ISO 2250:2017

Finishing reamers for Morse and metric tapers, with cylindrical shanks and Morse taper shanks

ISO 2250:2017 specifies the dimensions of cylindrical shank socket reamers and taper shank socket reamers manufactured to produce self-holding taper sockets for self-holding taper shanks of the following designations, and which are in accordance with ISO 296: - metric tapers no. 4 and no. 6; - Morse tapers no. 0 to no. 6 inclusive. NOTE Unless otherwise stated, these reamers are right-hand cutting.

Alésoirs de finition pour cônes Morse et métrique, à queue cylindrique et à queue cône Morse

ISO 2250:2017 spécifie les dimensions des alésoirs pour cônes Morse et métrique, à queue cylindrique et à queue cône Morse, qui sont destinés à l'alésage des cônes suivants, conformément à l'ISO 296: - cônes métriques n° 4 et n° 6; - cônes Morse n° 0 à n° 6. NOTE Sauf indication contraire, le sens de coupe est à droite.

General Information

• Status: Published
• Publication Date: 08-Feb-2017
• ICS: 25.100.30 - Drills, countersinks, reamers
• Technical Committee: ISO/TC 29/SC 9 - Tools with defined cutting edges, holding tools, cutting items, adaptive items and interfaces
• Drafting Committee: ISO/TC 29/SC 9 - Tools with defined cutting edges, holding tools, cutting items, adaptive items and interfaces
• Current Stage: 9093 - International Standard confirmed
• Start Date: 23-Dec-2022
• Completion Date: 13-Dec-2025

Relations

• Revises: ISO 2250:2009 - Finishing reamers for Morse and metric tapers, with cylindrical shanks and Morse taper shanks
• Effective Date: 05-Nov-2015

Overview

ISO 2250:2017 is an international standard developed by the International Organization for Standardization (ISO) that specifies the dimensions and design requirements for finishing reamers used with Morse and metric tapers. These reamers feature either cylindrical shanks or Morse taper shanks and are manufactured to produce self-holding taper sockets compatible with the self-holding taper shanks outlined in ISO 296.

The standard applies specifically to:

• Metric tapers No. 4 and No. 6
• Morse tapers No. 0 to No. 6 inclusive

The cutting direction of these reamers is generally right-hand cutting unless otherwise stated. ISO 2250:2017 ensures dimensional consistency and interchangeability in the manufacturing and tooling processes involving these reamers.

Key Topics

• Scope and Application: Defines dimensional requirements for cylindrical shank socket reamers and taper shank socket reamers used for machining self-holding taper sockets.
• Dimensional Specifications:
  • Detailed measurements for cylindrical shank reamers including total length, diameters, and tolerances following ISO 237 for shanks.
  • Dimensions for Morse taper shank reamers per ISO 296 requirements.
• Conformance Requirements:
  • All tool shanks and driven square dimensions must meet ISO 237 specifications.
  • Morse taper reamer shanks must comply with ISO 296 for compatibility.
• Tolerance Classes: Integration of tolerance grades such as h9 for critical diameters ensuring precision fit and function.
• Technical Illustrations and Tables: Including clear figures and tables that specify lengths, diameters, and taper conicity ensuring reproducible manufacturing outcomes.
• Relation to ISO 13399: The standard includes an informative annex linking designations used in ISO 2250 with the tool data representation system described in ISO 13399, facilitating digital tool management and data exchange.

Applications

ISO 2250:2017 finishing reamers are crucial tools in precision machining and toolmaking, used primarily to bore self-holding taper sockets matching Morse and metric tapered shanks. Key applications include:

• Machine Tool Manufacturing: For producing accurately tapered sockets on spindles and tool holders enabling reliable fastening of cutting tools.
• Maintenance and Repair of Machine Tools: Ensuring replacement reamers meet exact standard dimensions for repairing tapered connections.
• Cutting Tool Production: Manufacturing reamers for use in finishing taper bores integral to the assembly of tooling systems.
• Precision Engineering: Providing standardized tooling for industries requiring high-precision tapered fittings such as automotive, aerospace, and industrial machinery sectors.
• CNC Machining: Used for final finishing of taper bores to achieve optimal concentricity and surface finish for self-holding tapered components.

By adhering to ISO 2250:2017, manufacturers and engineers ensure optimal compatibility, functionality, and interchangeability of reamers and tapered sockets across diverse tooling systems globally.

