ISO/DIS 21940-31:2012 en

Mechanische trillingen - Balanceren van rotors - Deel 31: Gevoeligheid van machines voor onbalans

  • Deze norm is niet direct leverbaar vanuit de NEN-shop.
    Wilt u dit product bestellen neemt u dan contact op met NEN-klantenservice: (015) 2 690 391 of

Over deze norm

Status Ontwerp
Aantal pagina's 25
Gepubliceerd op 22-10-2012
Taal Engels
This part of ISO 21940 defines methods for determining machine vibration sensitivity to unbalance and provides evaluation guidelines as a function of the proximity of relevant resonance speeds to the operating speed. This part of ISO 21940 is only concerned with once-per-revolution vibration caused by unbalance. It also makes recommendations on how to apply the numerical sensitivity values in some particular cases. It includes a classification system that can be applied to machines which is related to their susceptibility to a change in unbalance. Machines are classified into three types of susceptibility and five ranges of sensitivity. The sensitivity values should be used on simple machine systems, preferably with rotors having only one resonance speed over their entire operating speed range. The sensitivity values may also be used for machines that have more resonance speeds in their operating speed range if the resonance speeds are widely separated (e.g. by more than 20 %). The sensitivity values given are not intended to serve as acceptance specifications for any machine group but rather to give indications regarding how to avoid gross deficiencies as well as specifying exaggerated or unattainable requirements. They may also serve as a basis for more involved investigations (e.g. when in special cases a more exact determination of the required sensitivity is necessary). If due regard is paid to the values given, satisfactory running conditions can be expected in most cases. The consideration of the sensitivity values alone does not guarantee that a given magnitude of vibration in operating is not exceeded. Many other sources of vibration can occur which are not the subject of this part of ISO 21940.


ICS-code 21.120.40
Nederlandse titel Mechanische trillingen - Balanceren van rotors - Deel 31: Gevoeligheid van machines voor onbalans
Engelse titel Mechanical vibration - Rotor balancing - Part 31: Susceptibility and sensitivity of machines to unbalance
Vervangen door



Ga naar winkelwagen