Inertia Dampers

A stepper motor operated at its natural frequency may experience excessive settling time, vibration and acoustic noise. A Ferrofluidic damper relies on ferrofluid to absorb the motion energy by a shearing effect which produces a torque that opposes the unwanted oscillatory motion. A Ferrofluidic damper is hermetically sealed and has a non-magnetic housing which attaches to the motor shaft. Inside the housing is an inertial mass which levitates on Ferrotec's ferrofluid, thus eliminating the need for bearings to support the mass.

Inertia damper diagram
Inertia damper image

A Ferrofluidics damper offers reliable damping and accurate performance with no losses in speed or accuracy, and no reduction in torque. Other performance benefits include:

  • increased positional accuracy
  • reduced settling time
  • reduced torsional oscillations

A Ferrofluidic inertia damper is easily attached to the motor shaft and has no maintenance requirements. It can be custom tuned to your system for optimum results. Typical applications include X-Y-Z Plotters, Printers, Optical Scanners, Robotics and Milling Machines.

A range of sizes and damping coefficients is available.