NA 001

DIN/VDI Standards Committee Acoustics, Noise Control and Vibration Engineering


Mechanical vibration - Rotor balancing - Part 21: Description and evaluation of balancing machines - Supplement 1: Quality capability statistics for assessment of the unbalance measuring process


This document secifies procedures and criteria for assessment the capability of unbalance measuring processes, taking into account the vector character of the unbalance value on rotors with constant behaviour in one or two planes. The capability indices described in this document indicate whether or to what extent a measuring system is suitable for checking specified unbalance tolerance values. Depending on the task, reference rotors or production rotors are used.



Planned document number

DIN ISO 21940-21 Beiblatt 1

Project number


Responsible national committee

NA 001-03-06 AA - Balancing and balancing machines 


Felix Schwäricke

Saatwinkler Damm 42/43
13627 Berlin

Tel.: +49 30 2601-2125
Fax: +49 30 2601-42125

Send message to contact