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ISO 9981:2020

Belt drives — Pulleys and V-ribbed belts for the automotive industry — PK profile: Dimensions

Publication date:   Jun 12, 2020

General information

90.93   Standard confirmed   Nov 21, 2025

ISO

ISO/TC 41/SC 1 Friction

International Standard

43.060.10   Engine block and internal components

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Scope

This document specifies the principal dimensional characteristics of V-ribbed pulley groove profiles, together with the corresponding endless V-ribbed belts of PK profile which are used predominantly for automotive accessory drive applications.
This document does not apply to the complete array of V-ribbed belts and pulleys of PH, PJ, PK, PL and PM profile for industrial and other non-automotive applications which are covered by ISO 9982. PK belt profile dimensions and tolerances are the same in both International Standards.
6.2 and 6.3 of this document do not apply to elastic belts.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 9981:1998

NOW

PUBLISHED
ISO 9981:2020
90.93 Standard confirmed
Nov 21, 2025