SIST EN IEC 60072-1:2022
(Main)Rotating electrical machines - Dimensions and output series - Part 1: Frame numbers 56 to 400 and flange numbers 55 to 1080 (IEC 60072-1:2022)
Rotating electrical machines - Dimensions and output series - Part 1: Frame numbers 56 to 400 and flange numbers 55 to 1080 (IEC 60072-1:2022)
This document is applicable for the majority of rotating electrical machines for industrial purposes within the dimension range and output powers:
Foot- mounted: shaft heights: 56mm to 400mm
Flange- mounted: pitch circle diameter of flange: 55mm to 1080mm
It specifies the fixing dimension, shaft extension dimensions and the assignment of output powers and frame sizes.
Abmessungen und Leistungsreihen für drehende elektrische Maschinen - Teil 1: Baugrößen 56 bis 400 und Flanschgrößen 55 bis 1080 (IEC 60072-1:2022)
Machines électriques tournantes - Dimensions et séries de puissances - Partie 1: Désignation des carcasses entre 56 et 400 et des brides entre 55 et 1080 (IEC 60072-1:2022)
IEC 60072-1:2022 s'applique à la majorité des machines électriques tournantes pour usages industriels qui relèvent de la plage de dimensions et des puissances concernées:
- Fixation par pattes: hauteur d'axe; entre 56 mm et 400 mm.
- Fixation par bride: diamètre du cercle primitif de la bride: entre 55 mm et 1 080 mm.
Cette septième édition annule et remplace la sixième édition parue en 1991. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a. modification du titre de la série;
b. révision complète par rapport à l'EN 50347;
c. ajout de l'article Correspondance entre les dimensions de carcasses, les bouts d'arbre, les puissances assignées et les désignations de brides;
d. ajout de tolérances et de mesurages pour les arbres;
e. modification de l'Annexe A, notamment ajout de désignations de carcasses supplémentaires et de la correspondance entre les dimensions de carcasses et la puissance assignée.
Električni rotacijski stroji - Dimenzije in izhodne serije - 1. del: Velikosti ohišij od 56 do 400 in velikosti prirobnic od 55 do 1080 (IEC 60072-1:2022)
Ta dokument se uporablja za večino električnih rotacijskih strojev za industrijske namene v naslednjem dimenzijskem območju in z izhodno močjo:
Nožna izvedba: višine gredi: 56–400 mm
Prirobnična izvedba: premer delilnega kroga prirobnice: 55–1080 mm
Določa mere pritrditve, mere podaljška gredi ter dodelitev izhodnih moči in velikosti ohišij.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN IEC 60072-1:2022
01-oktober-2022
Električni rotacijski stroji - Dimenzije in izhodne serije - 1. del: Velikosti ohišij od
56 do 400 in velikosti prirobnic od 55 do 1080 (IEC 60072-1:2022)
Rotating electrical machines - Dimensions and output series - Part 1: Frame numbers 56
to 400 and flange numbers 55 to 1080 (IEC 60072-1:2022)
Abmessungen und Leistungsreihen für drehende elektrische Maschinen - Teil 1:
Baugrößen 56 bis 400 und Flanschgrößen 55 bis 1080 (IEC 60072-1:2022)
Machines électriques tournantes - Dimensions et séries de puissances - Partie 1:
Désignation des carcasses entre 56 et 400 et des brides entre 55 et 1080 (IEC 60072-
1:2022)
Ta slovenski standard je istoveten z: EN IEC 60072-1:2022
ICS:
29.160.01 Rotacijski stroji na splošno Rotating machinery in
general
SIST EN IEC 60072-1:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN IEC 60072-1:2022
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SIST EN IEC 60072-1:2022
EUROPEAN STANDARD EN IEC 60072-1
NORME EUROPÉENNE
EUROPÄISCHE NORM May 2022
ICS 29.160.01 Supersedes EN 50347:2001
English Version
Rotating electrical machines - Dimensions and output series -
Part 1: Frame numbers 56 to 400 and flange numbers 55 to
1080
(IEC 60072-1:2022)
Machines électriques tournantes - Dimensions et séries de Abmessungen und Leistungsreihen für drehende
puissances - Partie 1: Désignation des carcasses entre 56 elektrische Maschinen - Teil 1: Baugrößen 56 bis 400 und
et 400 et des brides entre 55 et 1080 Flanschgrößen 55 bis 1080
(IEC 60072-1:2022) (IEC 60072-1:2022)
This European Standard was approved by CENELEC on 2022-05-04. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 60072-1:2022 E
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SIST EN IEC 60072-1:2022
EN IEC 60072-1:2022 (E)
European foreword
The text of document 2/2059/CDV, future edition 7 of IEC 60072-1, prepared by IEC/TC 2 "Rotating
machinery" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
EN IEC 60072-1:2022.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2023-02-04
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2025-05-04
document have to be withdrawn
This document supersedes EN 50347:2001 and all of its amendments and corrigenda (if any).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 60072-1:2022 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards
indicated:
IEC 60034-7 NOTE Harmonized as EN IEC 60034-7
IEC 60079-1 NOTE Harmonized as EN 60079-1
IEC 60079-7 NOTE Harmonized as EN 60079-7
2
