ROSTA SE 18 Swiss Automatic Elastic Tensioner

Nro. de orden: 06 011 003 – Standard SE series maintenance-free elastic tensioning unit from ROSTA, Suiza. Designed for constant-tension automatic tensioning, vibration damping and elongation compensation on chain, timing belt and V-belt drives. Rubber elastic core, permanently lubrication-free.

SE 18 ：2026111115180210

SE 11: 2026111115190180

✅ Especificaciones Básicas

Peso: 0.6 kilos

Central fixing thread: M10

Rubber compound: Rubmix 10 (natural rubber)

Temperatura de funcionamiento: -40 ℃ ~ +80 ℃

Maximum pre-tension angle: ±30° from neutral position

Travel: 50 milímetros

Tension (J1 standard mounting position)

10° preload: 75 norte

20° preload: 185 norte

30° preload: 350 norte

Tightening torque MA: 49 Nuevo Méjico (M10, Clase 8.8)

📌 SE18 Variant Models (huella idéntica)

Modelo	Número de pedido.	Características	Rubmix / Rango de temperatura
SE 18-G	06 013 203	Oil-resistant version, yellow dot marking	Rubmix20, -30~+90℃
SE 18-W	06 015 003	High-temperature version, red dot marking; tensión 40% lower than standard	Rubmix40, up to +120℃
SE 18-R	06 011 703	Reinforced swing arm, for engine / compressor applications	Rubmix10, -40~+80℃
SE-I 18	06 071 112	Stainless steel version (alimento / pharmaceutical service)	Rubmix10, -40~+80℃, peso 0.7 kilos
SE-B 18	06 021 003	Boomerang dual-arm design, triple compensation for long drive lines	Rubmix10, peso 0.8 kilos
SE-F 18	06 061 003	Front flange mounting version, blind-hole frame installation	Rubmix10, peso 0.7 kilos

🛠️ Aplicaciones típicas

Automatic tensioning for chain drives, V-belts, timing belts and conveyor belts

Elastic loading for belt scrapers / cleaners

Transmitir, embalaje, carpintería, impresión, agricultural machinery and fan drives

Absorb shocks, reduce polygon effect, lower noise and prevent slip; no manual periodic retensioning required

🧩 Accesorios compatibles

VS 15/18: Preload limit clamp (0–15°), for precise pre-tension setting

WS 18: Soporte de montaje

N-series sprocket assemblies, P chain pressure blocks, R nylon tensioning rollers

SS safety sleeve (for slippery / rough mounting surfaces)

ROSTA SE 18 (Nro. de orden: 06 011 003) Automatic Tensioning Element

Ketten Fuchs compatible part. Standard maintenance-free rubber torsion spring tensioner from ROSTA Switzerland. Provides automatic elongation compensation and vibration damping, no lubrication required.

Información básica

Modelo: SE 18

OEM Order No.: 06 011 003

Rubber compound: Rubmix 10 (natural rubber)

Temperatura de funcionamiento: -40 ℃ ~ +80 ℃

Material: Steel housing and inner core, blue painted finish

Peso: 0.6 kilos

Principio de funcionamiento: Rubber torsion elastic unit, delivers constant tension torque with damping; no conventional springs or wear joints

Force & Travel Specifications

J1 mounting position (standard arm length 100 milímetros): Fmax = 350 norte, max travel s = 50 milímetros

J2 mounting position (short arm 80 milímetros): Fmax = 440 norte, max travel s = 40 milímetros

Dimensiones generales (milímetros)

Parámetro	Valor
D	58
mi	79 (+1.5/-0.5)
GRAMO	7
h	M10 (central mounting thread)
J1	100
J2	80
k	30
l	115
METRO	30
norte	35
oh	10.5
PAG	8.5
t	10.5
Ud.	25.3

SE18 Body Variants

SE 18-G (06 013 203): Oil-resistant Rubmix20, galvanized components, -30~+90℃

SE 18-W (06 015 003): Heat-resistant Rubmix40, -35~+120℃, tensión 40% lower than standard SE

SE-F 18: Front flange mounting version

SE-I 18: Stainless steel version

SE-R 18: Reinforced arm version

Pautas de instalación (Chain Drives Recommended)

