Metal Plate Spring Coupling
Developed for servo motor applications, this ultra-high-rigidity metal leaf spring coupling offers exceptional properties: it is rigid in the torsional direction while remaining flexible in the shear, misalignment, and axial directions. The leaf springs that serve as the coupling elements were subjected to thorough analysis using the latest finite element method to achieve the most ideal shape possible.
List of Metal Plate Spring Couplings
SFS Model
Standard model. Made of steel, this coupling is suitable for a wide range of applications.
SFF model
Feed shaft model. Optimized for use in servo motor-driven feed shaft applications.
SFF model
How durable is Servoflex, and how does it age over time?
Servoflex couplings pass endurance tests above allowable torque, reaching 10 million cycles, the metal fatigue limit. Their all-metal design minimizes aging and maintains accurate long-term torque transmission.
When I install the coupling, the driven shaft develops runout. What is the cause?
Driven shaft runout caused by the coupling mainly results from shaft reaction force due to poor alignment. Servo-Flex couplings are assembled with high-precision jigs for excellent concentricity, minimizing shaft reaction force and runout.
Noise and vibration have occurred while using a metal plate spring coupling. Please advise on how to address this issue.
For servo motors, noise and vibration can be reduced by setting the resonance suppression filter to the natural frequency. For stepper motors, vibration can be suppressed by adjusting the operating speed or using a highly damping Step-Flex coupling.
Since the shaft is secured using a clamping mechanism, can sufficient torque be transmitted?
Our torque transmission tests use a sufficient safety factor, so the clamping connection will not slip at the allowable torque listed in the catalog. Keyway machining for the clamp hub is available. Please refer to the keyway machining option if required.