Mill rotor vibration

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Using the Balanset-1A Instrument

Equipment Preparation

  • accelerometers, laser rpm sensor, mounting stand, software application, and additional tools.
  • Connect the device to your PC using the USB interface and confirm the software installation.

Sensor Installation

  • Fix the accelerometers securely to the machine’s structure in locations where vibrations are most prominent, ideally near the bearings.
  • Aim the optical rpm sensor at the rotating shaft and apply a reflective strip to the shaft for phase angle data acquisition.

Launching the Software

  • Launch the Balanset software on your computer.
  • Select the appropriate balancing mode: single-plane or two-plane, depending on the rotor type and your specific requirements.


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  • Bring the rotor to its normal operating rotational frequency.
  • The application will acquire data on vibration magnitude, rotational velocity, and phase angle to determine the initial imbalance state.

Attaching the Trial Weight


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  • Halt the rotation and mount a test weight at a designated position on the rotor, with the weight’s value entered into the software (usually in grams).
  • Run the rotor again, allowing the software to measure the effects of the trial weight on vibration and phase.


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Computing the Compensating Weight

  • Using the acquired measurements, the program automatically determines the required corrective weight’s mass and angular position.
  • The results of the calculation are shown both numerically and visually through charts and graphs.


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Attaching the Corrective Mass

  • Mount the calculated corrective weight onto the rotor at the specified location and angle.
  • Periodic checks can be performed to ensure the balancing procedure is effectively reducing the vibration.


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Final Check and Balance Confirmation

  • Once the corrective weight is in place, restart the rotor and measure the remaining vibration amplitude.
  • The balancing procedure is finished if the remaining vibration is within the permissible limits specified in ISO 1940.
  • Should the vibration still be excessive, repeat the balancing steps, making further adjustments to the corrective weight as needed.

Report Generation

  • The balancing results are saved in the software’s archive. You can create and print a report containing vibration data, correction weight mass, and its installation angle.

Final Recommendations

  • Verify the secure attachment of all balancing weights and measurement sensors.
  • Confirm that the rotor spins freely and quietly, without any unusual sounds or vibrations.
  • In cases where the rotor is integrated into a more complex system, ensure the correct operation and interaction of all related components.

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