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ISO 6743-4 pdf hydraulic oil class standard

Date:Jun 20, 2019

ISO 6743-4 standard is for Lubricants, industrial oils and related products (class L) Classification - Part 4: Family H (Hydraulic systems) (ISO 6743-4:1 999).


ISO 6743 consists of the following parts, under the general title Lubricants, industrial oils and related products (class L) — Classification:

Part 0: General

Part 1 : Family A (Total loss systems)

Part 2: Family F (Spindle bearings, bearings and associated clutches)

Part 3A: Family D (Compressors)

Part 3B: Family D (Gas and refrigeration compressors)

Part 4: Family H (Hydraulic systems)

Part 5: Family T (Turbines)

Part 6: Family C (Gears)

Part 7: Family M (Metalworking)

Part 8: Family R (Temporary protection against corrosion)

Part 9: Family X (Greases)

Part 1 0: Family Y (Miscellaneous)

Part 1 1 : Family P (Pneumatic tools)

Part 1 2: Family Q (Heat transfer fluids)

Part 1 3: Family G (Slideways)

Part 1 4: Family U (Heat treatment)

Part 1 5: Family E (Internal combustion engines)

10_ISO_6743-4_hydraulic_fluids_classification_standard

This ISO 6743-4 establishes the detailed classification of fluids of family H (Hydraulic systems) which belong to class L (Lubricants, industrial oils and related products). It should be read in conjunction with ISO 6743-0. This classification excludes, for the time being, automotive brake fluids and airborne fluids. However, this edition includes environmentally acceptable fluid categories, i.e.: HETG, HEPG, HEES and HEPR.



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