What is the Difference Between Dynamic Balancing and Static Balancing?

Static balancing and dynamic balancing are two different methods for correcting a part's unbalance, and their fundamental difference is based on whether the part is stationary or in motion. Static balancing ensures the part's weight is evenly distributed around its axis of rotation while it's at rest. This process is done by placing the part on a knife edge or bearings, with the goal of making the center of gravity coincide with the geometric center. Static balancing can be sufficient for disc-shaped parts that are short in length relative to their diameter and rotate at slow speeds. This single-plane balancing prevents the heavy spot of the part from settling at the bottom when it's at rest, but it doesn't correct dynamic unbalances that occur during rotation.

On the other hand, dynamic balancing aims to eliminate the vibrations and forces a part generates while rotating. In a high-speed rotating part, an unbalance in mass distribution creates unbalanced forces (centrifugal force and couple force) in at least two different planes. These forces cause the part to wobble and vibrate excessively during rotation. Dynamic balancing requires corrections to be made in at least two different planes to eliminate these forces. For this reason, dynamic balancing is critically important for high-speed parts like spindles, shafts, and long rotors. At MBS Balans Sanayi, we perform these complex balancing procedures with the highest precision using our dynamic balancing machines, ensuring parts have a long and efficient service life.