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EN IEC 60072-1:2022 (E)
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
NOTE 1 Where an International Publication has been modified by common modifications, indicated by (mod), the
relevant EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available
here: www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60079-0 - Explosive atmospheres - Part 0: EN IEC 60079-0 -
Equipment - General requirements
ISO 128-3 2020 Technical product documentation (TPD) - EN ISO 128-3 2020
General principles of representation - Part
3: Views, sections and cuts
ISO 273 - Fasteners - Clearance holes for bolts and EN 20273 -
screws
ISO 286 series Geometrical product specifications (GPS) - EN ISO 286 series
ISO code system for tolerances on linear
sizes
ISO 1101 - Geometrical product specifications (GPS) - EN ISO 1101 -
Geometrical tolerancing - Tolerances of
form, orientation, location and run-out
ISO 2768-1 - General tolerances - Part 1: Tolerances for - -
linear and angular dimensions without
individual tolerance indications
3
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SIST EN IEC 60072-1:2022
IEC 60072-1
®
Edition 7.0 2022-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Rotating electrical machines – Dimensions and output series –
Part 1: Frame numbers 56 to 400 and flange numbers 55 to 1080
Machines électriques tournantes –Dimensions et séries de puissances –
Partie 1: Désignation des carcasses entre 56 et 400 et des brides
entre 55 et 1080
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.160.01 ISBN 978-2-8322-1093-0
Warning! Make sure that you obtained this publication from an authorized distributor.
Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
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CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Symbols . 7
4.1 Letter symbols for dimensions . 7
4.2 Dimensional sketches . 9
5 Designations of machines . 10
5.1 Frame sizes . 10
5.2 Flange numbers . 10
5.3 Shaft extension . 10
6 Location of the terminal box . 10
6.1 Machines with feet . 10
6.2 Machines without feet . 10
7 Fixing dimensions and tolerances . 11
7.1 General . 11
7.2 Foot-mounted machines . 11
7.3 Flange-mounted machines . 12
8 Shaft end dimensions and tolerances . 13
8.1 Shaft end dimenions . 13
8.2 Parallelism of shaft to foot face . 16
8.3 Parallelism of keyway to shaft axis . 16
8.4 Lateral displacement of keyway . 16
9 Methods of measurement . 16
9.1 General . 16
9.2 Shaft extensions run-out . 17
9.3 Concentricity of spigot and shaft . 17
9.4 Perpendicularity of mounting face of flange to shaft . 17
9.5 Parallelism of shaft to foot face . 18
9.6 Parallelism of keyway to shaft axis . 19
9.7 Lateral displacement of keyway . 19
10 Preferred rated output values . 19
11 Relationships between frame size, shaft extensions, rated outputs and flange
numbers . 21
Annex A (informative) Additional relationships for frame sizes and output ratings . 24
Annex B (informative) Additional recommended letters and dimensions . 25
Bibliography . 26
Figure 1 – Dimensional sketches . 9
Figure 2 – Illustration of the measurement of shaft extensions run-out . 17
Figure 3 – Illustration of the measurement of concentricity . 17
Figure 4 – Illustration of the measurement of perpendicularity . 18
Figure 5 – Illustration of the measurement of parallelism . 18
Figure 6 – Illustration of parallelism of keyway . 19
Figure 7 – Illustration of lateral displacement of keyway . 19
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IEC 60072-1:2022 © IEC 2022 – 3 –
Table 1 – Dimensions for machines with shaft height from 56 mm to 400 mm . 11
Table 2 – Dimensions and tolerances for flanges with pitch circle diameters from 55
mm to 1 080 mm . 12
Table 3 – Dimensions and tolerances for shaft ends . 14
Table 4 – Tolerance for parallelism shaft to foot face . 16
Table 5 – Tolerance for parallelism of keyway to shaft axis . 16
Table 6 – Preferred rated output values . 20
Table 7 – Totally enclosed fan-cooled induction motors (IC41) with squirrel-cage rotor . 21
Table 8 – Totally enclosed fan cooled induction motors (IC41) with slip ring rotor . 22
Table 9 – Ventilated induction motors (IC01) with squirrel-cage rotor . 23
Table 10 – Ventilated induction motors (IC01) with slip ring rotor . 23
Table A.1 – Relationships between frame size and rated output for 50 Hz increased
safety "eb" . 24
Table B.1 – Additional frame letters and B dimensions in mm . 25
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INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ROTATING ELECTRICAL MACHINES –
DIMENSIONS AND OUTPUT SERIES –
Part 1: Frame numbers 56 to 400 and flange
numbers 55 to 1080
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their
preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence between
any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60072-1 has been prepared by IEC technical committee 2: Rotating
machinery.
