low, you would choose an oil with lower rated viscosity and a low pour point, which is the temperature at which oil will still pour. If your machine sees varying temperature ranges, like an all-weather mobile machine, a high viscosity index, which describes an oil’s ability to maintain its viscosity over a wide temperature range, is crucial. It is important to consider the viscosity requirement of the components in your hydraulic system. A piston pump, for example, may require between 16 and 40 centistokes, which is a description of kinematic (measured while flowing) viscosity. Hydraulic oil is engineered with other important properties, although these tend to be common regardless of brand, viscosity or application. Hydraulic oil has
a package of chemical additives to improve the performance of both the oil and the components of the hydraulic system. These additives can improve the foaming resistance of the oil, its corrosion/ rust resistance and the waterretention properties. The additive package of hydraulic fluid is what separates low- and high-quality fluids, and additives also improve the viscous properties of oil. When in doubt, always choose a premium fluid for your application at a viscosity appropriate for your operating conditions.
Suction & Return Line System
The latest addition to the AFP product family simplifies suction & return line connections. Connections are available in NPT, SAE, flanged, and hose barb in sizes up to 4”. Our lockable LV2B series ball valves will complete your assembly and are available with limit switches or proximity sensors ensuring proper startup.
Contact AFP customer service for additional details
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FLUID POWER WORLD
6 • 2016
6/17/16 9:02 AM
Fluid Power World Handbook 2016