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S7B

S7B

Product catalog summary

Technical Specifications:
The GS Series motors are available in various displacements ranging from 2000 to 4300 cc/rev. The bore sizes vary from 82 mm to 120 mm, with a consistent stroke of 76 mm across models. Specific torque values range from 31.94 to 68.41 Nm/bar. Continuous pressure is maintained at 250 bar, with peak pressures varying between 300 and 350 bar. Peak power is noted at 400 kW, with continuous speeds ranging from 300 to 425 rpm and maximum speeds from 450 to 650 rpm. The approximate weight of the unit is 291 kg, with a motor oil capacity of 21 liters. Maximum casing pressure is 3 bar continuous and 6 bar peak, with admissible temperatures between -20°C and +80°C.

Installation Notes:
Bolt torque settings are specified between 561.0 to 697.0 Nm for coarse and fine threads, with suggested bolt type being M20 12.9.

Shaft Options:
The catalogue provides options for splined, internally splined, and cylindrical shafts, with specific dimensions and standards detailed for each type.

Spline Data:
Detailed measurements for splines are provided, including diameters and tolerances according to DIN and BS standards.

Motor Bearing Lifetime:
Bearings lifetime is calculated according to ISO 281:1990, with permissible loads and lifetime in millions of revolutions (L10) provided. Graphs are included to assist in determining bearing lifetime without radial load.

Maximum Permitted Radial Load:
Graphs are provided to determine the maximum radial load on the motor shaft based on torque levels.

Order Codes:
The catalogue includes a detailed breakdown of order codes, specifying displacement, shaft options, bearings, other options, distributor types, and direction of rotation.

Catalog excerpts

GS SERIES TECHNICAL CATALOGUE CATALOGO TECNICO SERIE GS Cilindrata Bore Alesaggio Stroke Corsa Specific torque Coppia specifica Continuous pressure⁽¹⁾ Pressione in continuo⁽¹⁾ Peak pressure Pressione di picco Peak power ⁽²⁾ Potenza di picco ⁽²⁾ Continuous speed ⁽³⁾ Velocità in continuo ⁽³⁾ Maximum speed Velocità massima Approximate weight Peso approssimativo Maximum casing pressure Capacità olio motore Admissible temperatures Pressione massima in carcassa Temperature ammissibili massimo NOTES (1) Continuous or average working pressure should be chosen depending on the bearing lifetime. For lifetime calculation of the motor bearings, please contact the SAI Technical Department. (1) La pressione continua o media di lavoro va determinata in funzione della vita dei cuscinetti. Per un calcolo di vita dei cuscinetti del motore contattare l’Ufficio Tecnico SAI. (2) For higher peak power please contact the SAI Technical Department. (2) Per potenze di picco maggiori contattare l’Ufficio Tecnico SAI. (3) For higher continuous speed please contact the SAI Technical Department. (3) Per velocità in continuo maggiori contattare l’Ufficio Tecnico SAI. Bolt torque setting Coppia serraggio viti INSTALLATION NOTES coarse fine Suggested bolt type fine Viti suggerite

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GS SERIES TECHNICAL CATALOGUE CATALOGO TECNICOSERIEGS DIMENSIONAL DRAWINGS DISEGNI D'INGOMBRO SHAFT OPTIONS Splined 6/12" PITCH * Internally splined 80x3x25 q Cylindrical Calettato BS3550 Calettato interno DIN5480 Cilindrico s Preferred type / * Tipo prefer/to POWER THROUGH EFFICIENCY

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GS SERIES TECHNICAL CATALOGUE CATALOGO TECNICO SERIE GS SPLINE DATA MOTOR BEARING LIFETIME* VITA CUSCINETTI MOTORE* * without radial load on the output shaft * in assenza di carico radiale sull’albero di uscita The following graph is relative to GX bearings’ configuration. Il grafico seguente si riferisce alla configurazione di cuscinetti GX. UNIT DISPLACEMENT - CILINDRATA UNITÀ 2500 PISTON DIAMETER - DIAMETRO PISTONE (Ø mm) UNIT SPEED - VELOCITÀ DELL’UNITÀ (rpm) Select combination of pressure, displacement, speed and identify the bearing lifetime without radial load. Graph 1 on this page. Selezionare...

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GS SERIES TECHNICAL CATALOGUE CATALOGO TECNICO SERIE GS MAXIMUM PERMITTED RADIAL LOAD ON THE MOTOR SHAFT MASSIMO CARICO RADIALE PERMESSO ALL’ALBERO MOTORE Referred to motor type S7B 4300 8GX D250 Grafico n°2 Maximum radial load allowed on the shaft referred to the torque level Massimo carico radiale sostenibile dall’albero motore ottenibile dai diversi livelli di coppia How to use this diagrams Identify the maximum radial load allowed starting from the required torque. Use the graph 2 on this page. **Note: - please contact our tecnical department in order to define bearings’ life calculation...

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GS SERIES TECHNICAL CATALOGUE CATALOGO TECNICO SERIE GS ORDER CODES CODICI D’ORDINE * Preferred type / * Tipo preferito see table male 6/12” PITCH Z20 BS3550 (standard) = shaft seal protection = senza tenuta albero = protezione tenuta albero vedere catalogo distributori, D250 standard = 3 bar pressure relief valve see distributor catalogue, D250 standard = without shaft seal = cylindrical keyed spherical roller bearings = with long life (standard) maschio 6/12” PITCH Z20 BS3550 (standard)(standard) vedere tabella = distributor for high speed tachometer prearrange= ment Direction of rotation (viewed...

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