This seventh edition cancels and replaces the sixth edition published in 1991. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) modification of the series title;
b) complete revision on the basis of EN 50347;
c) integration of the relationships between frame size, shaft extensions, rated outputs and
flange numbers;
d) additional tolerances and measurements for shafts;
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IEC 60072-1:2022 © IEC 2022 – 5 –
e) modification of Annex A with additional frame numbers and relationships between frame
size and rated power.
The text of this International Standard is based on the following documents:
Draft Report on voting
2/2059/CDV 2/2082/RVC
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
A list of all parts in the IEC 60072 series, published under the general title Rotating electrical
machines – Dimensions and output series, can be found on the IEC website.
Future documents in this series will carry the new general title as cited above. Titles of existing
documents in this series will be updated at the time of the next edition.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/standardsdev/publications.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
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ROTATING ELECTRICAL MACHINES –
DIMENSIONS AND OUTPUT SERIES –
Part 1: Frame numbers 56 to 400 and flange
numbers 55 to 1080
1 Scope
This part of IEC 60072 is applicable for the majority of rotating electrical machines for industrial
purposes within the dimension range and output powers:
Foot- mounted: shaft heights: 56 mm to 400 mm.
Flange- mounted: pitch circle diameter of flange: 55 mm to 1 080 mm.
It specifies the fixing dimensions, shaft extension dimensions and the assignment of output
powers and frame sizes.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies.
For undated references, the latest edition of the referenced document (including any
amendments) applies.
IEC 60079-0, Explosive atmospheres – Part 0: Equipment – Generel requirements
ISO 128-3:2020, Technical product documentation (TPD) – General principles of representation
– Part 3: Views, sections and cuts
ISO 273, Fasteners – Clearance holes for bolts and screws
ISO 286 (all parts), Geometrical product specifications (GPS) – ISO code system for tolerances
on linear sizes
ISO 1101, Geometrical product specifications (GPS) – Geometrical tolerancing – Tolerances of
form, orientation, location and run-out
ISO 2768-1, General tolerances – Part 1: Tolerances for linear and angular dimensions without
individual tolerance indications
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminology databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
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4 Symbols
4.1 Letter symbols for dimensions
The dimensional sketches in Figure 1 illustrate the symbols defined below. Mandatory
dimensions are marked with *.
*A distance between centre-lines of fixing holes (end view)
AA width of the end of the feet (end view)
AB overall dimension across the feet (end view)
AC maximum width (envelope size) of the machine (e.g. fan cover; excluded are terminal
box and feet)
AC’ maximum height (envelope size) of the machine
AD distance from the centre-line of the machine to extreme outside of the terminal box or
other most salient part mounted on the side of the machine
*B distance between the centre-lines of the fixing holes (side view)
BA length of the feet (drive end side; side view)
BB overall dimension across the feet (side view)
BC distance from the shoulder on the shaft at D-end to the beginning of the foot (side view)
BD length of the feet (non-drive end side; side view)
*C distance from the shoulder on the shaft at D-end to the centre-line of the mounting holes
in the nearest feet
CA distance from the shoulder on the shaft at N-end to the centre-line of the mounting holes
in the nearest feet
*CB rounding fillet at the shoulder on the shaft at D-end
CC rounding fillet at the shoulder on the shaft at N-end
*D diameter of the shaft extension at D-end
DA diameter of the shaft extension at N-end
*DB thread-size in the centre hole at D-end
DC thread-size in the centre hole at N-end
*E length of the shaft extension from the shoulder at D-end
EA length of the shaft extension from the shoulder at N-end
*EB length of the key at D-end
EC length of the key at N-end
*ED distance from the shoulder on the shaft at D-end to the nearest end of the keyway
EE distance from the shoulder on the shaft at N-end to the nearest end of the keyway
*F width of the keyway or key of the shaft extension at D-end
FA width of the keyway or key of the shaft extension at N-end
*FB rounding fillet in the bottom of the keyway at D-end
FC rounding fillet in the bottom of the keyway at N-end
G distance from the bottom of the keyway to the opposite surface of the shaft extension at
D-end
*GA distance from the top of the key to the opposite surface of the shaft extension at D-end
