What is ISO 21342 - Automotive belts and pulleys about?
ISO 21342 is an international standard on road vehicles that discusses belts & pulley drive. ISO 21342 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 BS ISO 21342:2019 history
2019BS ISO 21342:2019 Synchronous belt drives. Automotive belts and pulleys