All rotating components create some amount of vibration. When vibration becomes severe it can be very destructive when not corrected. Irregularities or asymmetries created either during the manufacturing process or due to wear are often the cause of vibration. They create a mismatch between the rotating axis established by the supporting shaft and bearings, and the axis of orbit around the actual center of mass of the rotating object. An unbalanced part tries to orbit about this axis of inertia while the shaft and bearings force the part to orbit about the different axis they dictate. This mismatch transmits the forces of vibration into the shaft and bearings, and their support structure causing stress and strain that these systems are not designed to handle.
Dynamic balancing is the process used to diagnose and correct the harmful vibration described above. We use purpose built dynamic balancing electronic instruments to aid in matching the axis of inertia about the center off mass, to the rotating axis established by the shaft and bearings.