1. The use of the equipment and the conditions of the workpiece.
2. Structural characteristics, load conditions, required speed, stroke size and action requirements of the working mechanism.
3. The selected working pressure of the hydraulic system.
4. The current status of materials, accessories and processing technology.
5. Relevant national standards and technical specifications, etc.
6. Try to make the piston rod bear a very large load in the multi-pull state, and have good longitudinal stability in the multi-pressure state.
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