A hydraulic system needs fluid for various reasons, and a hydraulic reservoir can hold enough fluid to provide for all of those needs. However, it also accomplishes several other tasks. Hydraulic reservoirs provide a large surface area over which to transfer heat in the fluid to the surrounding area. They also provide a physical barrier in the form of a baffle between a fluid that enters the suction line of the pump and that which enters the reservoir itself.
In order to get what's expected out of any hydraulic system, ensuring that it receives regular maintenance and care is absolutely critical. But when you've not had years of experience in doing this, troubleshooting power loss in a hydraulic system can seem an impossible task.
One of the many issues that can cause interference with the optimal performance of hydraulic machinery is a process called 'dieseling'. This term refers to a process by which combustion occurs in a hydraulic cylinder, and was originally used to describe combustion in diesel engines, which can occur with pressure alone.
Regardless of the type of hydraulic system you may have, monitoring its ongoing health is crucial to a healthy system. Fine particles are the enemy of many hydraulic systems, causing major issues in production as well as equipment handling. Rotating parts in fans, pumps and motors are at greatest risk of a decrease in operational efficiency due to the build-up of fine particles.
Fluid-power cylinders are present in a high number of hydraulic systems. But because the up-front cost of these and accompanying valves and power units is high, maximising their performance is the preferable option.
Many of today’s hydraulic systems employ valves of the electro-hydraulic variety. These valves allow for the rapid conversion of electrical energy to mechanical energy. However, they are also of a far more intricate construction than their older control valve counterparts. As such, they tend to be more vulnerable to damage due to solids contamination.
The aeration of fluid in hydraulic systems can cause any number of issues, including cavitation, poor response time and high noise volumes. Bubble removal can address all of these issues and more, as well as lessen the size of the reservoir and lower system costs overall. But how do bubble removal systems work?
The most common culprit for the failure of rod seals in hydraulic systems is damaged piston rod bearings or damaged piston rods themselves. There are many potential but typical causes of this kind of damage. Anything that places the linear force of the cylinder in jeopardy, such as misaligning a cylinder with its load or continuing to use a bent piston rod can place your entire system at risk of failure.
Nothing lasts forever, and the same is true of your hydraulic hose assemblies. However, there are steps you can take to extend their life as long as possible.