ISO 21342:2019

Synchronous belt drives — Automotive belts and pulleys ISO 21342:2019

Publication date:   Apr 30, 2019

General information

95.60 Close of voting   Dec 3, 2024

ISO

ISO/TC 41/SC 4 Synchronous belt drives

International Standard

21.220.10   Belt drives and their components | 43.060.10   Engine block and internal components

Buying

Published

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Scope

This document specifies the characteristics of synchronous endless belts and their related pulleys for use in automotive applications such as engine camshaft drives.
The characteristics include:
— belt pitch spacing;
— belt nominal tooth dimensions;
— belt width and width tolerance;
— belt pitch length and pitch length tolerance;
— pulley groove dimensions and tolerances;
— pulley tolerances and quality specifications.
Test methods for measuring belt pitch length and lateral runout are also included.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 9010:1997

WITHDRAWN
ISO 9011:1997

NOW

PUBLISHED
ISO 21342:2019
95.60 Close of voting
Dec 3, 2024