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SITI S.p.A. La ringrazia per la fiducia accordatae Le ricorda che il Suo riduttore il risultato di un lavoro di miglioramento del prodotto che i nostri tecnici perseguono continuamente, gra- zie ad una ricerca costante nel settore.La rete di Assistenza a Sua disposizione peraiutarLa a risolvere dubbi che potessero sorge- re nella lettura di questa pubblicazione.E訒 vietata la riproduzione, la memorizzazione olalterazione, anche parziale, di questa pubbli- cazione, senza una autorizzazione scritta da parte della SITI S.p.A. We, at SITI S.p.A., would like to thank you for the confidence shown in...

INTRODUCTIONThis catalogue relates to parallel shaft gear-boxes PL-MPL series and to shaft mounted helical PD-MPD series, manufactured by SITI SpA. The PL-MPL and PD-MPD series gearboxes have a G25 cast iron housing and are fitted with two or three stage of reduction gears.MANUFACTURING FEATURES?Gearboxes provides with trains of gearsat 2 or 3 stages of reduction.?In the PL and PD gearboxes, the first andsecond stages of reduction are per- formed with helical toothed cylindrical gears with accurately corrected profiles. The third reduction stage is achieved by adding a further reduction stage...

?All the gearboxes offer a chance to ac-cept high external loads, both radial and axial ones, wherever oriented: our tables give the ratings which can be applied with no troubles in any condition, for special application purposes it is how- ever advisable to evaluate the possible suitability through a specific calculation.?Dynamic efficiencies are very high: 0.96in the two stage reduction versions and 0.92 in the three stage reduction ver- sions.?It is allowed to operate in particularlysevere conditions of application, still saving sufficiently satisfactory life times; in connection with this,...

PECULIARIT COSTRUTTIVE CONSTRUCTION PECULIARITIES KONSTRUKTIVE EIGENSCHAFTEN LUBRICATIONAll PL and PD gearboxes provided with theprimary reduction (PL../3, and PD../3) are supplied with the primary reduction already pre-lubricated in-house, and therefore do not require any filling with oil by the customer. It is used mineral oil type ISO VG 220 (seechart 1). On the contrary, PL and PD gearboxes with 2 stages of reduction, as well as the main housing in the versions with primary reduction are supplied without oil, and the relative lubrication is at customers account. LUBRIFICAZIONETutti i riduttori...

Quantit di olio in funzione della posizione Oil quantity according to the mounting lmenge in Abh֤ngigkeit von der Einbau- di montaggio position lage MOUNTING POSITIONSWe recommend paying the utmost attentionto the gearbox installation and operating position. For many positions, in fact, a specific lubri- cation of the gearbox and its bearings is re- quired, without which the normal service life of the gearbox will not be guaranteed. With- out any specific indications the gearbox will be supplied for the standard B3 installation. POSIZIONI DI MONTAGGIOSi consiglia di prestare la massima attenzionealla...

FLANGE IN USCITATutti i riduttori delle serie PL, PD possono esse-re equipaggiati, su richiesta, con flange in usci- ta di dimensioni unificate (flange B5). Si ֨ opta- to per la forma quadrata sulle grandezze 63 - 80 - 100 e per la forma circolare sulle grandez- ze 125 e 160. Si assume come standard la po- sizione destra guardando il riduttore dal lato dell'entrata nella posizione di montaggio B3. OUTPUT FLANGESAll PL and PD gearboxes can be equipped,upon request, with output B5 flanges. Square flanges have been provided on sizes 63 - 80 - 100 and round flanges are available on sizes 125 - 160....

BACKSTOP DEVICEOn request it is possible to have backstopmounted on the PL and PD line. Purpose of the backstop is to prevent the reversible motion, that is the fact that the gearbox might be operated through the output shaft by the resisting load so becoming driving load. The backstop device can be applied to the second end of the fast shaft. The irreversible bearing have been largely oversized according to the maximum torque allowed by each gearbox so that backstop devices are suitable for any reduction ratio. The direction of free rotation must be speci- fied when the order is placed. DISPOSITIVO...

CONDIZIONI GENERALI DI VENDIT A1) GARANZIA - La ns. garanzia ha la durata di anni unodalla data di fatturazione del prodotto. Essa limitata esclusivamente alla riparazione o alla sostituzione gra- tuita dei pezzi da noi riconosciuti come difettosi ed il re- clamo non potr mai dar luogo all蠒annullamento od alla riduzione delle ordinazioni da parte del committente e tan- to meno alla corresponsione di indennizzi di sorta da par- te ns. Il materiale da riparare in garanzia o comunque soggetto ad anomalie, sar da noi ritirato solo se ci per- verr in porto franco e sarࠠ reso al cliente in porto asse-...