Another common rating for filters is the absolute rating. An absolute rating gives the size of the largest particle that will pass through the filter or screen. Essentially, this is the size of the largest opening in the filter although no standardized test method to determine its value exists. Still, absolute ratings are better for representing the effectiveness of a filter over nominal ratings.
Most hydraulic systems will operate using a variety of fluids. These include multigrade engine oil, automatic transmission fluid and more conventional antiwear hydraulic oil.
Going “green” by becoming ecologically and environmentally responsible is an excellent practice that does not always have to cost your organization money. In many cases, it can actually save money. A number of industries have begun reclaiming or recycling used oil because it makes good business sense. These include automotive manufacturers, steel mills, paper mills, sugar mills, process plants and power generation plants.
Stickers or lube identification tags have been employed for years to guarantee the right lubricant is put in the right place. However, few organizations utilize lube tags to their full potential, while some fail to use them at all. These simple devices not only can help ensure the proper lube is being used, but if managed correctly, they can also improve machine reliability.
In a paper machine drying section the lubrication system has been the cause of many bearing failures over the years. There are five major factors that influence bearing failures on drying cylinder bearings which continue to happen in the industry today. Highlighted below are the key factors and the solutions to minimize these failures. It is vitally important to understand each one.
