Filter elements are rated on their ability to remove contaminants of specific targeted sizes from a fluid under specific operating conditions. Filtration ratings can be measured by analyzing three areas of performance: 1. Dirt holding capacity 2. Absolute rating (micron) and percent efficiency (beta ratio) 3. Pressure drop across the element at a specific absolute…
Trends in filters 2014
Gearbox breathers are the first line of defense against airborne contaminants. The devices let the gearbox take in air as it cools while filtering water vapor and solid contaminants before they enter the fluid system. When gearboxes warm up, breathers should let expanding air escape while keeping oil mist and splash inside. When a breather…
What you should know about gearbox filters and breathers
Filters and breathers on wind-turbine gearboxes must work under conditions found in no other industrial setting. Gearbox oil, for instance, undergoes large viscosity changes due to a wide temperature span and operating conditions. And then there is potential for a high water content in the oil from humidity and condensation. “Most current maintenance practices are…