What is a single-acting hydraulic cylinder piston rod is only one end of the call into the single-acting hydraulic cylinders, engineering mechanical rod basically single out, rod mill on the machine, such as flat-out classes are single, cylindrical grinding The cylinder is double out. Very simple, look at the oil port cylinder bi-cylinder, there is a low pressure on the single-acting cylinder, 2 is the dual role means: liquid pressure only in one direction of the piston or plunger movement, reverse the direction of movement must rely on external forces to achieve external forces: the spring force or weight. Hydraulic cylinder failure, the most problematic is that bad judgment is when foreign matter into the hydraulic tank. After entering a foreign body, the outer surface of the piston sliding if fitted with a lip seal, then work the lip seal to scrape foreign body cylinder, which is advantageous for avoiding scratches. But 0-ring piston fitted custom cylinders, the ends are sliding surface, foreign matter sandwiched between the sliding surfaces, easy to form scars. Way foreign matter into the cylinder are the following. Bi-cylinder fuel tank _ _ Shenyang Lu Lu of hydraulic force provided by the hydraulic machinery plant in Texas. Texas Lu force hydraulic machinery plant (www.luliyeya.com) strong, credible, in Dezhou hydraulic machinery and components industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Lu Hydraulic and you hand into the brilliant, for a better future!