ABSTRACT
It has long been known that one of the principal causes of damage to rotating machinery can
be directly attributed to misalignment conditions. The primary cause of this damage can be
traced back to excessive forces impinging on the rotors, bearings, seals, and housings. As
there seems to be a direct link between how long the rotating machinery will operate and the
presence of undesirable forces on the machinery, it seems prudent to reduce or eliminate as
many of these forces as possible.
