When installing the reciprocating oil cylinder, the following points should be achieved:

1. Before installation, it is necessary to carefully check the processing quality of shaft ends, holes, etc., chamfer and remove burrs, and then clean them with kerosene or gasoline and dry them.

2. The installation surface and the sliding surface of the piston should maintain a certain degree of parallelism and verticality.

3. The center line of the oil cylinder should be concentric with the action line of the load force to avoid causing axial force, otherwise the seal body or piston is easy to wear.

4. The piston rod end pin hole should be in the same direction as the ear ring pin hole (or trunnion), otherwise the oil cylinder will be subjected to the bending load with the trunnion as the fulcrum, resulting in wear, jamming and other phenomena.

5. In the occasions with large travel and high ambient temperature, the oil cylinder can only be fixed at one end and the other end can be kept in a free telescopic state to prevent the cylinder block from deformation caused by the thermal expansion of the truck oil cylinder.

6. For the oil cylinder with large stroke, support should be set in the middle of the cylinder body and piston rod to prevent downward bending caused by its own weight.

7. Do not install the sealing ring of the oil cylinder too tightly, especially the U-shaped sealing group. If it is too tight, the movement resistance of the piston rod will increase.

The sealing between the inner surface of the hydraulic cylinder and the piston is the main factor causing the internal leakage of the hydraulic cylinder. If there is a longitudinal stretch mark in the cylinder, even if the piston seal is replaced, the fault cannot be eliminated effectively. The inner surface of the cylinder mainly checks whether the dimensional tolerance and geometric tolerance meet the technical requirements, whether there is a longitudinal stretch mark, and measures the depth of the longitudinal stretch mark, so as to take corresponding solutions, When the cylinder barrel has micro deformation and shallow stretch marks, the strong honing process is used to repair the cylinder barrel. The strong honing process can repair the cylinder barrel within 2.5 times of the original tolerance. It hones the parts where the size or shape error is out of tolerance through the strong honing machine, so that the overall size, shape tolerance and roughness of the cylinder barrel meet the technical requirements. The inner surface of the cylinder barrel is seriously worn. When there are deep longitudinal stretch marks, it is mapped according to the actual object.

The relative motion pair between the piston rod and the guide sleeve is the main factor causing external leakage. If the chromium coating on the surface of the piston rod peels off due to wear or produces longitudinal pull marks, it will directly lead to the failure of the seal. Therefore, it is necessary to focus on checking whether the surface roughness and geometric tolerance of the piston rod meet the technical requirements. If the piston rod is bent, it should be calibrated directly to the requirements or mapped according to the actual object, and manufactured by a professional manufacturer.

The company specializes in the production of various truck accessories, mainly including cab lifting oil pump, cab lifting oil cylinder, forklift tilt oil cylinder and steering oil cylinder. At present, the company is dominated by European truck accessories, such as Vlvo Volvo truck, Benz Benz truck, Scania skenia truck, man man truck, Renault Truck, Iveco Iveco truck, DAF Duff truck, etc