BS EN ISO 6743-4:2015 pdf free
BS EN ISO 6743-4:2015 pdf free.Lubricants, industrial oils and related products (class L)一Classification
This part of ISO 6743 establishes the detailed classification of fluids of Family H (Hydraulic systems) which belong to class L (Lubricants, industrial oils, and related products). It is intended to be read in conjunction with ISO 6743-99. This classification system does not include automotive brake fluids or aircraft hydraulic fluids.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 3448, Industrial liquid lubricants一ISO viscosity classification
ISO 11158, Lubricants, industrial oils and related products (class L)一Family H (hydraulic systems)一Specifications for categories HH, HL, HM, HV and HG
ISO 12922, Lubricants, industrial oils and related products (class L)一Family H (Hydraulic systems)一Specifications for hydraulic fluids in categories HFAE, HFAS, HFB, HFC, HFDR and HFDU
ISO 15380, Lubricants, industrial oils and related products ([class L)一Family H (Hydraulic systems)一Specifications for categories HETG,HEPG,HEES and HEPR
3 Explanation of symbols used
3.1 This detailed classification of Family H has been established by defining the categories of products required for the main applications of the family and final sub-division by reference to composition of corresponding products.
3.2 Each category is designated by a symbol consisting of a group of letters which, together,constitute a code.
The first letter of the code (H) identifies the family of the product considered but any following letters taken separately have no significance of their own.
NOTE The designation of each category can be supplemented by the addition of viscosity grades according to ISO 3448.
3.3 In this classification system, products are designated in a uniform manner. For example, a particular product may be designated in complete form, i.e. ISO-L-HV 32, or in an abbreviated form, i.e.L-HV 32, the number indicating the viscosity according to ISO 3448.BS EN ISO 6743-4 pdf download.
