Miki Pulley’s latest model SFF Coupling is ideal for large ball screw applications on high performance machining centers. These couplings have a robust design providing high torque and high RPM operation.  

The SFF Coupling offers exceptional torsional stiffness and strength. These couplings have rugged designed steel hubs with black oxide finish. This proven Miki Pulley coupling design assures accurate machining center shaft rotation with precise control. The coupling’s flexible element gap dampens conductive heat transfer from motor to output shaft. Also important, the coupling provides limited shaft misalignment to alleviate premature system bearing wear.

The coupling’s aerodynamic profile decreases noise while optimizing performance at high speeds. Simple yet reliable, SFF couplings are available in single and double element configurations. Bores can be arranged with clamp, taper-lock or keyed styles for specific application requirements. Basic SFF coupling specifications are:

? Maximum RPM: 18,000

? Maximum allowable torque: 221.27 ft-lbs (800 Nm)

? Bore size range: 0.709” – 3.15 918 mm-80 mm)

? Backlash: Zero

? Ambient operating temperature:  -40 C - 120 C (-40 F - 248 F)