What is the disassembly and maintenance of hydraulic cylinder?

Take out the oil from the two chambers of the hydraulic cylinder, and then remove the cylinder head and the connection between the cylinder head and the cylinder block. Before disassembly, correct the thread, pour kerosene, and tap the cylinder head lightly to loosen the thread vibration and facilitate disassembly. Before the piston and piston rod parts are taken out of the cylinder, the dirt in the cylinder should be removed before disassembly. Do not push the piston out of the cylinder to avoid dust damage to the cylinder bore.

After the hydraulic cylinder is disassembled, the appearance of each part of the hydraulic cylinder should be checked first, and according to the experience, it can be judged which parts can continue to be used and which parts must be replaced and repaired. Inner surface of cylinder barrel. Shallow linear friction or punctate scars are allowed on the inner surface of the cylinder, but if there are deep scars with longitudinal strain, even if a new piston sealing ring is replaced, oil leakage cannot be prevented. At this time, the inner hole must be polished, and it can also be corrected with very fine sandpaper or oilstone.

Matters needing attention of hydraulic cylinder

When installing the hydraulic cylinder, the correct device of the hydraulic cylinder must be installed according to the instructions provided by the manufacturer. In the whole installation process of hydraulic cylinder, the most important thing to pay attention to is to prevent dirt from entering the hydraulic cylinder, and connect the entered hydraulic cylinder with other oil pipes correctly, and there must be no connection error.

If the servo hydraulic cylinder is installed, the electrical wiring of the sensor and servo valve should be connected according to the electrical wiring diagram, and the low-voltage power-on inspection should be carried out first, and then the device should be installed according to the requirements of the manual.