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ISO 7649:1991

Clutch housings for reciprocating internal combustion engines — Nominal dimensions and tolerances

Apr 11, 1991

General information

90.60     Jun 5, 2026

ISO

ISO/TC 22/SC 40

International Standard

43.040.50  

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Scope

Specifies the nominal dimensions and tolerances which affect the interchangeability between clutch housings for spring-loaded clutches and mating parts. All other dimensions and tolerances are left to the discretion of the component manufacturer. Does not apply to engines for aircraft and passenger cars; it may be used for other engine applications where no specific International Standard exists. Clutch housings of size codes 1 to 4 in table 1 are recommended for commercial vehicles and buses.

Life cycle

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PUBLISHED
ISO 7649:1991
90.60 Close of review
Jun 5, 2026