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.

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

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

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

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

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

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]

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

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,...