Description: Critical speed (nk) is the rotational speed at which acting dynamic forces cause a machine component (e. g. shaft, rotor) to vibrate at its natural frequency (also referred to as intrinsic frequency, fi) and can even result in resonant vibrations throughout the entire machine and pump set; Name: crit. Speed
Description: Speed of rotation at which the frequency of vibration (or its multiples) corresponds to the rotor resonant (lateral or torsional) ; Name: Critical speed
Description: Nomenclature of goods according to the current regulation including the tariff and statistical nomenclature and the common Customs Tariff in the European Community. The structure of the number defines in the 1.-6. place the HS code of the WCO, in the 7.-8. the combined nomenclature of the European Community, in the 9.-10. the TARIC Code (Integrated Tariff of the European Communities) and in the 11th place a code for national purposes; Name: customs tariff number (TARIC)