IS 5933 : 2024/ISO 199 : 2023 Rolling Bearings - Thrust Bearings - Geometrical Product Specifications (GPS) and Tolerance Values
NATIONAL FOREWORD
This Indian Standard (Fifth Revision) which is identical to ISO 199 : 2023 'Rolling bearings - Thrust bearings - Geometrical product specification (GPS) and tolerance values' issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on the recommendation of the Bearing Sectional Committee and approval of the Production and General Engineering Division Council.
This standard was first published in 1970 and subsequently revised in 1993, 2002, 2015 and 2019. First revision was identical to ISO 199 : 1979. Second revision was identical to ISO 199 : 1997. Third revision was identical to ISO 199 : 2005. Fourth revision of this standard was identical to ISO 199 : 2014 'Rolling bearings - Thrust bearings - Geometrical product specification (GPS) and tolerance values', issued by the International Organization for Standardization (ISO). In this revision of this standard has been undertaken to align it with the latest version of ISO 199.
The major changes incorporated in this revision are as follows:
a) Symbols have been revised and the symbol list amended; and
b) Annexes A, B, C and D have been deleted.
The text of ISO standard has been approved as suitable for publication as an Indian Standard without deviations. Certain 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'; and
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.