ISO 2940-1:1974
(Main)Milling cutters mounted on centring arbors having a 7/24 taper - Fitting dimensions - Centring arbors
Milling cutters mounted on centring arbors having a 7/24 taper - Fitting dimensions - Centring arbors
Applies both to cutters with inserted teeth, made from high speed steel or with brazed carbide tips, and to cutters equipped with indexable carbide tips. Concerns milling cutters, arbor located, to be used with a well-defined spindle nose having a 7/24 taper and milling cutter, arbor located, to be used bith spindle nose No. 50 and spindle nose No. 60 having a 7/24 taper. The general fitting dimensions are in accordance with ISO 297.
Fraises à surfacer et à surfacer et dresser, à montage direct sur nez de broches à conicité 7/24 — Dimensions d'interchangeabilité — Mandrins de centrage
Ločnozobi stožčasti zobniki - Frezalne glave za zobčanje na stožčastem trnu z ujemom 7/24 - Razsežnosti ujema - Sredilni trn
General Information
- Status
- Published
- Publication Date
- 31-Mar-1974
- Current Stage
- 9093 - International Standard confirmed
- Start Date
- 27-Mar-2023
- Completion Date
- 13-Dec-2025
Overview
ISO 2940-1:1974 specifies the fitting dimensions and centring-arbor details for milling cutters mounted on centring arbors with a 7/24 taper. The standard covers both single‑purpose and dual‑purpose mountings and applies to a wide range of cutter types - inserted‑tooth cutters (high‑speed steel or brazed carbide), and cutters with indexable carbide tips. Its purpose is to ensure interchangeability and reliable centring of milling cutters on defined spindle noses (including spindle nose No. 50 and No. 60 having a 7/24 taper).
Key topics and requirements
- Scope: Applies to arbor‑located milling cutters with inserted teeth or indexable carbide tips; supports single‑purpose and dual‑purpose mounting configurations.
- 7/24 taper interface: Defines the mating relationship between centring arbors and spindle noses in accordance with ISO/R 297 (7/24 tapers for tool shanks).
- Centring arbor dimensions: Specifies dimensions and arrangements to facilitate accurate centring of the cutter on the spindle nose (spigot shape left to manufacturer’s choice where not critical).
- Fitting and locating features:
- Use of locating holes (typically four) for mechanical location;
- Fits and tolerances such as H7 / H12 for relevant diameters, and a positional tolerance parameter for hole axes (see ISO/R 1101 for geometric tolerances).
- Tables and diagrams: The standard includes dimension tables and sectional diagrams that define nominal sizes, maximum/minimum limits and positional tolerance zones for different cutter diameters.
- Interchangeability rules: General fitting dimensions follow ISO/R 297 and its addendum to ensure compatibility across equipment and suppliers.
Applications and users
Who uses ISO 2940-1:
- Tool and cutting‑tool manufacturers specifying arbor and cutter bores
- Machine tool designers and spindle manufacturers ensuring interface compatibility
- Production and tooling engineers specifying replacement cutters and arbors
- Quality, inspection and maintenance teams verifying dimensional conformity Practical uses:
- Designing and manufacturing centring arbors and mating cutter bores
- Specifying replacement or retrofit milling cutters for spindles with 7/24 taper
- Establishing inspection criteria and acceptance limits for cutter‑to‑arbor assemblies
- Ensuring interchangeability between suppliers and machine tool fleets
Related standards
- ISO/R 297 - 7/24 tapers for tool shanks (general taper dimensions)
- ISO/R 1101 - Tolerances of form and position (geometric tolerances)
- ISO 2940-2 / ISO 2940/11 (related parts) - details for specific cutter types (inserted‑tooth cutters)
Keywords: ISO 2940-1, milling cutters, centring arbors, 7/24 taper, fitting dimensions, spindle nose No.50, spindle nose No.60, interchangeability, tooling standards.
ISO 2940-1:1974 - Milling cutters mounted on centring arbors having a 7/24 taper -- Fitting dimensions -- Centring arbors
ISO 2940-1:1974 - Fraises a surfacer et a surfacer et dresser, a montage direct sur nez de broches a conicité 7/24 -- Dimensions d'interchangeabilité -- Mandrins de centrage
Frequently Asked Questions
ISO 2940-1:1974 is a standard published by the International Organization for Standardization (ISO). Its full title is "Milling cutters mounted on centring arbors having a 7/24 taper - Fitting dimensions - Centring arbors". This standard covers: Applies both to cutters with inserted teeth, made from high speed steel or with brazed carbide tips, and to cutters equipped with indexable carbide tips. Concerns milling cutters, arbor located, to be used with a well-defined spindle nose having a 7/24 taper and milling cutter, arbor located, to be used bith spindle nose No. 50 and spindle nose No. 60 having a 7/24 taper. The general fitting dimensions are in accordance with ISO 297.