Related Standards

ISO 2250:2017 references and aligns closely with several related standards for seamless integration and conformity, including:

• ISO 237: Specifies dimensions and tolerances for cylindrical shank diameters and driving squares for rotating tools-critical for defining tool shank specifications in ISO 2250.
• ISO 296: Covers the design and dimensions of low-taper machine tool taper shanks, which directly correspond to the taper specifications outlined for Morse and metric tapers in ISO 2250.
• ISO 13399: A comprehensive system for the representation of cutting tool data, which ISO 2250 relates to through its informative annex, improving tooling data communication and digital interoperability.
• ISO/IEC Directives, Part 1 and 2: These guide the drafting and publication of ISO standards, ensuring clear, consistent, and authoritative documentation.

Together, these standards facilitate the manufacturing, selection, and use of finishing reamers that comply with international quality and compatibility benchmarks.

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Keywords: ISO 2250:2017, finishing reamers, Morse tapers, metric tapers, cylindrical shanks, Morse taper shanks, self-holding taper sockets, ISO 296, ISO 237, ISO 13399, taper reamers dimensions, machine tool tooling standards, precision reaming, taper socket manufacturing.

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 2250
Third edition
2017-02
Finishing reamers for Morse and
metric tapers, with cylindrical shanks
and Morse taper shanks
Alésoirs de finition pour cônes Morse et métrique, à queue cylindrique
et à queue cône Morse
Reference number
©
ISO 2017
© ISO 2017, Published in Switzerland
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
the requester.
ISO copyright office
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. [phone]
Fax [phone]
[e-mail]
www.iso.org
ii © ISO 2017 – All rights reserved

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Dimensions . 1
4.1 General . 1
4.2 Cylindrical shank reamers . 1
4.3 Morse taper shank reamers . 2
Annex A (informative) Relationship between designations in this document and the
ISO 13399 series . 4
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
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This document was prepared b
...

NORME ISO
INTERNATIONALE 2250
Troisième édition
2017-02
Alésoirs de finition pour cônes Morse
et métrique, à queue cylindrique et à
queue cône Morse
Finishing reamers for Morse and metric tapers, with cylindrical
shanks and Morse taper shanks
Numéro de référence
©
ISO 2017
DOCUMENT PROTÉGÉ PAR COPYRIGHT
© ISO 2017, Publié en Suisse
Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite ni utilisée
sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie, l’affichage sur
l’internet ou sur un Intranet, sans autorisation écrite préalable. Les demandes d’autorisation peuvent être adressées à l’ISO à
l’adresse ci-après ou au comité membre de l’ISO dans le pays du demandeur.
ISO copyright office
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. [phone]
Fax [phone]
[e-mail]
www.iso.org
ii © ISO 2017 – Tous droits réservés

Sommaire Page
Avant-propos .iv
1 Domaine d’application . 1
2 Références normatives . 1
3 Termes et définitions . 1
4 Dimensions . 1
4.1 Généralités . 1
4.2 Alésoirs à queue cylindrique. 2
4.3 Alésoirs à queue cône Morse . 3
Annexe A (informative) Relation entre les désignations du présent document et la série
ISO 13399 . 4
Avant-propos
L’ISO (Organisation internationale de normalisation) est une fédération mondiale d’organismes
nationaux de normalisation (comités membres de l’ISO). L’élaboration des Normes internationales est
en général confiée aux comités techniques de l’ISO. Chaque comité membre intéressé par une étude
a le droit de faire partie du comité technique créé à cet effet. Les organisations internationales,
gouvernementales et non gouvernementales, en liaison avec l’ISO participent également aux travaux.
L’ISO collabore étroitement avec la Commission électrotechnique internationale (IEC) en ce qui
concerne la normalisation électrotechnique.
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décrites dans les Directives ISO/IEC, Partie 1. Il convient, en particulier de prendre note des différents
critères d’approbation requis pour les différents types de documents ISO. Le présent document a été
rédigé conformément aux règles de rédaction données dans les Directives ISO/IEC, Partie 2 (voir www
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l’élaboration du document sont indiqués dans l’Introduction et/ou dans la liste des déclarations de
brevets reçues par l’ISO (voir www .iso .org/ brevets).
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Pour une explication de la signification des termes et expressions spécifiques de l’ISO liés à
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