FSMM-L Series

These heavy duty, stainless steel couplings are capable of accommodating misalignments for parallel, angular and axial motion, or a combination of all three motions. Their longer lengths and high torque capacity make them ideal for light duty power transmission applications for reliable, repeatable performance.


  • Stainless Steel construction
  • Zero backlash
  • High torque
  • Resistant to oil and corrosive environments
  • Low moment of inertia
  • Wide selection of bore sizes

FSCM-L Series

The FSCM-L series are versatile, flexible, stainless steel couplings featuring a clamp-style end piece for positive shaft connection in lower torque applications such as servomotors and encoders with bore diameters ranging from 4 mm to 16 mm. Their balanced design and longer length, up to 56 mm or 2 inches, deliver higher RPM capabilities and reduce vibration without sacrificing parallel, axial and angular misalignment.


  • Superior parallel offset misalignment capability
  • High torsional stiffness
  • Corrosion resistant
  • Zero backlash
  • Wide selection of bore sizes
  • Cryogenically treated for enhanced durability and hardness
Applications Advantages of Servometer Bellows Couplings
Encoders Extremely low elastic windup
Servos Zero backlash
Actuators Zero cyclic speed variation during 360° rotation
Robotics Minimal side loading
CNC Machine Tools Complete customization of bellows and end pieces available
Other Motion Control Instruments Lead time of 1-2 weeks on standard sizes. Contact us for stock sizes.