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Series RRS · Flector

Elastic Coupling RRS

Jaw-Flex coupling with spacer for shafts apart. Allows axial motor removal without moving the pump. Complies with API 610 / API 671 standards for process applications.

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S = 90 → 180 mm
Entretoises standard

Idem SW
Couple nominal

API 610
Process compatible

Caoutchouc · PU · Hytrel
3 duretés étoile

Entretoise standard 90 / 100 / 140 / 180 mm pour arbres espacés

Démontage axial du moteur sans déplacement de la pompe (back pull-out)

Hérite de l'étoile fendue SW — maintenance sans démontage

Conforme aux exigences API 610 / API 671 pour pompes process

Couple compensable selon la longueur d'entretoise

Adapté aux groupes moto-pompe centrifuges process

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Benefits

Why choose the RRS?

The RRS spacer meets the requirements of process pumps (API 610) — axial motor removal without touching the pump.

01 / ADVANTAGE

Back pull-out

The spacer frees sufficient space between the shafts to allow axial removal of the motor or pump impeller without moving the pump or breaking piping. Standard on API 610 pumps.

02 / ADVANTAGE

API compliant

The RRS is dimensioned to meet API 610 (process pumps) and API 671 (special service couplings) requirements — aerospace quality for petrochemistry / oil & gas applications.

03 / ADVANTAGE

Split spider retained

The RRS retains the SW split spider element: maintenance without disassembly, secure fail-safe mode, choice of material (rubber / PU / Hytrel).

Fiche Technique

Features détaillées

Technical data from the manufacturer datasheet RATHI® — RRS Spacer coupling.

Reference table — RRS (Flector)

Données techniques détaillées disponibles dans la fiche PDF

The complete reference table (nominal torques, bores, dimensions, speeds) is available in the manufacturer's technical PDF datasheet. Download it below or ask us for a custom summary based on your application.

Datasheet — RRS

All sizes, dimensions, materials and torques available in the manufacturer's documentation.

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Product description

The RRS spacer elastic coupling is the spacer version of the SW coupling. It incorporates a standard spacer of 90, 100, 140 or 180 mm between the two hubs, allowing axial motor removal without moving the pump.

This feature, known as "back pull-out", is required by the API 610 standard governing centrifugal process pumps for petrochemical, refinery and oil & gas industries. The RRS also complies with the API 671 standard dedicated to special service couplings.

The RRS retains the split spider qualities of the SW series: maintenance without motor disassembly, secure fail-safe mode in case of spider wear, and choice of elastic element material according to the constraint (synthetic rubber, polyurethane, Hytrel).

Standard spacer 90 / 100 / 140 / 180 mm for spaced shafts
Axial motor removal without pump movement (back pull-out)
Inherits the SW split spider — maintenance without disassembly
Complies with API 610 / API 671 requirements for process pumps
Torque adjustable according to spacer length
Suited to centrifugal process motor-pump assemblies

Technical view — RRS