Following assembly, an initial load is applied to the chain, which is called a pre-load. This loading approximates the recommended maximum loading in service and is done to align the various chain components such as pins, bushings, and link plates. The benefit of pre-loading is that it greatly helps eliminate the initial elongation often found in “lesser” chains. Elimination of this initial elongation can increase the chain’s useable service life, and therefore pre-loading is very important. Diamond Chain Company pre-loads every Standard and Heavy Series chain it manufacturers.