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VIVA FLEXIBLE COUPLINGS FROM REXNORD INSTALL EASILY AND EXTEND LIFE OF CONNECTED EQUIPMENT

MULTIPLE-USE PARTS ALLOW PLANT-WIDE REPLACEMENT WITH SMALL INVENTORY

A global line of flexible couplings designed to extend machinery life and reduce downtime in rotating equipment applications has been introduced by Rexnord. The new Rex Viva ATEX certified couplings are designed to metric standards. They meet ANSI, ISO, and DIN specifications and can be adjusted easily at the user site to accommodate wide variations in shaft spacing.

Since they can be used in a wide range of general purpose coupling situations, they are ideally suited for plant-wide or company-wide standardization, including retrofit of other coupling technologies. Reversible hubs and optional mounting holes allow the Viva series to meet coupling requirements with significantly lower inventory than other systems. Full stock is maintained in Belgium for rapid delivery to European customers.

Designed to extend equipment life

The non-lubricated torsionally soft couplings use a polyurethane material specially formulated for durability, vibration dampening, fatigue resistance and environmental compatibility. The elements cushion shock loads and accommodate a relatively high degree of unavoidable equipment misalignment. They are bonded to corrosion-resistant coated shoes, eliminating the need for mechanical clamping hardware. Carbon steel shoes are standard; stainless steel shoes are available.

Bearing life in connected equipment is extended because the flexible element of the couplings maximizes torque capacity while minimizing stress. The center notch, shaped like the letter V, channels the highest stresses away from the urethane to metal bond area, providing a uniform failure area that reduces potential damage in case of overload.

Fast, easy installation

Because the element is supplied in two semi-circular pieces, it can be quickly bolted into place without disturbing the hubs or moving and realigning connected equipment. This design allows faster replacement than clamped elements (known as "tire coupling" design). Capscrews are supplied with self-locking nylon thread patches.

Small inventory handles many situations

Hubs are reversible, reducing inventory requirements, and easily aligned to accommodate multiple shaft gaps. They are available in rough bore, custom bore or brushed designs.

With higher torque and bore capacity than similar elastomer couplings, the Viva line allows specification of smaller sizes, saving both weight and cost.

The Viva line includes Close-Coupled and Spacer designs. Close Coupled are for use where the gap between connected equipment is relatively small. Spacer couplings are used in applications requiring longer shaft gaps. VSX Extended Spacer Series couplings connect equipment requiring shaft gaps beyond the capacity of the Spacer series. All are designed for easy retrofit of other coupling designs.

Typical applications include pumps, blowers, compressors, mixers and other industrial uses.

Headquartered in Milwaukee, Wisconsin, USA, Rexnord Industries, Inc., has supplied power transmission components, drives and conveying equipment to process industries for over 80 years. The company has a worldwide network of service centers and warehouses to support its independent stocking distributors.

Further information from:

Rexnord NV
Attn: Gerda De Doncker
Cross Point - Leuvensesteenweg, 248 C
B-1800 Vilvoorde - Belgium
Phone: 32-2-255-8311
Fax: 32-2-252-5282


Caption:
A.: New Rex Viva couplings from Rexnord accommodate wide variations in shaft spacing and allow plant-wide replacement standardization.

B. Split-in-half element design of Rex Viva couplings allows rapid replacement without disturbing hubs or realigning connected equipment.