Reasons for repairing hydraulic cylinders
Any mechanism requires repair over time. Hydraulic cylinders are no exception. Common reasons for repairing hydraulic cylinders are:
- Sealing elements are worn out.
- Defects on stem and sleeve surfaces.
At the same time, defects and, accordingly, repair of imported hydraulic cylinders do not fundamentally differ from defects and repair of domestic ones.
Wear of sealing elements and consequences
The most common reason for repairing a hydraulic cylinder is wear of the sealing elements (rings). Failure to make repairs in time (replacement of the seal kit) can lead to serious consequences.
- the simplest is oil loss due to leaks. By the way, the first indicator that the replacement of the seals is required.
- possible oil leakage from the rod to the piston cavity, the consequences of this are unstable operation of the hydraulic cylinder, especially critical for lifting hydraulic cylinders. In the event of leakage due to the difference between the areas of the rod and the piston, the hydraulic cylinder will continue to move.
- if the wiper is damaged, dust and small particles from the ambient air will be sucked into the cavity of the hydraulic cylinder, which can lead to damage to the surfaces of the piston or the housing of the hydraulic cylinder, and, accordingly, to the need to repair or completely replace them.
Reasons for failure of hydraulic cylinder rods
Damage to the stock is also a common defect. Rod bending is most often associated with improper installation, or defects in the manufacture of the hydraulic cylinder. In this case, the bearing unit cannot handle the misalignment of the load. Misalignment of the movement of the rod in the housing of the hydraulic cylinder will lead to rapid wear of the seals. One of the indicators of such a defect is the wear of the seals on only one side. The reason for the bending of the rod can also be an incorrect selection of the hydraulic cylinder for the load. Therefore, with such a defect, it is necessary not only to repair the stem, but also to check the assembly of the entire assembly. The appearance of dents, notches, etc. on the stock. often associated with mechanical stress, since it is not always possible to protect the extended stem.
Stock Repair Methods
When repairing a damaged stem, it is not always necessary to replace it. There are other ways as well. For example: for minor damage, the top layer of chrome can be removed, reapplied and polished to the required size. Small defects are eliminated by powder spraying. Serious mechanical damage can be repaired by surfacing.
Case repair.
Liners (bodies) of hydraulic cylinders are repaired either by boring to the next type of O-ring size, with replacement of the piston
