Defining Cleanliness
ISO 4406 determines the cleanliness of a fluid and is
used by OEMs to define sentencing limits of the
components of an injection system, engine diesel
or hydraulic system.
What is ISO 4406?
Understanding Wear
The ISO 4406 test is a granulometry analysis that is carried
out on the fluid and a qualification of 3 codes is obtained:
Code 1: particle content greater than 4 microns per ml
Code 2: content of particles greater than 6 microns per ml
Code 3: content of particles greater than 14 microns per ml
Depending on the type of component, OEMs define an ISO
code that determines the correct operation of the system.
ISO 15/13/10
LISTENING TO OEMs
Hydraulic and lubricant component manufacturers agree that
ISO 4406 defines service life at 85%
An ISO 15/13/10 code guarantees the optimal functioning of
the equipment with the highest performance.
Life Extension
What OEMs tell us
Being out of optimum parameters (ISO 15/13/10), means that
we expose our components to premature wear, along with the
need to decrease oil change intervals.
Knowing the condition at which we are working is fundamental
to establish goals that allow us to achieve excellence in our
maintenance practices.
Visual Expresion of ISO 4406
More than 4 microns:
20,000-40,000 in 1 milliliter
More than 4 microns:
1,300-2,500 in 1 milliliter
More than 4 microns:
10-20 in 1 milliliter
94% OF THE COST OF FILTRATION IS GOING FROM 22/21/18 TO 18/16/13 AND 6% FROM 18/16/13 TO 11/8/7
PPM Expression of ISO 4406
Average: 473 grams in
10,000 gallons (38,780 liters)
Average: 29 grams in
10,000 gallons (38,780 liters)
Average: <1 gram in
10,000 gallons (38,780 liters)
Contamination weight per 10,000 gls (38,780 liters)