This means that an ISO Code of 22/18/13 has quadruple the particles as an ISO Code 20/16/11, so don’t be misled by small increases in the ISO Code. Because this system is now a worldwide standard, hydraulic manufacturers publish minimum requirements of ISO 4406 cleanliness. A piston pump manufacturer would specify at least 19/17/14, for example.
ISO 4406:2017Abstract Preview
ISO 4406:2017 specifies the code to be used in defining the quantity of solid particles in the fluid used in a given hydraulic fluid power system.
General information
- Publication date : 2017-08
Corrected version (en) : 2018-03 - Number of pages : 6
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