ABSTRACT
Let us consider a shaft whose diameter is 0.970", which is still within the specification limits (0.96"–1.04") but on the loose side. This shaft will fit loosely with a bearing or sleeve (unless matched), increasing the probability of customer complaint and possibly failing prematurely. This example illustrates that even though the allowable range of diameters is 0.96"–1.04", the manufacturer must strive to keep the diameters as close as possible to 1”, which becomes the target value.