Mount on the slack side of the chain, close to the small sprocket: increases wrap angle, suppresses polygon effect and prevents jumping teeth
Position the swing arm roughly parallel to the chain; recommended preload angle ≤20°, preload force ≤50% of rated value
Método de instalación: Central M10 bolt friction locking. To set preload: loosen the flange, rotate the housing with a wrench to set preload, then retighten the central bolt
Mounting surface must be flat and rigid; optional pin anti-rotation in flange slot for dusty / ambientes hostiles

Aplicaciones típicas

Automatic constant tensioning for roller chains, timing belts and flat belts

Transportadores, maquinaria de embalaje, carpintería, glass equipment, líneas de producción automatizadas

Scraper compression, idler roller floating support and low-stroke vibration damping

Solución de problemas

Rubber cracking / envejecimiento: Sobretemperatura, oil attack or long-term operation at maximum deflection; prefer SE-G oil-resistant variant
Tension decay: Rubber fatigue. The ROSTA rubber insert cannot be replaced separately; replace the complete unit
Ruido / chain jumping: Mounted on the tight side, preload angle exceeded, or large sprocket misalignment

Notas de reemplazo

Equivalente nacional: Multiple domestic rubber torsion tensioners marked SE18. Verify J1/J2 force rating, central M10 thread and overall dimensions. Rubber compound determines temperature and oil resistance.

Selection Table for ROSTA SE 18 (06 011 003) Compatible N-Type Tension Sprockets

N = ROSTA original bearing-equipped idler sprockets, standard double-side shielded deep groove ball bearing 6200ZZ, aburrir 10 mm to fit SE18 arm pin hole. Single-row S / double-row D, for ANSI / ISO roller chains

Nota: SE18 maximum tension 350 norte; 15 teeth preferred. Minimum meshing teeth ≥3, ≥4 teeth recommended. Install on chain slack side

Modelo Original	Número de pedido.	ANSI Chain	ISO Code	Row	Teeth	Pitch Diameter(milímetros)	Tooth Width B(milímetros)
N3/8″–10 S	06 500 001	35 (3/8″)	06B	Single S	10	40.3	5.2
N3/8″–17 S	06 500 001-17t	35	06B	Single S	17	67.8	5.2
N1/2″–12 S	06 500 002	40 (1/2″)	08B	Single S	12	61.1	7.2
N1/2″–12 D	06 500 002D	40 (1/2″)	08B	Double D	12	61.1	7.2
N5/8″–12 S	06 500 003	50 (5/8″)	10B	Single S	12	76.4	9.1
N5/8″–12 D	06 500 003D	50 (5/8″)	10B	Double D	12	76.4	9.1
N3/4″–12 S	06 500 004	60 (3/4″)	12B	Single S	12	91.7	11.1
N3/4″–12 D	06 500 004D	60 (3/4″)	12B	Double D	12	91.7	11.1

Smooth Compression Rollers (RL series, no tooth engagement, for pressing outer chain plate)

Modelo	Número de pedido.	Compatible SE	Roller OD	Ancho	Velocidad máxima
RL 15/18	06 580 902	SE15 / SE18	45 milímetros	40 milímetros	6000 rpm

Selection Constraints (Crítico)

Upper chain limit: SE18 not recommended for chain larger than 60 (12B) fila única; 80 / 16B chain requires upgrade to SE27
Preload angle: Max recommended deflection ≤20°, preload force ≤50% rating (≤175 N) to prevent premature rubber ageing
Mounting pin: SE18 arm pin diameter d=10 mm; sprocket bore 10 mm with bearing, fit directly to arm hole and lock with M10 nut
Velocity limit: N sprocket max linear velocity ≤2.5 m/s; select SE27 above this speed
Material: Standard N sprocket C45 hardened steel; stainless steel sprockets available for food / wet service; RL rollers are black wear-resistant polyurethane

Domestic Equivalent Matching Requirements for Idler Sprockets

Aburrir: 10 milímetros

Cojinete: 6200ZZ

Tooth profile: ISO 8187 (DE), avoid non-standard American tooth forms which cause jumping teeth

Ancho total: Must not interfere with SE18 tension arm side plates

Tightening Torque for SE18 Central Bolt

M10 Class 8.8: 49 Nuevo Méjico (tensioner body fixing bolt)

Guía de selección rápida

06B / 35 → N3/8-10S

08B / 40 → N1/2-12S (SE18 preferred)

10B / 50 → N5/8-12S

12B / 60 → N3/4-12S (límite superior, careful application)

No meshing required, press chain plate → RL15/18 smooth roller

ROSTA SE Series Automatic Tensioning Elements Full Model List (Standard Units + Variants)

Series description: Rubber torsion spring maintenance-free automatic tensioners for chain and belt drives. ROSTA Switzerland, SE = main standard series. Suffixes indicate application variants; same numeric size shares identical mounting envelope, only rubber compound and surface treatment differ.

