Causes of hydraulic cylinder leakage:
The wear-resistant ring on the piston is severely worn, the seal fails after long-term use, and the piston seal (mostly U, V, Y-shaped rings, etc.) ages. The hydraulic oil is dirty.
1. The wear-resistant ring on the piston is severely worn, causing friction between the piston and the cylinder liner, and finally straining the cylinder liner, piston and seal.
2. The seal fails after long-term use, and the piston seal (mostly U, V, Y-shaped rings, etc.) ages.
3. The hydraulic oil is dirty, and a large amount of impurities enter the cylinder and wear out the piston seal, usually iron filings or other foreign matter.
4. Damage to the seal between the extended end of the piston rod and the piston rod is mostly caused by the piston cylinder being roughened, or also caused by aging.
5. The seal between the extended end of the piston rod and the cylinder liner is damaged. This is mostly caused by the aging of the seal after long-term use. There are also many cases where the seal is squeezed and damaged by excessive force when the end cap is put on. There are also Many domestic manufacturers of hydraulic cylinders have unreasonable designs. In most cases, the manufacturers do this to save costs.
6. Cracks in the inlet and outlet pipe joints of the oil cylinder will also cause leakage of the hydraulic cylinder.
7. Oil leakage caused by defects on the cylinder block or cylinder end cover.
8. The piston rod is strained and has grooves, pits, etc.
9. The deterioration of lubricating oil causes the temperature of the oil cylinder to rise abnormally, causing the sealing ring to age.
10. Oil leakage caused by frequent use exceeding the pressure range of the cylinder.