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Miki Pulley Europe AG
SFF Model datasheets

SFF Model datasheets

Product catalog summary

Overview: This datasheet provides comprehensive information on SERVOFLEX SFF SS-K-K metal disc couplings, which are used in mechanical systems to transmit torque while accommodating misalignment.

Specifications: The datasheet details specifications for each model, including:

Rated torque ranging from 100 N·m to 1000 N·m.
Consistent misalignment tolerances across models: parallel misalignment at 0.2 mm and angular misalignment at 1°.
Maximum rotation speeds between 10,000 min-1 and 18,000 min-1.
Torsional stiffness values specific to the flexible element.
Moment of inertia and mass specified for the maximum bore diameter.

Dimensions: Dimensions for each model include bore diameters (d1, d2), outer diameter (D), length (L), and other relevant measurements. The datasheet also specifies the number and size of tightening bolts and their required torque.

Ordering Information: Instructions for placing an order include the model number format and standard bore diameters available for each model, with a table indicating standard bore diameters for each model.

Additional Notes: The datasheet notes that higher rotation speeds are possible with balancing and provides information on countershaft tolerances and affixing methods.

Procedures: Instructions for ordering emphasize selecting the appropriate model based on bore diameter and torque requirements. The affixing method is a clamp type, with options for tapered shaft configurations.

Standards and Norms: Countershaft tolerances are specified with options such as h7, k6, m6, j6, and S: 35. Maximum rotation speed and torsional stiffness are critical for performance.

Recommendations: Recommendations include selecting the appropriate model based on required torque and bore diameter, and checking for special arrangements for mounting holes at the flange end.

Key Data from Tables: Tables provide detailed dimensions for each model, including bore diameters (d1 and d2), overall dimensions (D1, D2, L), and clamping bolt specifications. They also list nominal rated torque, misalignment tolerances, and maximum rotation speeds.

Critical Information:

Bore diameters range from 8 mm to 55 mm.
Nominal rated torque varies from 8N to 600N.
Material is specified as steel.
Models are designed for specific misalignment tolerances and maximum rotation speeds.
Special arrangements may be possible for mounting holes.

Catalog excerpts

METAL DISC COUPLINGS SERVOFLEX SFF SS-K-K – Datasheet SINGLE ELEMENT / CONICAL CLAMP HUB ■ Specifications Model Torsional stiffness [N·m/rad] • Higher rpm possible with balancing. • Torsional stiffness values given are measured values for the flexible element alone. • The moment of inertia and mass are specified for the maximum bore diameter. Detachment screw hole M2 H M1 Qty – M1 Tightening M2 Qty – Nominal dia. torque [N·m] Nominal dia.

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■ Specifications Standard bore diameter d1 • d2 [mm] Model Nominal diameter SFF-080SS-25KK-30KK-200N Size Type S: Single element

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METAL DISC COUPLINGS SERVOFLEX SFF SS-B-B – Datasheet SINGLE ELEMENT / CLAMPING TYPE ■ Specifications Model Torsional stiffness [N·m/rad] • Higher rpm possible with balancing. • Torsional stiffness values given are measured values for the flexible element alone. • The moment of inertia and mass are specified for the maximum bore diameter. ■ Dimensions L Clamping bolt M2

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■ Standard Bore Dimensions Standard bore diameter d1 • d2 [mm] Model Nominal diameter SFF-080SS-25BK-30BK-200N Size Type S: Single element

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METAL DISC COUPLINGS SERVOFLEX SFF DS-K-K – Datasheet DOUBLE ELEMENT / CONICAL CLAMP HUB ■ Specifications Model Torsional stiffness [N·m/rad] • Higher rpm possible with balancing. • Torsional stiffness values given are measured values for the flexible element alone. • The moment of inertia and mass are specified for the maximum bore diameter. Detachment screw hole M2 M1 • M2 LF LP S C d3 K H M1 Qty – M2 Qty – Tightening [mm] [mm] [mm] [mm] [mm] [mm] [mm] Nominal dia. Nominal dia. torque [N·m] 23.5

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■ Standard Bore Diameter Standard bore diameter d1 • d2 [mm] Model Nominal diameter SFF-080DS-25KK-30KK-200N Size Type D: Double element

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METAL DISC COUPLINGS SERVOFLEX SFF DS-B-B – Datasheet DOUBLE ELEMENT / CLAMPING TYPE ■ Specifications Model Torsional stiffness [N·m/rad] • Higher rpm possible with balancing. • Torsional stiffness values given are measured values for the flexible element alone. • The moment of inertia and mass are specified for the maximum bore diameter. M1 • M2 D L N1 • N2 LF LP S d3 K M1 • M2 Qty – Tightening [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] Nominal dia. torque [N·m]

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■ Standard Bore Diameter Standard bore diameter d1 • d2 [mm] Model Nominal diameter SFF-080DS-25BK-30BK-200N Size Type D: Double element

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Options Flange-Mounted One of the hubs is flange-shaped, allowing mounting on a DD motor, speed reducer, etc. ■ Specifications Misalignment Axial [mm] Torsional stiffness [N·m/rad] • Max. rotation speed does not take into account dynamic balance. • Torsional stiffness values given are measured values for the element alone. • The moment of inertia and mass are measured when d1 is the maximum bore diameter. • The figure in parentheses ( ) for the SFF-080DS is the value when d1 is ø38 mm.　 • Special arrangements may be possible for mounting holes at the flange end regarding bore diameter, number,...

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SFF Model datasheets

SFF Model datasheets

Catalog excerpts

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