The numbers 46 and 68 refer to the ISO Viscosity, and all hydraulic oils sold in Australia use this number grading system. ... The hotter the temperature, the thinner the oil becomes and the colder the oil, the thicker.2017-09-08
What does ISO VG 46 mean?
Viscosity is defined as a fluid's resistance to flow at a specific temperature. ... For example, for a lubricant to be considered an ISO VG “46,” it would have to have a flow speed of 41.4-50.6 cSt. The thicker the oil (the slower the flow rate) gives it a higher ISO VG number.2018-07-26
Is ISO 46 the same as ISO VG 46?
Now to the numbers: 22, 46 and 315 refer to the viscosity grade (VG) of the oil; 22 and 46 are ISO grades and refer to the oil's kinematic viscosity in centistokes at 40 degrees Celsius, plus or minus 10 percent. So, an ISO VG 46 hydraulic oil has a viscosity of between 41.4 and 50.6 centistokes at 40 degrees Celsius.
What is ISO 68 oil equivalent?
Obviously, SAE and ISO use two different scales to measure viscosity. SAE 10W is equivalent to ISO 32, SAE 20 is equivalent to ISO 46 and 68, and SAE 30 is equivalent to ISO 100. ... The viscosity of the fluid largely determines the oil temperatures within which the hydraulic system can safely operate.
Can I use ISO 68 instead of ISO 46?
If your tractor or truck calls for 20W hydraulic oil, it may be best to use the thicker ISO 68 in hot temperatures and thinner ISO 46 in cold weather.2015-10-07
What is ISO grade 68 oil?
Hydraulic 68 is part of Crown Oil's range of premium-grade mineral-based hydraulic oils with good anti-wear properties providing protection in the most demanding of systems while still meeting ISO standards for hydraulic oil. This hydraulic fluid is rust, corrosion and oxidation inhibited.