The cleanliness classes according to ISO 4406, important for oil cleanliness!   Oil purity according to ISO 4406: 20/17/14 You may have read this in your hydraulic system manual or on product data sheets, but what does it actually mean?   The cleanliness of the oil is usually important Purity classes ISO 4406 is given…

Determination of the purity of oil, the purity classes…   In addition to the basic properties of “viscosity” and “wear protection”, the purity of lubricating and hydraulic oils is particularly important for the safe operation of machines and systems. The degree of contamination of the oil is determined by the size and number of particles…