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  • UNI ISO 21940-21 : 2013

    Current The latest, up-to-date edition.

    MECHANICAL VIBRATION - ROTOR BALANCING - PART 21: DESCRIPTION AND EVALUATION OF BALANCING MACHINES

    Available format(s): 

    Language(s): 

    Published date:  23-01-2013

    Publisher:  Ente Nazionale Italiano di Unificazione (UNI)

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    Table of Contents - (Show below) - (Hide below)

    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 - (Show below) - (Hide below)

    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 - (Show below) - (Hide below)

    Committee CT 2
    Document Type Standard
    Publisher Ente Nazionale Italiano di Unificazione (UNI)
    Status Current

    Standards Referencing This Book - (Show below) - (Hide below)

    ISO 2953:1999 Mechanical vibration Balancing machines Description and evaluation
    SAE ARP 4162 : 2017 BALANCING MACHINE PROVING ROTORS
    ISO 1940-1:2003 Mechanical vibration Balance quality requirements for rotors in a constant (rigid) state Part 1: Specification and verification of balance tolerances
    ISO 1925:2001 Mechanical vibration Balancing Vocabulary
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