Reasons for the easy occurrence of pockmarks inside the hydraulic cylinder barrel

2025-09-14 21:48:00

1、 Insufficient lubrication of hydraulic oil

The inside of the hydraulic cylinder requires viscous hydraulic oil lubrication to ensure that the clearance between the cylinder body and piston is controlled within the normal range. However, if the hydraulic oil cannot reach the key parts of the hydraulic cylinder, it will cause excessive friction and wear, leading to pitting problems. Therefore, insufficient lubrication of hydraulic oil is a common cause of pitting in Excavator hydraulic cylinder barrels.

Solution:

1. Replace the hydraulic oil and ensure that it does not expire. Regularly replace it, keep it clean, and actively maintain the hydraulic system.

2. Check all parts of the hydraulic system to ensure that hydraulic oil can reach the inside of the hydraulic cylinder.

2、 The material used for the cylinder body is not suitable

The inner and outer walls of the Hydraulic cylinder barrel need to have a certain degree of hardness and toughness, otherwise it is prone to pitting problems. If the material of the cylinder block is not suitable, it is easy to produce particles during friction and wear, which can lead to pitting problems.

Solution:

1. Choose the appropriate cylinder material and prioritize high-quality steel with better quality.

2. Regularly inspect the inner and outer walls of the hydraulic cylinder barrel to eliminate any unsuitable materials.

3、 Oil circuit blockage

If the oil circuit inside the hydraulic cylinder is blocked, it is also prone to pitting problems. Generally speaking, oil blockage can affect the lubrication and cooling inside the hydraulic cylinder, leading to excessive friction and wear.

Solution:

1. Check if the oil circuit is blocked and clean the dirt inside the pipeline.

2. Regularly replace the filter element in the oil circuit to ensure smooth oil flow.

4、 The cylinder diameter is too small or the stroke is too long

If the cylinder diameter of the hydraulic cylinder is too small or the stroke is too long, it will cause insufficient pressure inside the hydraulic cylinder, which can also easily lead to the occurrence of pitting problems.

Solution:

1. Check whether the cylinder diameter and stroke of the hydraulic cylinder meet the requirements. If they do not meet the requirements, replace them with suitable hydraulic cylinders in a timely manner.

2. Regular maintenance and upkeep of excavators, timely replacement of maintenance parts, to avoid interruptions in construction.

The above is the analysis of the causes and corresponding solutions for the problem of pockmarks on the hydraulic cylinder of excavators. The problem of pockmarks on the hydraulic cylinder of excavators needs to be solved in a timely manner to ensure the normal operation of excavators.