What is ISO 4406 - Hydraulic fluid power about?
ISO 4406 specifies the code to be used in defining the quantity of solid particles in the fluid used in a given hydraulic fluid power system.
The purpose of this code is to simplify the reporting of particle count data by converting the numbers of particles into broad classes or codes, where an increase in one code generally represents a doubling of the contamination level.
Who is ISO 4406 - Hydraulic fluid power for?
ISO 4406 on the method for coding the level of contamination by solid particles is beneficial for:
- Fluid power technicians
- Hydraulics engineers and hydraulics technicians
- Construction, farming, mining, entertainment, and recycling industries
- Chemical engineers
Why should you use ISO 4406 - Hydraulic fluid power?
In hydraulic fluid power systems, power is transmitted and controlled through a liquid under pressure within an enclosed circuit.
Solid particle contaminant is always present in the hydraulic fluid and the amount needs to be determined because the contaminant can cause serious problems. The ISO 4406 cleanliness code has gained worldwide acceptance as a means of communicating the cleanliness of hydraulic fluid. Most hydraulic component manufacturers require a certain ISO cleanliness level for warranty purposes, to ensure proper function and for long, trouble-free life.
ISO 4406 provides details about the code for contamination levels using APCs or PCMs comprises three scale numbers that permit the differentiation of the dimension and the distribution of the particles. Overall, ISO 4406 is helpful as it provides a method for coding the level of contamination by solid particles which can be beneficial for your business.
What’s changed since the last update?
BS ISO 4406:2021 supersedes BS ISO 4406:2017, which is withdrawn.
BS ISO 4406:2021 cancels and replaces the third edition (ISO 4406:2017), which has been technically revised. The main change compared to the previous edition is as follows:
- The use of Particle Contamination Monitors (PCMs) can also be utilized for the determination of the ISO 4406 contamination code and PCM is referenced throughout BS ISO 4406:2021.
