Revised Standard from Last Update.

NATIONAL FOREWORD

This Indian Standard (Part 1) (First Revision) which is identical with ISO 10889-1 : 2004 ‘Tool holders with cylindrical shank — Part 1: Cylindrical shank, location bore — Specification’ issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on recommendation of the Cutting Tools Sectional Committee and approval of the Production and General Engineering Division Council.

This standard was first published in 1985 by taking considerable assistance from VDI 3425 (Part 2) : 1972. The first revision of this standard has been undertaken to align it with the latest version of ISO 10889-1 : 2004.

The major changes in this revision are as follows:

a) Dimensions of cylindrical shanks have been technically updated;

b) New sizes have been added; and

c) Material, designation, design and marking requirements have been added.

This Indian Standard is published in eight parts. The other parts in this series are:

Part 2 Type A, shanks for tool holders of special designs

Part 3 Type B with rectangular radial seat

Part 4 Type C with rectangular axial seat

Part 5 Type D with more than one rectangular seat

Part 6 Type E with cylindrical seat

Part 7 Type F with taper seat

Part 8 Type Z, accessories

The text of ISO Standard has been approved as suitable for publication as an Indian Standard without deviations. Certain terminologies and conventions are, however, not identical to those used in Indian Standards. Attention is particularly drawn to the following:

a) Wherever the words ‘International Standard’ appear referring to this standard, they should be read as ‘Indian Standard’.

b) Comma (,) has been used as a decimal marker, while in Indian Standards, the current practice is to use a point (.) as the decimal marker.