If you’ve worked with hydraulic equipment for any length of time, it’s likely you’ve come across a hydraulic system with cloudy oil. Oil becomes cloudy when it is contaminated with water above its saturation level. The saturation level is the amount of water that can dissolve in the oil’s molecular chemistry and is typically 200 to 300 ppm at 68°F … Read more
Tag Archives: hydraulics design
The Problem With Air In Hydraulic Oil
Contaminants of hydraulic oil are broadly defined as any substance that impairs the proper functioning of the fluid. Air fits this definition and therefore when air becomes entrained in the oil, corrective action is required to prevent damage to both the oil and the other components in the hydraulic system.
Air can be present in four forms:
1. Free air … Read more
Hydraulic Machines Are No Different: You Get What You Pay For
One of our members wrote me this question:
“Our hydraulic power units are Kubota 86 hp and Deutz 76 hp 4 cylinder diesel systems. We use a 40 GPM gear pump with a flow divider valve to create two circuits of 20 GPM, each with a variable flow control. We have a diverter valve upstream to combine flows if needed. … Read more