Lubricants, industrial oils and related products (class L); Classification; Part 4 : Family H (Hydraulic systems)

This standard establishes a systematic framework for categorizing lubricants, industrial lubricants, and related products intended for use in hydraulic systems. Specifically addressing the H group, it provides precise classification criteria to distinguish fluids designed for power transmission within hydraulic circuits. The document serves as a reference for selecting appropriate lubricating fluids based on their operational environment and specific performance requirements. It outlines various types of fluids used in diverse industrial applications, ensuring consistency in nomenclature and specification across different sectors. By defining distinct categories, it facilitates clear communication between manufacturers, suppliers, and end-users regarding the nature and suitability of hydraulic fluids. This classification system supports the global trade of lubricating products by offering a unified language for describing fluid characteristics. The guidelines help in identifying the correct fluid type for specific machinery, thereby contributing to the proper maintenance and efficient operation of hydraulic equipment. It covers a broad spectrum of fluid formulations used in stationary and mobile hydraulic systems, providing a structured approach to product identification without specifying performance test methods or physical properties in detail.