滤芯的过滤孔径、过滤面积、耐压程度是衡量滤芯质量的重要标准。一般来说,工程机械生产厂家都规定了发动机和液压系统的保养周期(如分别为250 h和2 000 h),人们往往把上述规定理解为更换油品时才更换滤芯,实则在特殊情况下,不需要更换油品时也需要更换滤芯。正确地选择、使用滤芯,是延长机械使用寿命的一个重要手段。经常 Filter pore size, filtration area, pressure level is an important measure of filter quality standards. In general, construction machinery manufacturers have set the engine and hydraulic system maintenance cycle (such as 250 h and 2000 h respectively), people often interpret the above provisions as the replacement of oil only when the filter replacement, but in exceptional circumstances , Do not need to replace the oil also need to replace the filter. Correct choice, the use of filter, is to extend the service life of an important tool. often