Steps for replacing the sealing ring of the cylinder in a four-column hydraulic press

Steps for replacing the sealing ring of the cylinder in a four-column hydraulic press

The so-called hydraulic cylinder sealing ring is installed on the hydraulic pump and hydraulic motor shaft, which has a certain protective effect on the working medium and prevents the reverse intrusion of dust. Four-column hydraulic presses have cylinder seals. Although a small sealing ring is not very conspicuous to everyone, it will directly affect one of the keys to the normal operation of the hydraulic system. The quality of the cylinder seal will also affect the service life of the four-column hydraulic press. Many four-column hydraulic oil cylinder seals need to be replaced after a period of use to ensure the normal operation of the four-column hydraulic press. Then Shanghai WORLD Press Machine will explain the steps of how to replace the four-column hydraulic press seal:

1. First, disassemble the upper die and the cylinder rod of the hydraulic cylinder to separate the upper die and the cylinder rod of the hydraulic cylinder. (The upper mold needs to be padded)

2. Do not change the seal of the hydraulic cylinder online (because it is too dirty and not easy to operate), remove the hydraulic cylinder as a whole and place it in a clean and dust-free place. (Be sure to release the pressure before dismantling, and if the hydraulic cylinder rod is placed in position, there should be corresponding measures to prevent the cylinder rod from falling after the pressure is released).

3. Remove the rear end cover of the hydraulic cylinder, pull out the piston and piston rod, and remove the front end cover. At this time, the seal of the hydraulic cylinder can basically be presented in front of you (some hydraulic cylinders only have the front end cover, and the reasons are similar) .

4. There are many kinds of sealing rings, and there are basically several commonly used ones: Y-rings, Yx-rings, V-rings, Gree seals, Sterling seals, and some combined seals. There are also guide rings and wipers that are used in conjunction with the seal. It depends on which seal you are replacing. If you are experienced enough, you can choose the same specification as the original seal according to the size of the seal groove of the hydraulic cylinder (there are many manufacturers of seals in the market, each manufacturer The models are different, but the principle is the same). If you are not too familiar with it, find a professional seal manufacturer to do it and provide guidance (some seals need to be hot-loaded), and it is very important to use a pressing equipment to perform a pressure test after the installation!

5. Install in the order in which the hydraulic cylinders are removed. There are many details, so pay more attention.

Through the above five steps, we can easily know that the replacement of the sealing ring of the four-column hydraulic press is actually very simple. The use of the four-column hydraulic press should not only master its operating specifications, but also pay attention to the repair and maintenance of the machine, so that the four-column hydraulic press can achieve a better working state, improve production efficiency and prolong the service life of the machine. This article comes from the hydraulic manufacturer WORLD Press Machine official website www.pressmachine-world.com, please indicate the source for reprinting!

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