ANSI/ASA S2.75-2017/Part 1 Shaft Alignment Methodology, Part 1: General Principles, Methods, Practices, and Tolerances
In 2010, the Vibration Institute sought to establish a certification for shaft alignment technicians, similar to their certification for vibration technicians and analysts. Various alignment tool vendors and industry consultants had published tolerances for acceptable alignment of flexible couplings, but these varied among sources. Machinery manufacturers published various shaft alignment guides for their specific machines, but these varied widely in methodology and acceptable tolerances. Some industry specific standards did exist such as the API standard for machine installation, but these were not easily applied outside of those specific industries. The Vibration Institute then launched an effort in conjunction with the Acoustic Society of America, (ASA), to produce a shaft alignment standard that could be applied broadly across industries, and that would form a basis for the development of a certification for shaft alignment technicians. The standard presented here is the culmination of that effort.
Vogel, Eugene (2018). ANSI/ASA S2.75-2017/Part 1 Shaft Alignment Methodology, Part 1: General Principles, Methods, Practices, and Tolerances. Turbomachinery Laboratory, Texas A&M Engineering Experiment Station. Available electronically from