GB/T 13924-2008Inspection code for accuracy of involute cylindrical gears (English PDF)

3 Terms and definitions

4 Symbols and codes

5 Inspection of pitch deviation

6 Inspection of tooth profile deviation

7 Inspection of helix deviation

8 Inspection of tangential composite deviation

9 Inspection of radial composite deviation

10 Inspection of radial runout

Foreword

This document was issued on 6 May 2008 by the State Administration for Market Regulation and the Standardization Administration of the People's Republic of China, and has been in force since 1 November 2008.

It replaces GB/T 13924-1992.

Classification: ICS 21.200, CCS J17.

About this edition

GB/T 13924-2008 is the current edition. It was issued on 6 May 2008 and has been in force since 1 November 2008, replacing GB/T 13924-1992.

GB/T 13924-1992 has been superseded: a specification that still cites it is citing a withdrawn edition.

The interval between issue and effect is the transition period. It exists so that producers, laboratories and buyers can requalify products, revise procedures and use up documentation before the new text becomes the one that applies. The date on this page is the official one from the record of the Standardization Administration.

Classification and status

GB/T 13924-2008 is classified under ICS 21.200, in the field of mechanical systems and components. ICS is the International Classification for Standards, the same scheme used by ISO and by the national bodies of most countries, which is what allows a Chinese standard to be placed beside its foreign counterparts on subject rather than on number.

Its Chinese Standard Classification code is CCS J17. CCS is the domestic scheme, a letter for the sector and two digits for the subject within it, and it is the code by which the standard is filed and searched in China.

The GB/T prefix marks a recommended national standard. It is not, in itself, law: it becomes binding when a contract names it, when a regulation or a mandatory standard refers to it, or when a producer declares conformity with it. In practice that covers most of the cases in which it will be read — a purchase specification, an inspection agreement or a certification scheme.