Here you will find descriptions of our industry terms for reference.
Absorbent Filter
A filter that cleans hydraulic fluid by using a medium to trap and hold contaminants by mechanical means.
Adsorbent Filter
A filter that cleans hydraulic fluid by using a medium to trap and hold contaminants by molecular means.
Contaminant
Foreign, undesirable materials carried into the liquid or air of a fluid power system: dirt, water, paint, metallic particles or other materials that are ingested during equipment operation.
Fluid Conditioning
Methods used to clean and maintain fluids at an acceptable operating temperature in a hydraulic or pneumatic system.
Full-Flow Filtration
Hydraulic fluid filtration system that filters all pump output before returning it to the system reservoir.
Off-Line Filtration
Hydraulic fluid filtration system that continually pumps fluid out of the reservoir and through a filter before pumping it back into the system reservoir.
Proportional Filtration
Hydraulic fluid filtration system that continually pumps a measured amount of system fluid to the filter and then returns it to the system reservoir.
Did You Know…
- When exposed to high operating temperatures, hydraulic fluids oxidize creating a varnish. This varnish promotes the formation of sludge and contributes to corrosion of internal metal surfaces.
- Up to 75% of most hydraulic system failures can be traced to system fluid contamination.
- The sources of hydraulic system contaminants include introduction during the manufacturing process, during operation, from breakdown of hydraulic fluid or from equipment component wear.
- Hydraulic fluid contaminants reduce the fluid’s ability to lubricate, seal clearances and to transfer heat or energy. They also increase excessive wear of internal components within the system.
- Too high or too low temperatures can impact hydraulic fluid performance. For most systems, the optimal reservoir oil temperature is between 110°F and 140°F.
- Elevated hydraulic system operating temperatures can be designed to balance the rate of system heat input by allowing heat reduction through Conduction, Convection or Radiation.