A new technical standard has recently been published and is now available from the National Fluid Power Association (NFPA).
ISO/TR 10686:2013 Hydraulic fluid power – Method to theoretically relate the cleanliness of a hydraulic system to the cleanliness of the components and hydraulic fluid that make up the system
This Technical Report describes methods that can be used to:
- relate the cleanliness of a hydraulic system to the cleanliness of its components and the hydraulic fluid belonging to the system;
- estimate the final cleanliness level of an assembled hydraulic system filled with the hydraulic fluid, upon its release from the manufacturing area. The estimation of the final cleanliness level is based on the cleanliness level of each component in the system and on the cleanliness level of the filling fluid;
- calculate and manage cleanliness requirements of components and subassemblies that make up a system and of the fluid filling it so as to achieve a required cleanliness level (RCL) for the final system.
ISO/TR 10686 helps a designer of a fluid power system estimate the cleanliness of an assembled system by working from the cleanliness levels of the system’s constituent components and fluid. This allows the designer to adjust the specified cleanliness level of the components and fluid to achieve the necessary system cleanliness in the most technically and economically efficient way.
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