What are the criteria for selection of end driven, belt driven, self-driven, vertical balancing machines?

In a dynamic balancing requirement, the accuracy of the component and the ease of balancing decide the most techno economical solution in selecting the balancing machine and drives. Mass produced components which are disk in shape, and small in size are invariably balanced on a vertical machine with built in correction equipment. High precision jobs requiring fine levels of balance like turbines, turbochargers, are balanced on belt driven machine. Components like fans and heavy rotors which need considerable power for acceleration and deceleration are driven through universal shafts on a balancing machine. Very high speed components like automobile turbochargers wherein the error induced by drive elements are not acceptable are balanced by using their own real life simulated power sources like compressed air. The advantage of the belt drive arrangement over universal shaft driven machine is the time to fix the adopters on the component is saved and errors due to adopters on the residual unbalance are avoided.