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TERCESA,S.L.
SFK-SRK WORM GEARBOXES

SFK-SRK WORM GEARBOXES

Product catalog summary

Characteristics
The SFK-SRK worm gearboxes are designed with a compact aluminum cast housing, making them lightweight. They are available in various versions, with or without feet, and come with numerous accessories to enhance versatility. The worm shaft is made from hardened-casehardened compound steel, while the worm wheel has a cast iron hub with bronze casting.

Designation
When ordering, specifying the version is crucial. The document lists several versions, such as SFK..A_, SRK..A_, SFK..B_, and SRK..B_.

Lubrication and Mounting Positions
The gearboxes use PAG synthetic lubricant with ISO 320 viscosity. Sizes 30, 40, 50, 63, and 75 have one filling plug. Details on lubricant quantities for different mounting positions are provided.

Terminal Board Position
Terminal board positions are designated as A, B, C, and D for various mounting positions.

Technical Data
This section includes tables with input speed (n1), output speed (n2), torque (T2), power (P1), and other parameters for different gearbox sizes. It highlights the need to calculate maximum allowable torque (T2M) using a service factor (FS').

Moment of Inertia
Information on the moment of inertia for different configurations is provided, though specific values are not included.

Possible Set-ups and Dimensions
The document describes possible set-ups and dimensions for various gearbox sizes, enhancing adaptability.

Accessories
A range of accessories is available to increase the gearboxes' functionality and application scope.

Torque Limiter with Through Hollow Shaft
This feature is crucial for applications requiring precise torque control.

Spare Parts List
A comprehensive list of spare parts ensures easy maintenance and component replacement.

Calibration and Maintenance
Regular calibration of the torque limiter is emphasized, especially during the running-in period. The slipping torque decreases over time due to contact surface lapping. Regular checks are advised for accuracy, and testing the transmissible torque on the plant is necessary for smaller calibration errors. The device is delivered calibrated to the specified torque unless otherwise ordered.

Product Specifications
Specifications for torque limiters with through hollow shafts include dimensions and configurations for different models (SFK, SRK), listing parameters like torque values, washer arrangements, and ring nut revolutions.

Spare Parts List
A detailed list specifies components like bearings, oil seals, friction rings, and washers, with dimensions and part numbers for easy identification and replacement.

Additional Notes
The version with a torque limiter does not include output shafts. Specific configurations and additional components like tapered roller bearings are available upon request.

Catalog excerpts

RIDUTTORI A VITE SENZA FINE SFK-SRK SFK-SRK WORM GEARBOXES SCHNECKENGETRIEBE SFK-SRK Caratteristiche Designazione Lubrificazione e posizioni di montaggio Posizione morsettiera Dati tecnici Momenti d'inerzia Predisposizioni possibili Dimensioni Accessori Limitatore di coppia cavo passante Lista parti di ricambio Characteristics Designation Lubrication and mounting position Terminal board position Technical data Moment of inertia Possible set-ups Dimensions Accessories Torque limiter with through hollow shaft Spare parts list Merkmale Bezeichnung Schmierung und Bezeichnung Lage des Klemmkasten Technische Daten Trägheitsmoment Mögliche Vorrichtungen Abmessungen Zubehör Drehmomentbegrenzer mit durchgehender Hohlwelle Ersatzteilliste

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Albero uscita Output shaft Abtriebswelle Braccio di reazione Torque arm Drehmomentstütze Seconda entrata Additional input Zusatzantrieb 2.2 Designation Limitatore di coppia. Torque limiter Drehmomentbegrenzer Posizione di mont. Mounting position Einbaulage Die Schneckengetriebe der SFK - SRK Serie sind äußerst leicht dank der kompakten Form des Gehauses aus Aluminiumguss. Die Serie bietet verschiedene Versionen mit und ohne Füße sowie zahlreiche Zubehörteile an, was zur vielseitigen Anwendbarkeit der Getriebe in vielerlei Applikationen dient. Die Schneckenwelle ist aus legierten gehärteten Einsatzstahl...

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Riduttori a vite senza fine SFK - SRK sono forniti tutti e sempre completi di lubrificante sintetico a base PAG con classe di viscosità ISO 320. Nei corpi in alluminio 30, 40, 50, 63, 75 è presente un solo tappo di riempimento olio. SFK - SRK worm gearboxes are supplied with PAG synthetic lubricant featuring an ISO 320 viscosity class. Aluminium housings size 30, 40, 50, 63 and 75 have one filling plug only. SFK - SRK Schneckengetriebe werden mit PAG synthetischen Schmierstoff Viskositätsklasse ISO 320 geliefert. Gehäuse aus Alumiunium Größe 30, 40, 50, 63 und 75 verfügen nur über eine Einfüllschraube....

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* ATTENZIONE: la coppia massima utiliz- * WARNING: Maximum allowable torque * ACHTUNG: das max. anwendbare zabile [T2M] deve essere calcolata utiliz- [T2M] must be calculated using the follow- Drehmoment [T2M] muss mit folgendem zando il fattore di servizio: T2M = T2 x FS’ ing service factor : T2M = T2 x FS’ Betriebsfaktor berechnet werden: T2M = T2 x FS‘

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Momenti d’ inerzia [Kg·cm ] (riferiti all’albero veloce in entrata) Moments of inertia [Kg·cm 2] (referred to input shaft) Trägheitsmoment [Kg·cm 2] (bez. Antriebswelle)

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2.7 Mögliche Vorrichtungen Diametro fori PAM / Holes diameter IEC-Input Bohrungdurchmesser IEC-Antrieb * A richiesta, solo con corpo speciale / Upon request, only with special body / Auf Wunsch nur mit speziellen Körper

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Albero entrata Input shaft Eingangswelle Albero lento cavo Hollow output shaft Ausgangshohlwelle

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M Flangia pendolare / Side cover for shaft mounting / Flansch für Drehmomentstutze * Vedere dettaglio (SFK - SRK 30/P) Pls refer to above detail (SFK - SRK 30/P) Siehe o.g. Einzelheit (SFK - SRK 30/P) FP2 8 Fori / Holes / Bohrungen 4 Fori / Holes / Bohrungen Flangia pendolare speciale / Side special cover for shaft mounting / Flansch für Drehmomentstutze nötig. Pp 8 Fori / Holes / Bohrungen 4 Fori / Holes / Bohrungen

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Flangia uscita / Output flange / Abtriebsflansch Tipo flangia / Type flange / Typ flansch N.B. La flangia uscita può essere montata solo sul riduttore in versione P. Le flangie indicate con (*) necessitano di un coperchio speciale. The output flange is to be mounted to the gearbox P version only. A special cover is required for the flanges marked by (*). Der Abtriebsflansch darf nur auf das Getriebe Version P montiert werden Für die Flansche mit (*) ausgezeichnet ist einen Sonderdeckel nötig. Tipo flangia Type flange

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Albero lento semplice / Single output shaft / Standard Abtriebswelle Braccio di reazione / Torque arm / Drehmomentstütze BR2 Con boccola / With bush / Mit Büchse BR1 Senza boccola / Without bush / Ohne Büchse Albero lento doppio / Double output shaft / Doppelte Abtriebswelle Entrata supplementare (vite bisporgente) Additional input (double extended input shaft) Zusatzantrieb (beidseitige Welle) Opzioni disponibili: Available options: Cuscinetti a rulli conici corona Tapered roller bearing for worm wheel Auf Anfrage ist folgendes Zubehör erhältlich: Kegelrollenlager für Schneckenrad

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*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.

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