scope:

This document is intended to apply specifically to system vibration and mechanical Balancing as related to fans and blowers. The principles presented, however, can be generally applied to many rotating components.

This document covers impellers while systems (see AMCA Standard 204 and ANSI Standard S2.19) are covered by Air Movement and Control Association International, Inc. (AMCA) publications.

Purpose. The purpose of this document is to provide fundamental information and to guide the industry on Balance and vibration technology as applied to impellers used in air moving systems. It includes terminology used and methods of Balancing practiced by the industry.

Intent. This document is intended for the guidance of the industry, including manufacturers, engineers, installers, contractors and users. 

Review and Amendment. This document is subject to review and amendment as technology advances.