- HYDRAULIC OIL VISCOSITY CHART HOW TO
- HYDRAULIC OIL VISCOSITY CHART ISO
- HYDRAULIC OIL VISCOSITY CHART FREE
HYDRAULIC OIL VISCOSITY CHART ISO
ISO grade (32, 46, 68) fluid to be used should fall within the range of the Referencing the manufacturer and model pump used in your equipment or fluid powered system. The following chart may be used to help determine the proper ISO grade hydraulic fluid to use with your system by The following chart may be used to cross over some of the more common brands of hydraulic fluid. Provided the customers supplies a container for the oil. HFI supplies hydraulic fluid three ways, 55 gallon drum, 5 gallon pail, and by-the-gallon for walk in sales
HFI Fluid Power Products Hydraulic Fluid Product Line Temperature Operating Window for Hydraulic System Operating at 45Â✯ to 150Â✯ Temperature Operating Window for 13 to 860 mm2/s (cSt), 100 VI Hydraulic Fluidįigure 3. Effect on viscosity upon the volumetric and mechanical efficiency of hydraulic pumpsįigure 2. May be helpful in determining the correct ISO grade for your hydraulic system.Ĭharts Provided By Machinery Lubrication Magazine, 2007įigure 1. Thelma Marougy, Eaton Hydraulics Operations, "Determining Hydraulic Fluid Viscosity Requirements". The following charts, provided by Paul Michael, Fluid Power Institute Steven Herzog, Rohmax Oil Additives When it is not possible to do this, the age of the machinery may be taken into consideration, as the effects of heat and friction The manufacturer to try to obtain the answer. Ultimatly the manufacturer of the equipment knows this value and is always best to consult Is the key to a good long term oil choice. If the viscosity is too high, however, will cause poor mechanical effieciency by increased friction during startup, and may lead to cavitation.įinding the right ISO grade that balances the benefits of volumetric effeciency against the drawbacks of mechanical efficiency
Higher viscosity hydraulic fluid tend to reduce the system's operating temperature by increasing the volumetric efficiency of the Harmful additives that can cause damage to components, and are designed to work within a specific temperature range. It is recommended however, that a proper hydraulic fluid be used, and chosen based on its ISO grade. System to emulsify, preventing it from being seperated from the oil. This occurs because the detergents can cause water that has condensed into the In engine oil can cause corrosion and cavitation. Systems life, 10W-40 automotive engine may be used, providing it does not contain degertant additives, and these additives used I would like to point out that for basic operation of any hydraulic system without concern to long-term effects of the Sometimes, 10, or 10 weight is mentioned as well. Viscosity is also most often expressed as the fluids ISO number or grade.Ĭommon ISO grades for use with hydraulic systems include 32, 46 and 68. The single factor that should weight the heaviest in determining the best choice of fluid to use is viscosity, otherwise knownĪs the fluid's weight.
HYDRAULIC OIL VISCOSITY CHART HOW TO
How to determine the best choice of hydraulic fluid to use for your equipment or system.Īlthough many manufactures of hydraulic fluid provide various grades of detergents and oxidation stability in the fluids they produce, Information given regarding the choices of hydraulic fluid to use is listed as a guide only, and HFI Fluid Power Products makes no guarantees or promises regarding the information provided below, and any The HFI Filter Element Wizard allows you to input your mfg part number and will return all interchanges found in its massive database. If the information you are looking for is not on this page, we suggest you contact the technical support of one of the US's larger hydraulic fluid producers, such as Shell Global. Hydraulic fluid is offered to our local customers, but we shy away from sales of hydraulic fluid outside of our local area. Hose assemblies, as well as components such as valves. We primarily sell hydraulic adapters, tube and HFI Fluid Power Products does not actively involve itself with hydraulic fluid technical advice. The information on this page is presented as a courtesy for our web guests. Information Regarding Hydraulic Fluid Choice
HYDRAULIC OIL VISCOSITY CHART FREE
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