ISO 21940-11:2016 PDF

Scope: This document establishes procedures and unbalance tolerances for balancing rotors with rigid behaviour. It specifies a) the magnitude ofthe permissible residual unbalance, b) the necessary number of correction planes, c) the allocation ofthe permissible residual unbalance to the tolerance planes, and d) howto accountforerrors in the balancingprocess. NOTE In ISO 21940-14, the assessment of balancing errors is considered in detail. Fundamentals of rotor balancingare contained in ISO 19499 which gives an introduction to balancing. This document does not cover the balancing of rotors with flexible behaviour. Procedures and tolerances for rotors with flexible behaviour are dealt with in ISO 21940-12 .

ISO 21940-11:2016 Referenced Document

ISO 14694:2003 Industrial fans - Specifications for balance quality and vibration levels
ISO 19499:2007 Mechanical vibration - Balancing - Guidance on the use and application of balancing standards
ISO 21940-12:2016 Mechanical vibration - Rotor balancing - Part 12: Procedures and tolerances for rotors with flexible behaviour
ISO 21940-14:2012 Mechanical vibration - Rotor balancing - Part 14: Procedures for assessing balance errors
ISO 21940-2 Mechanical vibration - Rotor balancing - Part 2: Vocabulary*， 2017-05-01 Update
ISO 21940-21:2012 Mechanical vibration - Rotor balancing - Part 21: Description and evaluation of balancing machines
ISO 21940-32:2012 Mechanical vibration - Rotor balancing - Part 32: Shaft and fitment key convention

2022 ISO 21940-11:2016/Amd 1:2022 Mechanical vibration — Rotor balancing — Part 11: Procedures and tolerances for rotors with rigid behaviour — Amendment 1
2016 ISO 21940-11:2016 Mechanical vibration - Rotor balancing - Part 11: Procedures and tolerances for rotors with rigid behaviour