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ISO 8426-1:2025

Hydraulic fluid power — Determination of derived displacement of positive displacement pumps and motors — Part 1: Two-step Toet method

Publication date:   Aug 14, 2025

General information

60.60   Standard published   Aug 14, 2025

ISO

ISO/TC 131/SC 8 Product testing

International Standard

23.100.10   Pumps and motors

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Scope

This document specifies the two-step Toet method for the determination of the derived displacement of hydraulic fluid power positive displacement pumps and motors under steady-state conditions. A value for the derived displacement is determined from measurements at multiple shaft speeds.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 8426:2008

NOW

PUBLISHED
ISO 8426-1:2025
60.60 Standard published
Aug 14, 2025