13.2.2 Static Balancing (Two plane balancing)

We represent eccentricities and centrifugal forces as vectors, for which both magnitude and direction are necessary.

  

13.2.3 Couple unbalance

13.2.4 Dynamic unbalance

Figure 13.6 Static and couple unbalance

The balancing method described above is called the two-plane balancing . On the contrary as we have seen above, when a rotor is thin, the balancing is attained practically by adding a correction weight in one plane. This method is called the single-plane balancing . Practical balancing machines are made based on such principles. Basic principles of flexible rotor balancing will be described subsequently.