Piston rods can be used in hydraulic start-ups when used. The processing requirements of the product are relatively high, so the quality of the hydraulic cylinder is mostly the quality of the piston rod. The piston rod is a connecting member that supports the work of the piston. Most of the components are used in the cylinder, cylinder (compressed air) motion executing parts, and are a moving part with frequent frequency and high technical requirements. The hydraulic piston rod cylinder, the piston rod (cylinder rod), the piston and the end cover are composed of several parts. When the hollow piston rods have the same material and the cross-sectional area is equal, the hollow piston rod has stronger torsion resistance and can withstand large external moments. 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 hollow piston rod refers to a hollow piston rod having an annular cross section. The 45# piston rod connects the piston and the crosshead to transmit the force acting on the piston and drive the piston to move. The quality of the piston rod directly affects the life and reliability of the entire product. The processing requirements of the piston rod are high, and the surface roughness of the veneer repairing machine is required to be Ra 0.4 to 0.8 um, which is strict in terms of coaxiality and wear resistance.   Although the piston rod is considered from the angle of the design idea (consider) does not want to bear the radial force, it will be directly limited by the actual structure when it is used, and the piston rod of the hydraulic cylinder is inevitable. The ground is subjected to a considerable portion of its radial external force. For this reason, the length of the hydraulic cylinder piston must be appropriate, generally taking 0.7 to 1.0 times the outer diameter (outer diameter) of the piston rod. The piston rod increases its guiding action and increases the bearing surface area, thereby achieving reduce wear (a basic type of component failure) and increasing the length of time used by the hydraulic cylinder. The quality of the hydraulic cylinder depends largely on the quality of the hydraulic cylinder. For the quality of the piston rod, therefore, the machining of the piston should require sufficient accuracy (accuracy) of the geometrical tolerance. Generally speaking, the outer diameter of the piston, 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 outer diameter of the piston rod and the sealing groove (gōucá o) should be 0.02 mm. Within. Generally, the vertical tolerance of the end face of the hydraulic cylinder to the axis of the hydraulic cylinder is less than 0.04 mm/100 mm.

• prev：What are the requirements for the quality and endurance of t
• next：Impact and repair method of piston rod strain