We noticed you’re not on the correct regional site. Switch to our AMERICAS site for the best experience.
  • UNI ISO 21940-21 : 2013

    Current The latest, up-to-date edition.
    Add to Watchlist
    This Standard has been added successfully to your Watchlist
    Please visit My Watchlist to see all standards that you are watching.
    Please log in or to add this standard to your Watchlist.
    We could not add this standard to your Watchlist.
    Please retry or contact support for assistance.
    We could not add this standard to your Watchlist.
    Please retry or contact support for assistance.
    You have already added this standard to your Watchlist.
    Visit My Watchlist to view the full list.

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

    Available format(s): 

    Language(s): 

    Published date:  24-01-2013

    Publisher:  Ente Nazionale Italiano di Unificazione (UNI)

    Add to Watchlist

    Sorry this product is not available in your region.

    Add To Cart

    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)

    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
    • Access your standards online with a subscription

      Features

      • Simple online access to standards, technical information and regulations
      • Critical updates of standards and customisable alerts and notifications
      • Multi - user online standards collection: secure, flexibile and cost effective