Table of Contents

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Capacity and performance data of the
   balancing machine
5 Machine features
6 Minimum achievable residual unbalance
7 Production efficiency
8 Performance qualifying factors
9 Installation requirements
10 Proving rotors and test masses
11 Verification tests
Annex A (informative) - Information provided by
        the user to the balancing machine manufacturer
Annex B (informative) - URR limit diagrams
Annex C (informative) - Shafts of outboard proving
        rotors type C
Annex D (informative) - Modifications of proving rotors
        prepared in accordance with ISO 2953:1985
        to this part of ISO 21940
Bibliography

Abstract

Describes requirements for evaluating the performance of machines for balancing rotating components by the following tests: a) test for minimum achievable residual unbalance, U[mar] test; b) test for unbalance reduction ratio, URR test; c) test for couple unbalance interference on single-plane machines; d) compensator test.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	International Organization for Standardization
Pages
ISBN
Committee	TC 108
Supersedes	ISO/FDIS 21940-21 : 60.00 (2012)