Line balancing is an attempt to balance the input and output of each machine in a series of production processes, to minimize the idle time on all stations for a certain output level. The purpose of line balancing is to obtain a smooth production flow of WIP problems, delays in the process, repair time and so on, so as to achieve a high level of efficiency in terms of manpower, facilities and time required to produce / process the given input.

Now there are still a lot of line balancing practices based on traditional approaches that only after balancing the load of each station regardless of the WIP generated. It is quite impossible if the target optimal load flow gain of 100%, in the sense that each process has a perfect balance and have a perfect efficiency.

In this case if the average cycle time of each work station is greater [more slowly] than the takt time, this will create a long waiting time for customers. Conversely, if the average cycle time of each work station is smaller [faster) than the takt time, the inventory will accumulate over time.