Glossary Term
Dynamic Balancing
Dynamic balancing is the correction of unbalance in a rotating component by considering both the amount of unbalance and where it sits along the rotor. ISO 1940-1 describes two-plane dynamic balancing as the balancing method used when a rotor cannot be treated as a simple disc-shaped item suitable for single-plane balancing. In yacht and superyacht work, the term is used for rotors, impellers, fans, motor armatures, turbocharger parts, and other rotating assemblies where vibration control matters.
The process aims to reduce the forces generated as the part spins, which lowers vibration, bearing load, noise, and wear on adjacent components. On yachts, the benefit is often felt in comfort and reliability as much as in machinery life. A rotor can look geometrically correct when static and still create unwanted vibration once speed rises, which is why dynamic balancing has a different role from basic weight matching or visual truing. The accepted balance quality depends on the machine type and its duty.
Dynamic balancing usually appears during overhaul, after repair, after part replacement, or when vibration data points toward a rotating source. It often overlaps with machinery and equipment work and verification testing, because balance quality only has real value when it is connected back to operating speed, support condition, and the yacht’s installed machinery geometry.