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Find viscosity tables and charts for ISO VG (viscosity and density values with their source).
ISO VIscosity Class Ranges International Organization of Standardization (ISO) VISCOSITY CLASSIFICATION SYSTEM FOR INDUSTRIAL FLUID LUBRICANTS ISO Viscosity Grade Number Viscosity Grade Range Centistokes at 40°C Minimum Maximum 2 1.98 2.42 3 2.88 3.52 5 4.14 5.06 7 6.12 7.48 10 9.00 11.00 15 13.50 16.50 22 19.80 24.20 32 28.80 35.00 46 41.40 ...
This is illustrated in the table below, which shows the ISO viscosity grade numbers, the mid-points of each bracket, and the viscosity limits. This system is now used to classify all industrial lubricating oils where viscosity is an important criterion in the selection of the oil.
For exact value ranges, contact your fluid manufacturer. To determine viscosity, locate your fluid ISO VG across the top, locate your target/specified temperature in the two left hand columns, and the cell in which the respective column and row intersect is the approximate viscosity value.
Compare this temperature range to the TOW chart in Figure 3. ISO VG 46 and ISO VG 68 fluids cover the upper and lower bounds of the 45ºF to 150ºF range. Consequently, inventory may be consolidated by using either an ISO VG 46 or ISO VG 68 antiwear hydraulic oil throughout the plant.
Grease Warehouse Industrial Oils are graded in accordance with the ISO Viscosity Classification System, approved by the International Standards Organization (ISO). The ISO system is based upon viscosity at only one temperature, 40°C. ISO viscosity ranges are summarized in the table below: .
According to JIS K 2001 “Industrial liquid lubricants - ISO viscosity classification”, 20 viscosity grades are available ranging from ISO VG 2 to 3200. The figure below shows the viscosity range associated with the operation of hydraulic systems. For details, see “Viscosity vs. Temperature” on page 862. Kinematic Viscosity [mm2/s]
