Full Description

ISO 21342:2019 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.