11 precautions for installing hydraulic cylinders:

1. The hydraulic cylinder and the surrounding environment should be clean. The oil tank should be sealed to prevent contamination. The pipeline and oil tank should be cleaned to prevent the presence of oxidized iron sheets and other debris. Use lint-free cloth or special paper for cleaning. Do not try to use hemp rope and adhesive as sealing materials. The hydraulic cylinder should be designed according to the requirements, and pay attention to the changes in oil temperature and oil pressure. When unloaded, unscrew the exhaust bolt to exhaust.

2. There should be no looseness in the piping connection.

3. The base of the hydraulic cylinder must have sufficient rigidity, otherwise the cylinder will bend upward in an arched shape when pressurized, causing the piston rod to bend.

4. Before installing the hydraulic cylinder to the system, the parameters on the hydraulic cylinder label should be compared with the parameters at the time of ordering.

5. For the mobile cylinder with fixed foot, the central axis should be concentric with the center line of the load force to avoid causing lateral force, which can easily cause seal wear and piston damage. When installing the hydraulic cylinder of the moving object, keep the cylinder parallel to the moving direction of the moving object on the guide surface, and the parallelism is generally not more than 0.05mm/m.

6. Install the sealing gland screws of the hydraulic cylinder body, and tighten them to ensure that the piston moves flexibly in the full stroke without obstruction and uneven weight. If the screws are tightened too much, it will increase resistance and accelerate wear; too loose will cause oil leakage.

7. For hydraulic cylinders with exhaust valves or exhaust roses, the exhaust valves or exhaust roses must be installed at the highest point to exhaust air.

8. The axial ends of the cylinder cannot be fixed, and one end must be kept floating to prevent the influence of thermal expansion. Due to the effects of factors such as liquid pressure and thermal expansion in the cylinder, there is axial expansion and contraction. If the two ends of the cylinder are fixed, the various parts of the cylinder will be deformed.

9. The clearance between the guide sleeve and the piston rod must meet the requirements.

10. Pay attention to the parallelism and straightness of the cylinder and the guide rail, and the deviation should be within 0.1 mm/full length. If the overall length of the upper busbar of the hydraulic cylinder is out of tolerance, the bottom surface of the bracket of the hydraulic cylinder or the contact surface of the machine tool should be scraped to meet the requirements; if the side busbar is out of tolerance, the hydraulic cylinder and the fixing screws can be loosened, the positioning lock can be removed, and the accuracy of the side busbar can be corrected.

11. When disassembling and assembling the hydraulic cylinder, be careful not to damage the thread at the top of the piston rod, the cylinder mouth thread and the piston rod surface. It is strictly forbidden to hammer the cylinder barrel and piston surface. If there is loss on the cylinder hole and piston surface, it is not allowed to grind with sandpaper, and it must be carefully ground with a fine oil stone.