Air is both a normal ingredient, and a contaminant, of hydraulic oil. It’s a normal ingredient because hydraulic fluid typically contains between 6 and 12 percent by volume of dissolved air. There’s no avoiding this. And provided this dissolved air stays dissolved, it poses no problem to the hydraulic system or the fluid itself.
But if this dissolved air comes … Read more
**Editor’s note: This post is one to share with your friends and colleagues.
A webinar presented by the International Fluid Power Society on the prevention and management of fluid injection injuries cites a study by Snarski and Birkhahn, two emergency department doctors at the New York Methodist Hospital. And it contains some sobering statistics:
Fluid injection injuries are relatively rare … Read more
One of our members writes:
“We have a simple hydraulic system: pump and 4 double-acting cylinders. Most of the oil between the directional control valve and cylinders ‘shuttles’ back and forth in the lines without returning to tank. The manufacturer of the system, Rexroth, tells me there is never a need for bleeding air from the system. How can this … Read more