D2422-97 1.1 This classification is applicable to
all petroleum-base fluid lubricants and to those nonpetroleum materials
which may be readily blended to produce fluid lubricants of a desired
viscosity, that is, lubricants for bearings, gears, compressor
cylinders, hydraulic fluids, etc. 1.2 This classification is applicable to
fluids ranging in kinematic viscosity from 2 to 1500 cSt (mm /s)
as measured at a reference temperature of 40°C. Expressed in approximate
equivalents, the range would be 32 to 7000 SUS. In the category of
petroleum-base fluids, this covers the range from kerosine to heavy
cylinder oils. 1.3 Fluids of either lesser or greater
viscosity than the range described in 1.2 are at present seldom used as
industrial lubricants. Should industrial practices change, then this
system, based on a mathematical series of numbers, may be extended to
retain its orderly progression. J 300 Engine Oil Viscosity Classification
Standard
Classification of Industrial Fluid Lubricants by Viscosity System
ISO 3448 Industrial Liquid Lubricants-ISO Viscosity Classification
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