Applies both to cutters with inserted teeth, made from high speed steel or with brazed carbide tips, and to cutters equipped with indexable carbide tips. Concerns milling cutters, arbor located, to be used with a well-defined spindle nose having a 7/24 taper and milling cutter, arbor located, to be used bith spindle nose No. 50 and spindle nose No. 60 having a 7/24 taper. The general fitting dimensions are in accordance with ISO 297.
ISO 2940-1:1974 is classified under the following ICS (International Classification for Standards) categories: 25.100.20 - Milling tools. The ICS classification helps identify the subject area and facilitates finding related standards.
ISO 2940-1:1974 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
01-avgust-1998
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XMHPRP5D]VHåQRVWLXMHPD6UHGLOQLWUQ
Milling cutters mounted on centring arbors having a 7/24 taper -- Fitting dimensions --
Centring arbors
Fraises à surfacer et à surfacer et dresser, à montage direct sur nez de broches à
conicité 7/24 -- Dimensions d'interchangeabilité -- Mandrins de centrage
Ta slovenski standard je istoveten z: ISO 2940-1:1974
ICS:
25.100.20 Orodja za frezanje Milling tools
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
INTERNATIONAL STANDARD
294oh
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION 44EX~YHAPO~HA~ OPTAHH3ALWfi I-IO CTAHAAPTH’3ALViH l ORGANISATION INTERNATIONALE DE NORMALISATION
Milling Cutters mounted on centring arbors having a 7/24
taper - Fitting dimensions - Centring arbors
Fraises 5 surfacer et 5 surfacer et dresser, 5 mon tage direct sur nez de broches 6 conicite 7/24 - Dimensions
d’in terchangeabilitk - Mandrins de ten trage
First edition - 1974-04-01
UDC 621.914.2
Ref. No. ISO 2940/1-1974 (E)
Descriptors : tools, milling Cutters, mandrels, dimensions, interchangeability.
Price based on 3 pages
FOREWORD
ISO (the International Organization for Standardization) is a worldwide federation
of national Standards institutes (ISO Member Bodies). The work of developing
International Standards is carried out through ISO Technical Committees. Every
Member Body interested in a subject for which a Technical Committee has been set
up has the right to be represented on that Committee. International organizations,
governmental and non-governmental, in Iiaison with ISO, also take part in the work.
Draft International Standards adopted by the Technical Committees are circulated
to the Member Bodies for approval before their acceptance as International
Standards by the ISO Council.
International Standard ISO 2940/1 was drawn up by Technical Committee
ISO/TC 29, Sma// tools, and circulated to the Member Bodies in October 1972.
lt has been approved by the Member Bodies of the following countries :
Belgium
Israel Thailand
Czechoslovakia I taly Turkey
Egypt, Arab Rep. of Poland U.S.A.
Germany Romania U.S.S. R.
Hungary South Africa, Rep. of
India
Switzerland
The Member Bodies of the following countries expressed disapproval of the
technical grounds :
document on
Austria
France
Japan
Sweden
United Kingdom
@ International Organkation for Standardization, 1974 l
Printed in Switzerland
INTERNATIONAL STANDARD ISO 2940/1-1974 (E)
Milling Cutters mounted on centring arbors having a 7/24
taper - Fitting dimensions - Centring arbors
1 SCOPE AND FIELD OF APPLICATION
This International Standard lays down the fitting dimensions for milling Cutters mounted on centring arbors having a
7/24
...
INTERNATIONAL STANDARD
294oh
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION 44EX~YHAPO~HA~ OPTAHH3ALWfi I-IO CTAHAAPTH’3ALViH l ORGANISATION INTERNATIONALE DE NORMALISATION
Milling Cutters mounted on centring arbors having a 7/24
taper - Fitting dimensions - Centring arbors
Fraises 5 surfacer et 5 surfacer et dresser, 5 mon tage direct sur nez de broches 6 conicite 7/24 - Dimensions
d’in terchangeabilitk - Mandrins de ten trage
First edition - 1974-04-01
UDC 621.914.2
Ref. No. ISO 2940/1-1974 (E)
Descriptors : tools, milling Cutters, mandrels, dimensions, interchangeability.