Standard Base Models (SE Standard, Rubmix10, -40~+80℃, blue paint)

Modelo	Número de pedido OEM.	Central Thread	Fmax @ J1 Arm	Peso
SE 11	06 011 001	M6	80 norte	0.2 kilos
SE 15	06 011 002	M8	135 norte	0.4 kilos
SE 18	06 011 003	M10	350 norte	0.6 kilos
SE 27	06 011 004	M12	810 norte	1.7 kilos
SE 38	06 011 005	M16	1500 norte	3.6 kilos
SE 45	06 011 006	M16	2600 norte	5.5 kilos
SE 50	06 011 007	M20	4200 norte	8.0 kilos

Definición de sufijo

SE-G: Oil-resistant grade, Rubmix20, galvanized, yellow dot mark; -30~+90℃ for oily, gearbox and outdoor environments

SE-W: High-temperature grade, Rubmix40, red dot mark; -35~+120℃; tensión 40% lower than standard

SE-F: Montaje de brida frontal, blind flange, cannot be bolted from rear; for space-restricted cabinet installation

SE-I: Stainless steel INOX (GX5CrNi19-10), alimento, pharma and corrosive humid service

SE-R: Reinforced swing arm, white ring mark; engines, compresores, shock-load duty

SE-B (Boomerang): Dual-arm boomerang style, bi-directional tensioning for special belt circuits

SE-FE: Reinforced flange version, engine dedicated fixing design

Variants by Size

SE 11 Variants

SE 11 (Estándar)｜SE 11-G (resistente al aceite)

No standard factory SE11-W / SE11-I / SE11-R

SE 15 Variants

SE 15｜SE 15-G｜SE 15-W｜SE-F 15｜SE-I 15｜SE-R 15

SE 18 Variants (Tu modelo objetivo)

SE 18 (06 011 003)｜SE 18-G (06 013 203)｜SE 18-W (06 015 003)｜SE-F 18｜SE-I 18｜SE-R 18 (06 011 703)

SE 27 Variants

SE 27｜SE 27-G｜SE 27-W｜SE-F 27｜SE-I 27｜SE-R 27

SE 38 Variants

SE 38｜SE 38-G｜SE 38-W｜SE-F 38｜SE-I 38｜SE-R 38

SE 45 Variants

SE 45｜SE 45-G｜SE 45-W｜SE-F 45｜SE-I 45｜SE-R 45

SE 50 Variants

SE 50｜SE 50-G｜SE 50-W｜SE-F 50｜SE-I 50

Accesorios compatibles (Not SE body units)
N-series tension idler sprockets (N3/8, N1/2, N5/8, N3/4, N1″, single S / double D)
RL-series smooth polyurethane compression rollers (RL11, RL15/18, RL27, RL38)
SES / VS / SV: Preload adjustment tools
Chain slide pads, guide blocks, angle brackets
Quick Selection Notes
Same numeric size (p.ej. SE18 / SE18-G / SE18-W): identical outline and mounting hole geometry, only rubber compound and coating differ; intercambiables directos
SE-W high-temperature version has 40% reduced tension; select one size up during design
SE-I stainless steel: Mayor costo, same force rating as standard, alimento & pharma use
SE-R reinforced arm: For shock loads; not recommended for normal chain conveyors due to premium cost
SE-F flange version: Different mounting interface; cannot directly replace center-thread SE standard units
Other ROSTA Elastic Units (Not SE series, easy to confuse)

DR, AB, AD-P, ÁSPID, MEGABYTE, CALLE, DK series. These are swing supports, vibration isolators and motor mounts, not automatic chain / belt tensioners. Do not mix up with SE series.