one Hydraulic cylinder The viscosity of the working oil used is 29~74mm2/S. ISO VG46 anti-wear hydraulic oil is recommended. The operating oil temperature is - 20~80. C range. When the ambient temperature and service temperature are low, the oil with lower viscosity can be selected.         

2. The hydraulic cylinder requires that the system filtration accuracy should not be less than 80um. The oil pollution should be strictly controlled, the oil should be kept clean, the oil performance should be checked regularly, and the necessary fine filtration and new working oil should be replaced.         

3. During installation, ensure that the direction of the connecting head at the top of the piston rod is consistent with the direction of the cylinder head, the ear ring (or the middle hinge shaft), and ensure the straightness of the entire piston rod in the process of moving forward and backward to prevent the phenomenon of rigid interference and unnecessary damage.         

4. After the hydraulic cylinder is installed on the main engine, first check whether there is oil leakage at the oil port piping part and the guide sleeve, and oil should be added to the ear ring and the middle hinge shaft bearing.         

5. If the hydraulic cylinder needs to be disassembled due to oil leakage and other faults, the position of the piston shall be moved to any end position of the cylinder barrel by hydraulic pressure, and improper knocking and sudden falling shall be avoided as far as possible during disassembly.         

6. Before disassembly, loosen the overflow valve to reduce the pressure of the hydraulic circuit to zero, and then cut off the power supply to stop the hydraulic device. After loosening the oil port piping, plug the oil port with an oil plug.         

7. The hydraulic cylinder cannot be used as the electrode grounding to avoid electric damage to the piston rod.