Industrial Liquid Lubricants - ISO Viscosity Classification

Document Number: NL ISO 3448 : 2017
Sector: Petroleum and related Technologies
TC: NL TC 28
ICS:
This International Standard establishes a system of viscosity classification for industrial liquid lubricants and related fluids. This includes mineral oils used as lubricants, hydraulic fluids, electrical oils and for other applications. The usual method for kinematicviscosity determination is that specified in IS0 3104, but this may give anomalous results when used with non-Newtonian fluids (i.e. those whose coefficient of viscosity varies significantly with rate of shear). For SUCII fluids, it is therefore important to state the particular method by which viscosity has been determined. It is also recognized that there may be some pure chemicals and‘naturally occurring products. used as lubricants, which will not fatI within this classification.