Is the cylinder hollow or solid?

[SanAngela]

Cylinders can be either hollow or solid. Here is the relevant information: 1. The difference between the two: Hollow and solid cylinders, as commonly understood, refer to whether the piston rod is solid or hollow. Generally, ordinary hydraulic cylinders have a solid piston rod structure. Hollow hydraulic cylinders refer to hydraulic cylinders with a hollow piston rod structure, as shown in the attached diagram. 2. The function of a hollow piston rod: A hollow piston rod allows a lead screw to pass through the center. For example, in the clamping cylinder of a bandsaw machine, the lead screw passes through the center of the piston rod, enabling partial manual operation and partial hydraulic automatic movement. The hollow hole in the piston rod can also be used to conduct oil flow, achieving special oil circuit functions. For larger cylinders with bigger piston rods and longer strokes, a hollow piston rod reduces the weight at the center, preventing deformation of the piston rod.