Price based on 3 pages
FOREWORD
ISO (the International Organization for Standardization) is a worldwide federation
of national Standards institutes (ISO Member Bodies). The work of developing
International Standards is carried out through ISO Technical Committees. Every
Member Body interested in a subject for which a Technical Committee has been set
up has the right to be represented on that Committee. International organizations,
governmental and non-governmental, in Iiaison with ISO, also take part in the work.
Draft International Standards adopted by the Technical Committees are circulated
to the Member Bodies for approval before their acceptance as International
Standards by the ISO Council.
International Standard ISO 2940/1 was drawn up by Technical Committee
ISO/TC 29, Sma// tools, and circulated to the Member Bodies in October 1972.
lt has been approved by the Member Bodies of the following countries :
Belgium
Israel Thailand
Czechoslovakia I taly Turkey
Egypt, Arab Rep. of Poland U.S.A.
Germany Romania U.S.S. R.
Hungary South Africa, Rep. of
India
Switzerland
The Member Bodies of the following countries expressed disapproval of the
technical grounds :
document on
Austria
France
Japan
Sweden
United Kingdom
@ International Organkation for Standardization, 1974 l
Printed in Switzerland
INTERNATIONAL STANDARD ISO 2940/1-1974 (E)
Milling Cutters mounted on centring arbors having a 7/24
taper - Fitting dimensions - Centring arbors
1 SCOPE AND FIELD OF APPLICATION
This International Standard lays down the fitting dimensions for milling Cutters mounted on centring arbors having a
7/24 taper, and the dimensions of centring arbors intended to facilitate centring of the Cutter on the spindle nose.
This International Standard applies both to Cutters with inserted teeth, made from high Speed steel or with brazed carbide
tips, and to Cutters equipped with indexable carbide tips.
lt concerns :
- firstly, the so-called “Sin
...
NORME INTERNATIONALE
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION l EXCJJYHAPO~HAR OPI-AHH3AJJHJl I-I0 CTAH~APTW3ALJH5-i .ORGANISATION INTERNATIONALE DE NORMALISATION
Fraises à surfacer .et à surfacer et dresser, à montage direct sur
nez de broches à tonicité 7/24 - Dimensions
d’interchangeabilité - Mandrins de centrage
Milling cutters mounted on centring arbors having a 7/24 taper - Fitting dimensions - Centring arbors
Première édition - 1974-04-01
Réf. No : ISO 2940/1-1974 (F)
CDU 621.914.2
dimension, interchangeabilité.
Descripteurs : outil, fraise mécanique, mandrin,
Prix basé sur 3 pages
AVANT-PROPOS
L’ISO (Organisation Internationale de Normalisation) est une fédération mondiale
d’organismes nationaux de normalisation (Comités Membres ISO). L’élaboration de
Normes Internationales est confiée aux Comités Techniques ISO. Chaque Comité
Membre intéressé par une étude a le droit de faire partie du Comité Technique
Les organisations internationales, gouvernementales et non
correspondant.
gouvernementales, en liaison avec I’ISO, participent également aux travaux.
Les Projets de Normes Internationales adoptés par les Comités Techniques sont
soumis aux Comités Membres pour approbation, avant leur acceptation comme
Normes Internationales par le Conseil de I’ISO.
La Norme Internationale ISO 2940/1 a été établie par le Comité Technique
ISO/TC 29, Petit outi//age, et soumise aux Comités Membres en octobre 1972.
Elle a été approuvée par les Comités Membres des pays suivants :
Afrique du Sud, Rép. d’ Israël Thaïlande
Allemagne Italie Turquie
Belgique Pologne U.R.S.S.
Egypte, Rép. arabe d’ Roumanie U.S.A.
Hongrie Suisse
Inde Tchécoslovaquie
Les Comités Membres des pays suivants ont désapprouvé le document pour des
raisons techniques :
Autriche
France
Japon
Royaume-Uni
Suède
0 Organisation Internationale de Normalisation, 1974 l
I mprimé en Suisse
ISO 2940/1-1974 (F)
NORME INTERNATIONALE
raises à surfacer et à surfacer et dresser, à montage direct sur
nez de broches à tonicité 7/24 - Dimensions
‘interchangeabilité - Mandrins de centrage
1 OBJET ET DOMAINE D’APPLICATION
La présente Norme Internationale fixe les dimensions d’interchangeabilité de la fixation des fraises à surfacer et à surfacer et
dresser, à montage direct sur nez de broches à tonicité 7/24, ainsi que les caractéristiques dimensionnelles des mandrins de
centrage destinés à faciliter le centrage de la fraise sur le nez de broche.
Elle s’applique aussi bien aux fraises équipées de lames amovibles en acier rapide ou avec plaquettes brasées en carbures
métalliques, qu’aux frais
...
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