Solution approach: Dynamic balancing with PAK

Unlike static balancing, the dynamic method takes into account imbalances along the entire axis of rotation. PAK supports this process:
 

• Any number of balancing levels (ideal for long/complex rotors)
• Freely positionable sensors (e.g. acceleration of transducers, strain gauges)
• Flexible operating conditions (stationary or in a system network)

The analysis is based on the measurement of the first order of the rotational speed (amplitude & phase). The influence coefficients are calculated using defined test weights at different balancing levels – the basis for the exact determination and placement of the balancing weights.

Balancing process sequence
 

• Place sensors at the rotor bearing points (drive and output sides)
• Perform initial balancing run (constant speed or ramp-up)
• Perform calibration runs with defined test weights per balancing level
• Calculate influence coefficients (amplitude/phase shift)
• Attach balancing weights (countervector to the imbalance)
• Perform a control run to check the balancing quality
• Optional: Fine-tune by repeating with new parameters

Efficiency feature: PAK allows the reuse of influence coefficients for rotors of identical design (“one-shot” method).

Results and customer benefits

“With the PAK application, we can balance turbines quickly and accurately—even with complex geometries and changing test environments.” 
 

✅ Extended service life of bearings and rotors

✅ Reduction in noise emissions

✅ Increased energy efficiency

✅ Compliance with balancing quality specifications in accordance with ISO/ANSI 

✅ Vibration reduction