ISO 21342:2019Published

Synchronous belt drives — Automotive belts and pulleys

Transmissions synchrones par courroies — Courroies pour la construction automobile

Abstract / 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

Replaces

ISO 9010:1997WithdrawnSynchronous belt drives — Automotive beltsInternational Standard · Published 10 Apr 1997 · ISO/TC 41/SC 4ISO 9011:1997WithdrawnSynchronous belt drives — Automotive pulleysInternational Standard · Published 10 Apr 1997 · ISO/TC 41/SC 4