GB/T 1243-2024: Short-pitch transmission precision roller and bush chains, attachments and associated chain sprockets

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Scope

This document specifies the technical requirements for short pitch precision roller and
bush chains and sprockets, which are suitable for mechanical transmission and similar
applications, including dimensions, tolerances, length measurements, pre-tensioning,
minimum tensile strength, minimum dynamic load strength.
Although Chapter 5 applies to sprockets for bicycles and motorcycles, this document
does not apply to bicycle and motorcycle chains, which are specified in ISO 9633 and
ISO 10190, respectively.

Basic Data

Standard ID	GB/T 1243-2024 (GB/T1243-2024)
Description (Translated English)	Short-pitch transmission precision roller and bush chains, attachments and associated chain sprockets
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	J18
Classification of International Standard	21.220.30
Word Count Estimation	34,368
Date of Issue	2024-05-28
Date of Implementation	2024-12-01
Issuing agency(ies)	State Administration for Market Regulation, China National Standardization Administration