In how many places, do we need to do compensation on our work piece?

In a dynamic balancing operation, you need minimum two planes and two places for proper balancing. In many, situations, the compensation will not be sufficient at two places. So, the compensation weight is spread out in more places along the same plane or at more planes at fixed points as in crank shafts. The users are advised to refer to the component drawing or the end user for more details. In components like fans, having segmented rotors, the unbalance compensation will be resolved into vectors where in there is an availability of metal/location to execute the unbalance compensation. So the number of places, unbalance can be compensated is only component specific.