ISO 11158:2009 pdf free download.Lubricants, industrial oils and related products (class L) — Family H (hydraulic systems) — Specifications for categories HH, HL, HM, HV and HG.
This International Standard specifies the minimum requirements for new mineral oil hydraulic fluids and is intended for hydraulic systems, particularly for hydrostatic hydraulic fluid power application. The purpose of this International Standard is for the guidance of suppliers and end users of mineral oil hydraulic fluids and for the direction of equipment manufacturers of hydraulic systems.
This International Standard is written in a general form so that its application can accommodate various climatic conditions throughout the world. This International Standard also stipulates the requirements for mineral-oil hydraulic fluids at the time of delivery.
Classification of sed in hydraulic applications is defined in SO 6743-4. Of the categories covered by ISO 6743-4, only five types of mineral oil based fluids are covered in this International Standard. These categories are HH, HM. HV and HG.
2 Normative references
ISO 2049: 1996, Petroleum products-Determination of colour(ASTM scale);
ISO 2160: 1998, Petroleum products-Corrosiveness to copper-Copper strip test; ISO 2592: 2000, Determination of flash and fire points- Cleveland open cup method;
ISO 2909: 2002, Petroleum products-Calculation of viscosity index from kinematic viscosity;
ISO 3016: 1994, Petroleum products-Determination of pour point;
ISO 3104: 1994, Petroleum products -Tansparent and opaque guids- Determination of kinematic viscosity and calculation of dynamic Viscosity;
ISO 3105: 1994, Glass capillary kinematic viscometers- Specifications and operating instructions;
ISO 3170: 2004, Petroleum liquids-Manual sampling;
3 Sampling
Sampling of hydraulic oils for the purpose of this International Standard shall be carried out in accordance with the pertinent procedure described in ISO 3170. The sample shall be evaluated on a representative portion.
Any drum, barrel, tanker compartment or any type of container delivered to the end user may be sampled and analysed at the discretion of the purchaser.
4 Terms and definitions
For the purpo this document, the terms and definitions given in ISO 5598 apply.
5 Requirements of mineral oil hydraulic fluids
For the purpose of this International Standard, oils shall be refined petroleum oils. The classification of these hydraulic oils shall be in accordance with ISO 6743-4.
Oils, when tested under prescribed methods, shall be in concurrence with limiting values set out in Table 1 to Table 5, where applicable.