The LEMAG SHAFTPOWER is a permanent shaft power measuring system, which improves efficiency, protects from overload, protects from a breakdown, optimizes fuel consumption, controls the effect of energy saving devices and displays the actual active engine power output at any time. The shaft twist is measured by a defined distance on the shaft, using two highly accurate linear precision position encoders. The measured data is digitalized in the rotating unit and transmitted contact-free to the processor unit.

Product GMS ID: 


  • Touch screen operated
  • Contact-free sensors
  • Maintenance-free design
  • Easy to operate
  • Different measuring units
  • User-friendly zero calibration procedure
  • Display of actual shaft power, RPM, torque and average power
  • Comparison with reference propeller curve
  • RS-485, NMEA 0183 serial interface
  • Optional analogue outputs
  • Optional overload warning and alarm
  • Backlit touch-screen
  • Optional bridge display
  • Direction of rotation