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IEC 60072-2-ed.2.0
Dimensions and output series for rotating electrical machines - Part 2: Frame numbers 355 to 1 000 and flange numbers 1 180 to 2 360
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STANDARD published on 5.9.2025
The information about the standard:
Designation standards: IEC 60072-2-ed.2.0
Publication date standards: 5.9.2025
SKU: NS-1240285
The number of pages: 28
Approximate weight : 84 g (0.19 lbs)
Country: International technical standard
Category: Technical standards IEC
The category - similar standards:
Annotation of standard text IEC 60072-2-ed.2.0 :
IEC 60072-2: 2025 covers the majority of rotating electrical machines for industrial purposes within the dimension range and output powers: - Foot-mounted: shaft heights: 355 mm to 1 000 mm. - Flange-mounted: pitch circle diameter of flange: 1 180 mm to 2 360 mm. It gives tables of fixing dimensions, shaft extension dimensions and their tolerances. However, the variety of construction and the wide range of applications for the large machines with shaft heights above 315 mm have led to the establishment of a relatively large number of values for the dimension in order to cover all possible constructions. Owing to this, the present part covers a wider range than IEC 60072-1 within which range values suitable for all designs or for a more detailed standardization can be chosen. NOTE The mounting dimensions given in this document for shaft heights 355 mm and 400 mm have been chosen from values given in IEC 60072-1. This second edition cancels and replaces the first edition published in 1990. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) complete revision on the basis of IEC 60072-1; b) additional tolerances and measurements for shafts and flanges (DIN SPEC 42955). IEC 60072-2:2025 couvre la majorite des machines electriques tournantes pour usages industriels dans la gamme des dimensions et les puissances: - Fixation par pattes: hauteurs daxes: 355 mm a 1 000 mm. - Fixation par bride: diametre du cercle primitif de la bride: 1 180 mm a 2 360 mm. Elle donne les tableaux des dimensions de fixation, des dimensions des bouts darbre et de leurs tolerances. Toutefois, la diversite des conceptions et la vaste gamme dapplications des grandes machines presentant des hauteurs daxes superieures a 315 mm ont conduit a letablissement dun nombre relativement important de valeurs de dimensions afin de couvrir toutes les conceptions possibles. De ce fait, la presente partie couvre une gamme de dimensions plus large que lIEC 60072-1, parmi lesquelles des valeurs appropriees peuvent etre choisies pour toutes les conceptions ou pour effectuer une normalisation plus detaillee. NOTE Les dimensions de fixation indiquees dans le present document pour des hauteurs daxes de 355 mm et 400 mm ont ete choisies a partir des valeurs fournies dans lIEC 60072-1. Cette deuxieme edition annule et remplace la premiere edition parue en 1990. Cette edition constitue une revision technique. Cette edition inclut les modifications techniques majeures suivantes par rapport a ledition precedente: a) revision complete par rapport a lIEC 60072-1; b) ajout de tolerances et de mesurages pour les arbres et les brides (DIN SPEC 42955).
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