Table of Contents

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and units
5 Basic considerations
6 Prediction from component cleanliness to system
  cleanliness (the bottom-up approach)
7 Specifying the cleanliness requirements from system
  cleanliness level to component cleanliness level
  (the top-down approach)
8 Relationship between cleanliness levels per unit volume
  and cleanliness levels per unit surface area
Annex A (informative) - Determination of geometrical
        characteristics of components
Annex B (informative) - Example of calculation of the
        cleanliness of an assembled system from the cleanliness
        of individual components
Annex C (informative) - Impact of surface cleanliness level
        on fluid cleanliness level
Annex D (informative) - Relating volume to surface area
Annex E (informative) - Relating the cleanliness of parts
        to the cleanliness of components
Bibliography

Abstract

Specifies 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; - 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.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	International Organization for Standardization
Pages
ISBN
Committee	TC 131