Of course, from the perspective of design thinking (consider) not only willing to bear radial force, piston (piston) rod but subject to the actual structure limit (limit), hydraulic (hydraulic) cylinder rod can not Avoid the need to withstand the radial external force of the proportional department. The hollow piston rod refers to a hollow piston rod having an annular cross section. The hydraulic piston rod improves the surface corrosion resistance and can delay the generation or expansion of fatigue cracks, thereby improving the fatigue strength of the cylinder rod. The piston rod of the cylinder has a piston rod at one end, and the air supply from the side of the piston generates air pressure, and the air pressure pushes the piston to generate a thrust and returns by the spring or the self weight. The cylinder piston rod wear ring can improve the guiding of the cylinder, reduce the wear of the piston seal and reduce the frictional resistance. The hydraulic piston rod cylinder, the piston rod (cylinder rod), the piston and the end cover are composed of several parts. The piston rod can be applied to hydro-pneumatics, and its processing requirements are relatively high, so the quality of the hydraulic cylinder is mostly affected by the quality of the piston rod. The quality of its processing directly affects the life and reliability of the entire product. Generally speaking, the outer diameter of the piston (outer diameter), the roundness of the inner hole, and the deviation of the cylindricity cannot be greater than half of the dimensional tolerance; the outer diameter of the piston rod is opposite to the inner hole and the sealing groove (gōucá o)  The quality of the hydraulic cylinder depends to a large extent on the quality of the piston rod, so the machining of the piston should require a dimensional accuracy tolerance of sufficient accuracy (accuracy). For this reason, the length of the hydraulic cylinder piston must be appropriate, generally taking 0.7 to 1.0 times the outer diameter of the piston rod. The piston rod has high processing requirements, and the surface roughness is required to be Ra 0.4 to 0.8 um. The coaxiality and wear resistance are strictly required. Taking a hydraulic cylinder as an example, it consists of a cylinder, a piston rod (cylinder rod), a piston, and an end cover.       Piston rod is a connecting component that supports the work of the piston. Most of the components are used in the cylinder, cylinder (compressed air) motion execution components, and are a moving component with frequent frequency and high technical requirements. In order to increase its guiding effect and increase the bearing surface area, it can achieve the purpose of reducing wear (a basic type of component failure) and improving the length of time used by the hydraulic cylinder.

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