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ISO 4391:1983

Hydraulic fluid power — Pumps, motors and integral transmissions — Parameter definitions and letter symbols

Jun 1, 1983

General information

90.20     Apr 15, 2026

ISO

ISO/TC 131/SC 2

International Standard

23.100.10  

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Scope

Describes and systematically defines the principal technical characteristics, and allots letter symbols to these characteristics, and indicates how they can be more clearly defined by suffixes corresponding to particulate cases. Lists also an analysis of parameter dimensions. Gives examples for the use of symbols with suffix, and includes definition of terms without symbols.

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PUBLISHED
ISO 4391:1983
90.20 Standard under periodical review
Apr 15, 2026

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Hydraulic fluid power — Pumps, motors and integral transmissions — Parameter definitions and letter symbols

90.20   Standard under periodical review

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