SFH Model
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Metal Disc Couplings SFH(S) Types Single Element Type Specification (SFH- □ S) Pilot Bore/Key or Set Screw Misalignment Torsional stiffness [N·m/rad] * Max. rotation speed does not take into account dynamic balance. * The moment of inertia and mass are measured for the maximum bore diameter. Dimensions (SFH- □ S) Pilot Bore/Key or Set Screw F * Pilot bores are to be drilled into the part. See the standard hole-drilling standards of P.86 for information on bore drilling. * The nominal diameter of the reamer bolt is equal to the quantity minus the nominal diameter of the screw threads times the nominal length. Bore diameter: d1 (Small diameter) - d2 (Large diameter) Blank: Pilot bore Type: S Single element Bore specifications 　Blank : Compliant with the old JIS standards (class 2) E9 H: Compliant with JIS

Specification (SFH- □ S- □ K- □ K) Frictional Coupling Torsional stiffness [N·m/rad] SPEED CHANGERS CLUTCHES & BRAKES * Max. rotation speed does not take into account dynamic balance. * The moment of inertia and mass in the table are measured for the maximum bore diameter. LINEAR SHAFT DRIVES TORQUE LIMITERS ROSTA Dimensions (SFH- □ S- □ K- □ K) Frictional Coupling SERIES Metal Disc SERVOFLEX High-rigidity Couplings Link Couplings SCHMIDT Dual Rubber Couplings * The nominal diameters of each bolt and tap are equal to the quantity minus the nominal diameter of the screw threads times the...

Metal Disc Couplings SFH(G) Types Double Element/Floating Shaft Type Specification (SFH- □ G) Pilot Bore/Key or Set Screw Misalignment Torsional stiffness [N·m/rad] * Max. rotation speed does not take into account dynamic balance. * The moment of inertia and mass are measured for the maximum bore diameter. Dimensions (SFH- □ G) Pilot Bore/Key or Set Screw F * Pilot bores are to be drilled into the part. See the standard hole-drilling standards of P.86 for information on bore drilling. * If you require a product with an LS dimension that exceeds those above, contact Miki Pulley with your...

Specification (SFH- □ G- □ K- □ K) Frictional Coupling Torsional stiffness [N·m/rad] SPEED CHANGERS * Max. rotation speed does not take into account dynamic balance. * The moment of inertia and mass in the table are measured for the maximum bore diameter. CLUTCHES & BRAKES INVERTERS LINEAR SHAFT DRIVES TORQUE LIMITERS Dimensions (SFH- □ G- □ K- □ K) Frictional Coupling SERIES Metal Disc Couplings High-rigidity SERVOFLEX Couplings SCHMIDT Dual Rubber 70 SPRFLEX Plastic Bellows Couplings * The bore diameters marked with ● or numbers are supported as standard bore diameter. * Bore diameters...

Metal Disc Couplings Standard Hole-Drilling Standards ■ SFH(S) Models compliant with the old JIS standard (class 2) JIS B 1301 1959 Models compliant with the new JIS standard (H9) JIS B 1301 1996 Models compliant with the motor standard JIS C 4210 2001 Keyway height [T1･T2] Nominal bore diameter Nominal bore diameter Nominal bore diameter Bore diameter

Items Checked for Design Purposes ■ Axial displacement (S) You should note the following to prevent any problems. In addition, restrict the dimension between flange hub faces (S in the (1) Always be careful of parallel, angular, and axial misalignment. diagram) within the allowable error range for axial displacement with CLUTCHES & BRAKES respect to a reference value. Note that the tolerance values were SPEED CHANGERS ■ Special Items to Take Note of (2) Always tighten bolts with the specified torque. calculated based on the assumption that both the level of parallel misalignment and angular...

Metal Disc Couplings SFH Models Items Checked for Design Purposes ■ Mounting (3) Pull out three of the pressure bolts loosened in step (2), insert them into detachment screw holes at three locations on the sleeve, and tighten them alternately, a little at a time. The link between the flange hub and shaft will be released. (6) Keep the width of the dimension between flange faces (S dimension in the diagram) within the allowable error range for axial misalignment with respect to the reference value. Note that the tolerance values were calculated based on the assumption that both the level of...

089 ■ Points to Consider Regarding the Feed Screw System Gain adjustment in feed screw systems using a servo motor may cause the (1) Find the torque, Ta, applied to the coupling using the output servo motor to oscillate. If oscillation occurs, adjustment will need to be capacity, P, of the driver and the usage rotation speed, n. made such as by using the filter function or other electrical control system to resolve this issue. To handle issues such as oscillation, it will be necessary to take into account the torsional natural frequency for the system overall during the design stage,...