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Elastic Coupling SWA — Arbre Élastique Aluminium

Series SWA · Arbre Élastique Aluminium

Aluminum Elastic Shaft SWA

Flexible elastic shaft in machined aluminum. Compensates misalignments through controlled body flexion. Low inertia, high angular accuracy, ideal for servomotors and encoders.

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Aluminium
Faible inertie

Précision élevée
Servomoteurs

Flexion contrôlée
Compensation

Multi-tailles
Standard

Corps aluminium usiné — fente hélicoïdale ou en feuilles flexibles

Compensation par flexion of the coupling body

Inertie minimale — adapté aux servomoteurs haute dynamique

Précision angulaire élevée — pas de jeu torsionnel

Tolérance modérée aux désalignements (parallèle, angulaire, axial)

Anti-corrosion naturelle, sans élastomère sensible

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Benefits

Why choose the SWA?

The SWA combines angular precision, low inertia and durability — the coupling of choice for servomotors.

01 / ADVANTAGE

Precision

The aluminium flexible shaft shows no torsional backlash. Angular precision is maintained between the two shafts — critical for servo loops and encoders.

02 / ADVANTAGE

Minimum inertia

Aluminium drastically reduces transmission inertia. Optimal dynamic response, fast starts/stops, energy savings on short-cycle machines.

03 / ADVANTAGE

No elastomer

No rubber spider sensitive to ageing, UV or solvents. Long and constant service life. Suited to varied industrial environments.

Fiche Technique

Features détaillées

Données techniques fabricant — Arbre Élastique SWA Aluminium.

Reference table — SWA (Arbre Élastique Aluminium)

Modèle	Couple Nominal	Long. Max	Décal. Axial Max	Masse (Rohr/m / Couplage)	Rigidité Tors. Rohr	Rigidité Tors. Coupl.	Rigidité Latérale
SWA-EE-17	17 Nm	3000 mm	1,8 mm	0,95 / 0,26 kg	3360 Nm/rad	1425 Nm/rad	1005 N/mm
SWA-EE-60	60 Nm	4000 mm	2,1 mm	1,90 / 0,53 kg	15500 Nm/rad	3050 Nm/rad	1280 N/mm
SWA-EE-160	160 Nm	4000 mm	2,2 mm	2,20 / 1,00 kg	46600 Nm/rad	10734 Nm/rad	2200 N/mm
SWA-EE-325	— Nm	— mm	— mm	— kg	— Nm/rad	— Nm/rad	— N/mm
SWA-EE-450	450 Nm	4000 mm	3,0 mm	3,60 / 2,50 kg	78600 Nm/rad	27700 Nm/rad	3360 N/mm

Arbres élastiques flexibles Aluminium — gamme RATHI / HA-CO.

Max lateral offset: V = L × tan(0.9°). Bolt tightening torque MA = 17.5 Nm.

⚡ Pour cotes secondaires et tolérances : voir fiche PDF complète ci-dessous

Datasheet — SWA

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

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Product description

The SWA aluminium flexible shaft is a machined-body coupling that compensates misalignment through controlled flexion. The helical slot or flexible-disk arrangement absorbs parallel, angular and axial alignment defects without using an elastomer element.

Aluminium offers minimum inertia, ideal for high-dynamic servomotors, angular encoders and positioning systems. Angular precision is excellent: no torsional backlash, no parasitic oscillation.

The absence of elastomer avoids ageing problems (UV, temperature, solvents) and guarantees a long and constant service life. The SWA is the coupling of choice for precision applications in demanding industrial environments.

Machined aluminium body — helical slot or flexible disks
Compensation by controlled flexion of the coupling body
Minimum inertia — suited to high-dynamic servomotors
High angular precision — no torsional backlash
Moderate tolerance to misalignment (parallel, angular, axial)
Natural anti-corrosion, no sensitive elastomer

Technical view — SWA

Aluminum Elastic Shaft SWA

Why choose the SWA?

Precision

Minimum inertia

No elastomer

Features détaillées

Reference table — SWA (Arbre Élastique Aluminium)

Datasheet — SWA

Product description

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