Circulating oil is a lubricant for circulating lubrication systems, offered in five viscosity grades. Grades: Iso-68, Iso-100, Iso-150, Iso-220, Iso-320.
Grades & published data
Typical values from the product data sheet, each with its test method.
| Property | Iso-68 | Iso-100 | Iso-150 | Iso-220 | Iso-320 | Method |
|---|---|---|---|---|---|---|
| Kinematic viscosity at 40 °CcSt | 68 | 100 | 150 | 220 | 320 | ASTM D-445 |
| Kinematic viscosity at 100 °CcSt | 8.5 | 11.1 | 14.5 | 18.8 | 24 | ASTM D-445 |
| Viscosity index | 95 | 95 | 95 | 95 | 95 | ASTM D-2270 |
| Pour point°C | -18 | -12 | -12 | -12 | -12 | ASTM D-97 |
| Flash point (open cup)°C | 220 | 220 | 220 | 220 | 220 | ASTM D-92 |
| Density at 15 °C | 885 | 885 | 890 | 890 | 895 | ASTM D-4052 |
Overview
Circulating oil is a lubricant for circulating lubrication systems, offered in five viscosity grades. Grades: Iso-68, Iso-100, Iso-150, Iso-220, Iso-320.
The specification table lists each grade separately, with the test method for every value, so grades can be compared directly before ordering.
Application
Bearings and gears fed from a central circulating system, where the machine builder specifies the grade.
Feature
Iso-68: KV40 68 cSt, KV100 8.5 cSt, VI 95, pour point -18 °C, flash point 220 °C; Iso-100: KV40 100 cSt, KV100 11.1 cSt, VI 95, pour point -12 °C, flash point 220 °C; Iso-150: KV40 150 cSt, KV100 14.5 cSt, VI 95, pour point -12 °C, flash point 220 °C; Iso-220: KV40 220 cSt, KV100 18.8 cSt, VI 95, pour point -12 °C, flash point 220 °C; Iso-320: KV40 320 cSt, KV100 24 cSt, VI 95, pour point -12 °C, flash point 220 °C.
Follow the equipment manufacturer's viscosity recommendation at operating temperature, then compare the grades' published values in the specification table.
Next step
The range above is what we publish. Formulation to a customer brief is a route of its own, and a sample is the first stage of it.
