Hydraulic cylinder Possible causes of oil leakage are as follows:

1. The seal damage at the extended end of the piston rod and the piston rod is mostly caused by the galling of the piston cylinder, as well as aging.

2. The seal between the piston rod extension end and the cylinder liner is damaged, which is mostly caused by the aging of the seal after long-term use, and many of them are damaged by pressing the seal with too much force when the upper end cover is used, as well as many domestic production Hydraulic cylinder It is caused by the unreasonable design of the manufacturer. In most cases, it is caused by the manufacturer to save costs.

3. Cracking of the inlet and outlet pipe joints of the cylinder will also lead to leakage of the hydraulic cylinder.

4. Oil leakage caused by defects on cylinder block or cylinder end cover.

5. The piston rod is strained, grooved, and pitted.

6. Deterioration of lubricating oil causes abnormal temperature rise of oil cylinder, which promotes aging of sealing ring.

7. The oil leakage is caused by the use of the oil cylinder which often exceeds the pressure range of the oil cylinder.

8. Oil leakage and seepage are mostly caused by deformation, aging, wear and damage of main oil seal.

9. Generally, the main oil seal is prone to deformation and aging under long-term high-temperature, high-pressure and high-speed movement. Even the best oil seal has a chance of deformation under this condition, and the chance of deformation of a good oil seal is small.

10. There is no tension at the sealing lip after the Y-type oil seal is modified, resulting in oil leakage.

Oil cylinder manufacturer During operation, a large amount of dust and impurities will attach to the cylinder rod, and the dust seal can prevent dust and impurities from entering the cylinder and damaging the cylinder and oil seal.

When the dust seal is damaged, the impurities and dust directly enter the cylinder head and directly damage the oil seal and cylinder. When the amount of dust is large, the oil seal will be worn within dozens of hours, and the inner lip will be obviously worn.

The oil cylinder is blackened, the inner wall is strained, and the additive lead in the spray on the inner wall adheres to the oil cylinder surface under long-term high-temperature friction, which indicates that the wear ring needs to be replaced. Wearing ring (cup) is very important in the oil cylinder, for wear resistance and to eliminate the impact of lateral force.

If the cylinder is not replaced after wear, there will be blackening of the cylinder, oil leakage of the main oil seal (because the impact of the lateral force cannot be effectively eliminated, leading to the deformation of the main oil seal), cylinder pulling and other phenomena.

Wear rings made of nylon and glass fiber are personally recommended, because the physical properties of wear rings made of this material are equivalent to those made of bronze, and they have good performance in wear rate, anti pulling cylinder performance, and convenient metal chip capacity.