GB distance from the bottom of the keyway to the opposite surface of the shaft extension at
N-end
GC distance from the top of the key to the opposite surface of the shaft extension at N-end
*GD height of the key of the shaft extension at D-end
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*GE depth of the keyway at the crown of the shaft extension at D-end
GF height of the key of the shaft extension at N-end
GH depth of the keyway at the crown of the shaft extension at N-end
*H distance form the centre-line of the shaft to the bottom of the feet (basic dimension)
HA thickness of the feet
HC distance from the top of the horizontal machine to the bottom of the feet
HD distance from the top of the lifting eye, the terminal box or other most salient part
mounted on the top of the machine to the bottom of the feet
*K diameter of the holes or width of the slots (end view) in the feet of the machine
KA in case of long holes: width of the slots (side view) in the feet
L overall length of the machine with a single shaft extension
LA thickness of the flange
LB distance from the mounting surface of the flange to the end of the machine
LC overall length of the machine when there is a shaft extension at N-end
LR distance from the end of the machine to the ring bolt
*M pitch circle diameter of the fixing holes
*N diameter of the spigot
*P outside diameter of the flange, or in the case of a non-circular outline twice the maximum
radial dimension
*R distance from the mounting surface of the flange to the shoulder on the shaft
*S diameter of the fixing holes in the mounting flange or nominal diameter of thread
SR thread diameter of ring bolt
*T depth of the spigot
NOTE The definition of D-end and N-end of a motor is given in IEC 60034-7.
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4.2 Dimensional sketches
Key
1) FF - flange with through holes; access to back; FT - flange with thread; no access to back
2) This ISO symbol indicates the projection method used (ISO 128-3:2020)
Figure 1 – Dimensional sketches
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5 Designations of machines
5.1 Frame sizes
Electrical machines may be designated by the frame size. The frame sizes are defined as the
distance from the centre line of the shaft to the bottom of the feet (H dimension). The dimensions
for H and the correlation to the fixing dimensions (A, B, C and K) are given in Table 1.
Recommended letters for frame sizes:
S short length frame size;
M middle length frame size;
L long length frame size.
Additional recommended frame number letters are given in Annex B, Table B.1.
NOTE The frame sizes are also applicable for non feet motors.
5.2 Flange numbers
The flange numbers are defined as the pitch circle diameter M. The dimensions for M and the
correlation to the fixing dimensions (N, P, R, S and T) are given in Table 2. The location of the
holes in the mounting flange are shown in Figure 1.
Recommended letters for flange numbers:
FF flange with through holes;
FT flange with thread.
5.3 Shaft extension
The designation of the shaft is defined with the diameter of the shaft extension D. The
dimensions for D and the correlation to the relevant dimensions (e.g. E, Key) are given in
Table 3.
6 Location of the terminal box
6.1 Machines with feet
The terminal box on a motor should be situated with its centre-line within a sector ranging from
the top to 10° below the horizontal centre-line of the motor on the right hand side, when looking
at the D-end of the motor.
It is recommended that unless the terminal box is on the top, motors be so constructed that the
terminal box may be located on the left-hand side by the manufacturer, if requested by the user
at the time when the motor is ordered.
NOTE Provision is preferably made so as to enable the cable entry to the terminal box to be in any one of the four
directions at right angles.
6.2 Machines without feet
No recommendation.
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7 Fixing dimensions and tolerances
7.1 General
Shaft extension, flange numbers, foot dimension and output allocation to frame size are given
in Clause 11, Table 7 through Table 10.
7.2 Foot-mounted machines
A, B, C and K dimensions shall be selected from Table 1.
Table 1 – Dimensions for machines with shaft height from 56 mm to 400 mm
d d d b c
Frame H A B C K Bolt or
a
number screw
Nominal
mm mm mm mm
Nominal Maximum
deviation
mm mm
56M 56 −0,5 90 71 36 5,8 M5
63M 63 −0,5 100 80 40 7 M6
71M 71 −0,5 112 90 45 7 M6
80M 80 −0,5 125 100 50 10 M8
90S 90 −0,5 140 100 56 10 M8
90L 90 −0,5 140 125 56 10 M8
100L 100 −0,5 160 140 63 12 M10
(112S) 112 −0,5 190 114 70 12 M10
112M 112 −0,5 190 140 70 12 M10
(112L) 112 −0,5 190 159 70 12 M10
132S 132 −0,5 216 140 89 12 M10
132M 132 −0,5 216 178 89 12 M10
(132L) 132 −0,5 216 203 89 12 M10
(160S) 160 −0,5 254 178 108 14,5 M12
160M 160 −0
...
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