Functions of the main components of a hydraulic cylinder:
(1) Cylinder body: The cylinder body is welded from the cylinder barrel, flange, exhaust valve seat, and oil port. It is the main body of the hydraulic cylinder. The surface roughness Ra value of the inner bore is generally required to reach 0.16~0.32μm so that the piston and its seals and supports can slide within it and ensure the sealing effect, reducing wear. The cylinder body must withstand a large liquid pressure, so it is required to have sufficient strength and rigidity. The flange is welded to its end to connect the end cap. The oil port and exhaust valve seat are welded to both ends of the outer circle of the cylinder body and communicate with the inner bore to allow the pressure oil to enter and exit and the air to be discharged. (2) Piston: The piston is the main component of the hydraulic cylinder that converts hydraulic energy into mechanical energy. The size of the effective area of its two end faces determines the magnitude of the thrust and pull. There are seali...