As you’re hopefully well aware, an unrestricted case-drain line is essential on a piston-type hydraulic motor, whether it’s axial, radial or bent-axis design. But when it comes to gear designs: external, internal and gerotor, a case-drain line is generally considered optional. This is because these types of motors don’t have a large-volume case or sump like piston motors do. But … Read more
Tag Archives: hydraulics design
Not Hose or Tube: Hose – Tube – Hose
Noise reduction in hydraulic systems often involves isolating the pump and prime-mover assembly using flexible mounts (isolators). In these cases, the use of hose is necessary to maintain the isolation between the pump and prime-mover and the rest of the system.
The flip-side to this though is, although long lengths of hose can reduce structure borne noise, hose is actually … Read more
Contamination Control: Why the Hydraulic Machine Matters
I have for many years asserted that hydraulic fluid cleanliness is no longer THE most critical preventative maintenance issue. There are two reasons for this: the first is the word has been so widely preached over such a long period of time that even those who haven’t being paying attention got the message. And secondly, modern advances in filtration technology … Read more