NF ISO 11158, T60-525 (10/2023)

This document specifies the minimum requirements for new hydraulic fluids based on mineral oils. It is applicable to hydraulic systems, and particularly to hydrostatic applications involving power transmission by hydraulic fluids. This document provides guidelines to suppliers and end users of mineral oil-based hydraulic fluids and directions to manufacturers of hydraulic system equipment. This document is written in a general manner so as to be applicable regardless of the different climatic conditions around the world. This document also specifies requirements for mineral oil-based hydraulic fluids at the time of delivery. This document is intended to be read in conjunction with ISO 6743-4, which classifies fluids used in hydraulic applications. Of the categories covered by ISO 6743-4, only five types of mineral oil-based fluids are covered in this document. These categories are: HH, HL, HM, HV and HG. This document does not cover extreme use cases in terms of hydraulic circuit design, temperature and extreme conditions. NOTE For use in exceptional conditions, suppliers and purchasers of lubricants may mutually agree on additional test methods and product acceptability criteria.
(Automatic translation from French)