ; ;;;; ;;;; ; y y;yyy ;;;;; yyyyy ;;;;; y yyy;y ;;;;; yy ;;;;;;...

 Open the catalog to page 9
Viva? Coupling Catalog-10

V SX 110 Extented spacer version 460 Versión extra larga Version extra longue Size Talla Taille High speed ring Anillo de alta velocidad Anneaux de haute vitesse Hub type Tipo de núcleo Type de Moyeux Hub material Material del núcleo Matière des moyeux R HRB / HCB - / STL / SS / X The user is responsible for the provision of safety guards and correct installation of all equipment. yyyy ;;;; yyyy ;;;; yyy ;;; y ; yyyyy ;;;;; yyyyy ;;;;; yy ;; yyyy ;;;; yyy ;;; yyyy ;;;; yyy ;;; yyyy ;;;; yyyy ;;;; yyy ;;; yyyyy ;;;;; yyyyy ;;;;; yyy ;;; ;; ;;;; ;; ;;;; ;;;; ;;;; ;;;; ;;;; ;;;; ;;;; ;;;; ;;;; ;;;;...

 Open the catalog to page 10
Viva? Coupling Catalog-11

V Extented spacer version SX 110 460 Versión extra larga Version extra longue Size Talla Taille High speed ring Anillo de alta velocidad Anneaux de haute vitesse Hubs for Magic-Lock® bushing Núcleos para casquillo Magic-Lock® Type de Moyeux Hub material Material del núcleo Matière des moyeux R HTL - / STL / SS / X ; ;; ;;;; ; ;;;; ;;;; ;;;; ;;;; y ; yyyyy ;;;;; yy y ;; ; yy y ;; ; yyyyy ;;;;; ;;;; ;; ;;;; ;; ;;;; ;;;; ;;;; ;; ;;;; ;;; ;;;; ; ;; ;;;; ;; ;;;; ;;;; ;;;; ;; ;;;; ;; ;;;; ;;;; ;;;; ; ;; ;;;; ;;;; ;;;; ;;; ;;;;;; ;;;;;; ;;;;;; ;;;;;; ;; ;;;; ; ;;;; ;;;; ;;;; ;;;; yyyyy ;;;;; yyyyy ;;;;;...

 Open the catalog to page 11
Viva? Coupling Catalog-12

Selection Procedure 1/ Choice of coupling type: The choice is based on the type of application and the operating conditions. The reference charts on page 13 and 14 can help with the choice of coupling type. (Note: only use couplings with positive engagement for lifting motion!) 1/ Elección del tipo de acoplamiento: La elección se basa en el tipo de aplicación y en las condiciones de operación. Las tablas de referencia en las páginas 13 y 14 pueden facilitar la elección del tipo de acoplamiento. (Nota: ¡utilice sólo acoplamientos con clavamiento seguro para un movimiento de elevación!) 2/ Calculation...

 Open the catalog to page 12
*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.