Reaffirmed 2019

(Superseding IS 15248 : 2002)

NATIONAL FOREWORD

This Indian Standard (Part 3) which is identical with ISO 3442-3 : 2007 ‘Machine tools - Dimensions and geometric tests for self-centring chucks with two-piece jaws - Part 3: Power-operated chucks with serrated jaws’ issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on the recommendation of the Machine Tools, Machine Tool Elements and Holding Devices Sectional Committee and approval of the Production and General Engineering Division Council.

This standard was first published as IS 15248 : 2002 by adopting ISO 3442 : 1991 ‘Self-centring chucks for machine tools with two-piece jaws (tongue and groove type) - Sizes for interchangeability and acceptance test specifications’. The Committee has considered revising IS 15248 : 2002 into three parts, since ISO 3442 : 1991 has been revised into three parts. Accordingly, after publication of this standard, IS 15248 : 2002 is treated as withdrawn.

The text of ISO Standard has been approved as suitable for publication as an Indian Standard without deviations. Certain terminology 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.