Advantages
Good anti-wear performance — prevents wear of internal components reducing downtime Resistant to oxidation — extends service life Good water separation—reduces downtime and prolongs lubricant life.
The following characteristics and properties are important for hydraulic oils Low temperature sensitivity of viscosity; Thermal and chemical stability; Low compressibility; Good lubrication (anti-wear and anti-stick properties, low coefficient of friction); Hydrolitic stability (ability to retain properties in the high humidity environment); Low pour point (the lowest temperature, at which the oil may flow); Water emulsifying ability; Filterability; Rust and oxidation protection properties; Low flash point(the lowest temperature, at which the oil vapors are ignitable); Resistance to cavitation; Low foaming; Compatibility with sealant materials.
Hydraulic systems are widely used in industrial machinery, construction equipment, automotive, aircraft and marine applications.
Mineral based hydraulic oil | ||
Property | Value in metric unit | Value in US unit |
Density at 60°F (15.6°C) | 0.880 *103 kg/m3 | 54.9 lb/ft3 |
Kinematic viscosity at 104°F (40°C) | 68.0 cSt | 68.0 cSt |
Kinematic viscosity at 212°F (100°C) | 10.2 cSt | 10.2 cSt |
Viscosity index | 135 | 135 |
Flash point | 204 ºC | 400 ºF |
Pour Point | -40 ºC | -40 ºF |
Aniline Point | 88 ºC | 190 ºF |
Color | max.7.0 | max.7.0 |