What are the most common problems with piston rod？

For hydraulic cylinders, the piston rod is of great significance. It is responsible for transmitting motion and force, converting hydraulic energy into mechanical energy, achieving linear reciprocating motion, and thereby transmitting the force and motion acting on the piston. Even a minor issue on the piston rod can affect the operation of the hydraulic cylinder. Therefore, it is very necessary to understand some common problems of the hydraulic piston rod.

1. Inappropriate size

The most obvious problem is the mismatch in the size of the piston rod, which can be manifested in two ways: one is that the piston rod is too large, and the other is that the size of the piston rod is too small. When the hydraulic cylinder operates in a stretched state, if the size of the piston rod is too large, it will reduce the contraction force, affecting the flow and pressure of the hydraulic system and resulting in a decrease in the efficiency of the hydraulic cylinder. Piston rod columns that are too small in size have relatively low strength, especially in long-stroke applications. Slender rods will bend or break when pushing loads exceeding their rated values, thereby affecting the normal operation of the hydraulic cylinder.

2.Rod scratch

The piston rod of the hydraulic cylinder is prone to being knocked by external objects during use, which can cause damage to the piston rod of the hydraulic cylinder.

Scratches on the piston rod rarely affect the strength of the hydraulic cylinder. However, dents and scratches on the piston rod can rub against the seals, increasing the internal leakage of the hydraulic cylinder and reducing its working efficiency. Working efficiency of the hydraulic oil cylinder.

3.Rod fracture

The piston rod may break due to manufacturing defects, improper installation or material fatigue, etc. If the piston rod breaks, it will directly affect the operation of the hydraulic cylinder and may even cause a safety accident.

4.Corrosion of rod

If your hydraulic cylinder operates in a humid environment or around hazardous chemicals, the harsh working conditions may cause the piston rod to be eroded by corrosive gases or liquids, leading to surface corrosion. Corrosion or rust may weaken the rod end over time, affecting its strength and durability.

These problems with the piston rod not only affect the performance and service life of the hydraulic cylinder, but may also lead to the failure of the entire mechanical system and affect production. Therefore, in order not to affect your production process and production safety, it is very important to regularly inspect the piston rod of the hydraulic cylinder. TOLENG is a professional manufacturer of hydraulic cylinders. We will help you identify and solve problems in a timely manner. If you have any questions, please contact us at sales01@phtl.cn