) Cylinder internal leakage. Internal leakage of hydraulic cylinders including hydraulic cylinder seals, rod seals and piston seals and closures were caused by wear and tear such as excessive leakage. Mainly due to excessive wear of the piston seal is not properly controlled valve regulates the speed of the hydraulic cylinder 300 tons suppliers, resulting in excessive back pressure and a seal improperly installed or hydraulic oil contamination. Followed by the assembly and not a foreign body into the sealing material quality. The consequence is slow, weak, Shaoguan hydraulic cylinder, it can also cause serious damage to the piston and the cylinder, a "pull-cylinder" phenomenon. Approach is to adjust the speed control valve, the control installation instructions shall make the necessary actions and improvements. 400 tons of hydraulic cylinders best | Lanzhou hydraulic | Texas aerospace hydraulic provided by Dezhou City aerospace hydraulic machinery plant. Dezhou City aerospace hydraulic machinery plant (www.sdhtyeya.com) strong, credible, in Dezhou hydraulic equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Texas aerospace hydraulic into the brilliant and you work for a better future!