This International Standard 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.
The complete array of V-ribbed belts and pulleys of PH, PJ, PK, PL and PM profile for industrial and other non-automotive applications is the subject of ISO 9982. PK belt profile dimensions and tolerances are the same in both International Standards.
ISO 9981:1998 history
2020ISO 9981:2020 Belt drives — Pulleys and V-ribbed belts for the automotive industry — PK profile: Dimensions
1998ISO 9981:1998 Belt drives - Pulleys and V-ribbed belts for the automotive industry - PK profile: Dimensions
1990ISO 9981:1990 Belt drives; pulleys and V-ribbed belts for the automotive industry; dimensions; PK profile