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06
Apr
1. What is the eccentric load phenomenon of hydraulic cylinder
Good hydraulic cylinders and cylinders are designed to have a long service life. If installed and maintained properly, they are expected to exceed their expected service life. However, if there are the following problems, such as misalignment of the piston rod end bearing and piston, and excessive side load, it will cause premature damage to the hydraulic cylinder or cylinder.
When the piston rod is forced to leave its designed stroke path, a side load will be generated. There may be misalignment or bending force at any point in the direction of movement, which may scratch the piston rod, rod bearing, piston and inner wall of the cylinder. The manufacturer is responsible for guaranteeing specific tolerance specifications, especially the coaxiality requirements.
Adding a stop tube can solve the above-mentioned eccentric load problem. The stop tube will provide additional bearing support and minimize the deflection of the piston rod. The stop tube is usually used for long strokes (over 1000mm). It increases the supporting area and reduces the deflection of the piston rod.
Selecting a spherical bearing seat can compensate for some side loads. The use of a trunnion-type cylinder can also compensate for some of the influence of unbalanced load.
Second, reduce the eccentric load method of the hydraulic cylinder
1. Check the hydraulic cylinder regularly to prevent excessive wear. The piston rod can be inspected visually. When one side of the rod is found to be shiny or polished, if there is not on the other side, then the reason needs to be found.
2. It is necessary to clarify the working conditions before selecting, so it is more important to understand the use environment of the cylinder and prevent partial load.
3. The installation direction of the cylinder should be installed vertically, gravity acts on the movement direction of the piston rod, and the partial load is small, so generally there may be partial load when the cylinder is installed horizontally.
Good hydraulic cylinders and cylinders are designed to have a long service life. If installed and maintained properly, they are expected to exceed their expected service life. However, if there are the following problems, such as misalignment of the piston rod end bearing and piston, and excessive side load, it will cause premature damage to the hydraulic cylinder or cylinder.
When the piston rod is forced to leave its designed stroke path, a side load will be generated. There may be misalignment or bending force at any point in the direction of movement, which may scratch the piston rod, rod bearing, piston and inner wall of the cylinder. The manufacturer is responsible for guaranteeing specific tolerance specifications, especially the coaxiality requirements.
Adding a stop tube can solve the above-mentioned eccentric load problem. The stop tube will provide additional bearing support and minimize the deflection of the piston rod. The stop tube is usually used for long strokes (over 1000mm). It increases the supporting area and reduces the deflection of the piston rod.
Selecting a spherical bearing seat can compensate for some side loads. The use of a trunnion-type cylinder can also compensate for some of the influence of unbalanced load.
Second, reduce the eccentric load method of the hydraulic cylinder
1. Check the hydraulic cylinder regularly to prevent excessive wear. The piston rod can be inspected visually. When one side of the rod is found to be shiny or polished, if there is not on the other side, then the reason needs to be found.
2. It is necessary to clarify the working conditions before selecting, so it is more important to understand the use environment of the cylinder and prevent partial load.
3. The installation direction of the cylinder should be installed vertically, gravity acts on the movement direction of the piston rod, and the partial load is small, so generally there may be partial load when the cylinder is installed horizontally.
